Decibel X PRO Downloads & RevenueDecibel X PRO: dBA Noise Meter · App Store & Google Play
Decibel X PRO: dBA Noise Meter by SkyPaw Co., Limited is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
Decibel X PRO: dBA Noise Meter update history & changes
Last change · 26 events since 10 Jul 2017Full timeline ↓⭐iOSPassed 1K ratings⭐iOSPassed 1K ratings🆕AndroidFirst spotted by AppInsider📦iOSUpdated to version 9.9.9📈iOSCharting in a new country📈iOSEntered the top 10✏️iOSNew iPad screenshots✏️iOSNew screenshots📦iOSUpdated to version 9.9.8🆕iOSFirst spotted by AppInsider📦AndroidVersion 9.3.9🆕AndroidReleased on Google Play🆕iOSReleased on the App Store
Full timeline · 26 events
- 🆕Decibel X PRO: dBA Noise Meter first spotted by AppInsiderAndroidUnited States (found via search)
- 📦Decibel X PRO: dBA Noise Meter updated to version 9.9.9iOSThanks for using Decibel X! Here's what's new for the version 9.9.9:
∿ [Improvements] - iPhone Duo and iPad: every screen except the Camera now rotates to all four orientations
∿ [Fixes] - Fix the Camera preview is rotated 90 degrees on iPhone Duo
∿ [Fixes] - Several other minor tweaks & bug fixes
What to expect in upcoming versions:
∿ Support external or bluetooth mics
∿ Hearing test… more - 📈Decibel X PRO: dBA Noise Meter charting in a new countryiOSChina
- 📈Decibel X PRO: dBA Noise Meter entered the top 10iOSTop Paid · Utilities · IT
- ✏️Decibel X PRO: dBA Noise Meter: new iPad screenshotsiOS· ID
- ✏️Decibel X PRO: dBA Noise Meter: new screenshotsiOS9 screenshots (was 9) · ID
- ✏️Decibel X PRO: dBA Noise Meter: new iPad screenshotsiOS· IN
- ✏️Decibel X PRO: dBA Noise Meter: new screenshotsiOS9 screenshots (was 9) · IN
- 📦Decibel X PRO: dBA Noise Meter updated to version 9.9.8iOSThanks for using Decibel X! Here's what's new for the version 9.9.8:
∿ [New] - Full support for the iPhone Duo
Previously in version 9.9.7:
∿ [Fixes] - Camera: the dB readings and the graphs on the overlay now update smoothly along with the live video, instead of looking frozen
Previously in version 9.9.6:
∿ [New] - Siri & Shortcuts: run the app hands-free - start or stop measuring, save a recording, run the dosimeter, take a photo or record a video, create a PDF report, share a recording, change the weighting, set a noise alert and more
∿ [New] - Ask Siri what a term means ("What does TWA mean in Decibel X?") without opening the app
∿ [New] - Search your recordings in the Data tab - by name, note, location or date - or just ask Siri to find them
∿ [New] - Filter recordings by date: Today, last 7 or 30 days, or a custom range
∿ [New] - Swipe a recording to delete it, or drag one straight into Mail, Files or Notes
∿ [New] - Photos, videos and recordings now log the full street address instead of only the city
∿ [New] - The loud noise alert now shows its threshold value right on the meter
∿ [Improvements] - PDF reports are built faster and reused when nothing has changed
∿ [Improvements] - Reports for the running session now include the audio recording
∿ [Improvements] - "Running in background" is now off by default on new installs
∿ [Improvements] - Refreshed look on iOS 26 and iOS 27, and support for the newest devices
∿ [Fixes] - Fix crashes when starting a measurement with Siri, and when leaving the app
∿ [Fixes] - Fix recordings saved through Siri or Shortcuts coming out without audio
∿ [Fixes] - Fix "Stop measuring" telling you it had already stopped while it was still running
∿ [Fixes] - Fix the meter showing a wrong duration, and Reset not clearing it
∿ [Fixes] - Fix deleting several recordings at once leaving their files behind
∿ [Fixes] - Several other minor tweaks & bug fixes
What to expect in upcoming versions:
∿ Support external or bluetooth mics
∿ Hearing test… more - 📈Decibel X PRO: dBA Noise Meter charting in a new country in 2 chartsiOSBrazil · Italy
- 📈Decibel X PRO: dBA Noise Meter charting in a new country in 2 chartsiOSIndonesia · South Korea
- 🆕Decibel X PRO: dBA Noise Meter first spotted by AppInsideriOS#46 in Top Paid · Utilities · India
- 📦Decibel X PRO: dBA Noise Meter version 9.3.9Android∿ NEW: Calibration guide - check your microphone, see whether a quiet room reads sensibly, and learn how accurate phone measurements really are. On the Calibration screen.
∿ NEW: Search and filter recordings in the Data tab.
∿ IMPORTANT: Levels have changed. They now come from your microphone's rated sensitivity and may read higher than before. Re-check your calibration if you need exact figures.
∿ Faster startup, crash fixes and minor improvements.… more - 📦Decibel X PRO: dBA Noise Meter version 9.9.7iOSThanks for using Decibel X! Here's what's new for the version 9.9.7:
∿ [Fixes] - Camera: the dB readings and the graphs on the overlay now update smoothly along with the live video, instead of looking frozen
Previously in version 9.9.6:
∿ [New] - Siri & Shortcuts: run the app hands-free - start or stop measuring, save a recording, run the dosimeter, take a photo or record a video, create a PDF report, share a recording, change the weighting, set a noise alert and more
∿ [New] - Ask Siri what a term means ("What does TWA mean in Decibel X?") without opening the app
∿ [New] - Search your recordings in the Data tab - by name, note, location or date - or just ask Siri to find them
∿ [New] - Filter recordings by date: Today, last 7 or 30 days, or a custom range
∿ [New] - Swipe a recording to delete it, or drag one straight into Mail, Files or Notes
∿ [New] - Photos, videos and recordings now log the full street address instead of only the city
∿ [New] - The loud noise alert now shows its threshold value right on the meter
∿ [Improvements] - PDF reports are built faster and reused when nothing has changed
∿ [Improvements] - Reports for the running session now include the audio recording
∿ [Improvements] - "Running in background" is now off by default on new installs
∿ [Improvements] - Refreshed look on iOS 26 and iOS 27, and support for the newest devices
∿ [Fixes] - Fix crashes when starting a measurement with Siri, and when leaving the app
∿ [Fixes] - Fix recordings saved through Siri or Shortcuts coming out without audio
∿ [Fixes] - Fix "Stop measuring" telling you it had already stopped while it was still running
∿ [Fixes] - Fix the meter showing a wrong duration, and Reset not clearing it
∿ [Fixes] - Fix deleting several recordings at once leaving their files behind
∿ [Fixes] - Several other minor tweaks & bug fixes
What to expect in upcoming versions:
∿ Support external or bluetooth mics
∿ Hearing test… more - 🆕Decibel X PRO: dBA Noise Meter released on Google PlayAndroid
- 🆕Decibel X PRO: dBA Noise Meter released on the App StoreiOS
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.3 ★
843 ratings, both stores
Measured
Best rank now
#47
App Store · 
Utilities Paid
Utilities PaidMeasured
App Store
App details
App ID
1257651611
Publisher
SkyPaw Co., Limited
Publisher country
Hong Kong
On the store since
Jul 2017
9 years on the store
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad · Watch
Universal purchase
Content rating
4+
Languages
12
NL EN FR DE IT JA KO PT ZH ES ZH VI
Size
26 MB
Also listed in
Education
Google Play
App details
App ID
com.skypaw.decibel10pro
Publisher
SkyPaw Co., Limited
Publisher country
Hong Kong
Content rating
Everyone
Decibel X PRO: dBA Noise Meter downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | – | 100k+ |
| Google Play | – | 10k+ Measured |
| Total | – | 100k+ Confidence |
How this is calculated
App Store: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Where Decibel X PRO: dBA Noise Meter's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Decibel X PRO: dBA Noise Meter makes money: subscriptions, one-off purchases and ads.
Ads · 11 ad networks
Ads
/mo
of revenue
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | #47 Utilities Paid | 4 of 30 countries | – | – |
| Google Play | – | 0 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.7★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
51/100
faster than 52% of Utilities apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.5 ★ | 62 |
| Google Play | 4.3 ★ | 781 98 written reviews |
| Both stores | 4.3 ★ weighted by ratings | 843 |
What users say about Decibel X PRO: dBA Noise Meter
From the 50 most recent App Store reviews in the US.
Mixed but leaning positive (74% of recent reviews give 4–5 stars). People like it for its features and content, and being useful. The main complaints are about price and subscriptions, and customer support.
What people like
- Features & content: “It is a great learning tool”
- Useful: “This app has been really useful”
- Ease of use: “Simple function - amazing app!”
- Fun: “This app is very quick and easy to use and enjoy it very much”
Common complaints
- Price & subscription: “I want them back otherwise refund my money”
- Customer support: “Have contacted creator of the App 3 times, and no response”
About Decibel X PRO: dBA Noise Meter
"Decibel X" is the leading noise meter app on the market, which has highly reliable, pre-calibrated measurements and supports dBA, dBC. Our success lies at the intersection of expertise in sound communication, listening to our dear users, and our vision to build a great product. Our app turns your iOS device into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you. While this pro tool mainly aids audio experts or workers prone to noise pollution, it can also add more fun and protect your hearing. Have you ever wondered how quiet your surroundings are or how loud is a rock concert or football match? "Decibel X" will help you answer all of those.
WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS:
- Trusted accuracy: the app is tested and pre calibrated for all Apple devices. The precision is matching with real SPL devices
- Apple Watch support: see noise level right from your wrist
- Health App integration: export noise levels directly into Health app.
- Frequency weighting filters: ITU-R 468, A, B, C, Z
- Powerful, smart history data management:
+ Recording data can be saved into a list of history records for future access and analysis
+ Each record can be exported as hi-res PNG graph or CSV text via sharing services
+ iCloud support which synchronize all history records across your Apple devices
+ Fullscreen mode to give overview the whole history of an record
- Dosimeter with NIOSH, OSHA standards
- FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
- WAVE graph with 2 display modes: Rolling & Buffer
- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, Messages, etc.).
- Support both Portrait and Landscape layouts
- Beautiful, intuitive and carefully crafted UI design
- Optimized for iOS 11
OTHER GREAT FEATURES:
- Standard time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds)
- Trimming calibration from -15 dB to 15 dB
- Standard measurement range from 30 dBA up to 130 dBA
- HISTO graph for plotted history of the recorded values
- Real time scale level chart
- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts
- Quick reference text to help you compare with real-life examples
- "Keep Device Stay Awake" option for long duration recording
- Reset and clear current recording at any time
- Tap on Max value to reset at any time
- Pause/Resume the tool at any time
NOTES:
- Please do not expect a quiet room reading will be 0 dBA. The range 30-130 dBA is the standard usable range and an average quiet room will be about 30 dBA.
- Although all devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. You will need a real external device or calibrated sound meter as a reference,
WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS:
- Trusted accuracy: the app is tested and pre calibrated for all Apple devices. The precision is matching with real SPL devices
- Apple Watch support: see noise level right from your wrist
- Health App integration: export noise levels directly into Health app.
- Frequency weighting filters: ITU-R 468, A, B, C, Z
- Powerful, smart history data management:
+ Recording data can be saved into a list of history records for future access and analysis
+ Each record can be exported as hi-res PNG graph or CSV text via sharing services
+ iCloud support which synchronize all history records across your Apple devices
+ Fullscreen mode to give overview the whole history of an record
- Dosimeter with NIOSH, OSHA standards
- FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
- WAVE graph with 2 display modes: Rolling & Buffer
- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, Messages, etc.).
- Support both Portrait and Landscape layouts
- Beautiful, intuitive and carefully crafted UI design
- Optimized for iOS 11
OTHER GREAT FEATURES:
- Standard time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds)
- Trimming calibration from -15 dB to 15 dB
- Standard measurement range from 30 dBA up to 130 dBA
- HISTO graph for plotted history of the recorded values
- Real time scale level chart
- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts
- Quick reference text to help you compare with real-life examples
- "Keep Device Stay Awake" option for long duration recording
- Reset and clear current recording at any time
- Tap on Max value to reset at any time
- Pause/Resume the tool at any time
NOTES:
- Please do not expect a quiet room reading will be 0 dBA. The range 30-130 dBA is the standard usable range and an average quiet room will be about 30 dBA.
- Although all devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. You will need a real external device or calibrated sound meter as a reference,
Decibel X PRO: dBA Noise Meter App Store
Decibel X PRO: dBA Noise Meter is #47 in Utilities Paid in France and charting in 4 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperSkyPaw Co., Limited
CategoryUtilities
Price6,900.00 INR
Released
Rating★ 4.5 (62)
Version9.9.9
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)100k+ worldwide
Rating
4.5 ★
62 ratings
Measured
Best rank now
#47
Utilities PaidMeasured
Decibel X PRO: dBA Noise Meter on the App Store
App details
App ID
1257651611
Publisher
SkyPaw Co., Limited
Publisher country
Hong Kong
On the store since
Jul 2017
9 years on the store
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad · Watch
Universal purchase
Content rating
4+
Languages
12
NL EN FR DE IT JA KO PT ZH ES ZH VI
Size
26 MB
Also listed in
Education
Decibel X PRO: dBA Noise Meter downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Decibel X PRO: dBA Noise Meter's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Decibel X PRO: dBA Noise Meter makes money: subscriptions, one-off purchases and ads.
Ads · 11 ad networks
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| France | UtilitiesPaid | #47 |
 South Korea | UtilitiesPaid | #158 |
 Brazil | UtilitiesPaid | #179 |
| India | UtilitiesPaid | #184 |
Apps near Decibel X PRO: dBA Noise Meter on the chart
Utilities Paid, around #47.
Ratings
App Store, worldwide.
Rating
4.5 ★
62 ratings
Measured
Ratings
62
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.7★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
51/100
faster than 52% of Utilities apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Decibel X PRO: dBA Noise Meter
From the 50 most recent App Store reviews in the US.
Mixed but leaning positive (74% of recent reviews give 4–5 stars). People like it for its features and content, and being useful. The main complaints are about price and subscriptions, and customer support.
What people like
- Features & content: “It is a great learning tool”
- Useful: “This app has been really useful”
- Ease of use: “Simple function - amazing app!”
- Fun: “This app is very quick and easy to use and enjoy it very much”
Common complaints
- Price & subscription: “I want them back otherwise refund my money”
- Customer support: “Have contacted creator of the App 3 times, and no response”
About Decibel X PRO: dBA Noise Meter
"Decibel X" is the leading noise meter app on the market, which has highly reliable, pre-calibrated measurements and supports dBA, dBC. Our success lies at the intersection of expertise in sound communication, listening to our dear users, and our vision to build a great product. Our app turns your iOS device into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you. While this pro tool mainly aids audio experts or workers prone to noise pollution, it can also add more fun and protect your hearing. Have you ever wondered how quiet your surroundings are or how loud is a rock concert or football match? "Decibel X" will help you answer all of those.
WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS:
- Trusted accuracy: the app is tested and pre calibrated for all Apple devices. The precision is matching with real SPL devices
- Apple Watch support: see noise level right from your wrist
- Health App integration: export noise levels directly into Health app.
- Frequency weighting filters: ITU-R 468, A, B, C, Z
- Powerful, smart history data management:
+ Recording data can be saved into a list of history records for future access and analysis
+ Each record can be exported as hi-res PNG graph or CSV text via sharing services
+ iCloud support which synchronize all history records across your Apple devices
+ Fullscreen mode to give overview the whole history of an record
- Dosimeter with NIOSH, OSHA standards
- FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
- WAVE graph with 2 display modes: Rolling & Buffer
- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, Messages, etc.).
- Support both Portrait and Landscape layouts
- Beautiful, intuitive and carefully crafted UI design
- Optimized for iOS 11
OTHER GREAT FEATURES:
- Standard time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds)
- Trimming calibration from -15 dB to 15 dB
- Standard measurement range from 30 dBA up to 130 dBA
- HISTO graph for plotted history of the recorded values
- Real time scale level chart
- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts
- Quick reference text to help you compare with real-life examples
- "Keep Device Stay Awake" option for long duration recording
- Reset and clear current recording at any time
- Tap on Max value to reset at any time
- Pause/Resume the tool at any time
NOTES:
- Please do not expect a quiet room reading will be 0 dBA. The range 30-130 dBA is the standard usable range and an average quiet room will be about 30 dBA.
- Although all devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. You will need a real external device or calibrated sound meter as a reference,
WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS:
- Trusted accuracy: the app is tested and pre calibrated for all Apple devices. The precision is matching with real SPL devices
- Apple Watch support: see noise level right from your wrist
- Health App integration: export noise levels directly into Health app.
- Frequency weighting filters: ITU-R 468, A, B, C, Z
- Powerful, smart history data management:
+ Recording data can be saved into a list of history records for future access and analysis
+ Each record can be exported as hi-res PNG graph or CSV text via sharing services
+ iCloud support which synchronize all history records across your Apple devices
+ Fullscreen mode to give overview the whole history of an record
- Dosimeter with NIOSH, OSHA standards
- FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
- WAVE graph with 2 display modes: Rolling & Buffer
- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, Messages, etc.).
- Support both Portrait and Landscape layouts
- Beautiful, intuitive and carefully crafted UI design
- Optimized for iOS 11
OTHER GREAT FEATURES:
- Standard time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds)
- Trimming calibration from -15 dB to 15 dB
- Standard measurement range from 30 dBA up to 130 dBA
- HISTO graph for plotted history of the recorded values
- Real time scale level chart
- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts
- Quick reference text to help you compare with real-life examples
- "Keep Device Stay Awake" option for long duration recording
- Reset and clear current recording at any time
- Tap on Max value to reset at any time
- Pause/Resume the tool at any time
NOTES:
- Please do not expect a quiet room reading will be 0 dBA. The range 30-130 dBA is the standard usable range and an average quiet room will be about 30 dBA.
- Although all devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. You will need a real external device or calibrated sound meter as a reference,
Latest updates
9.9.9
Thanks for using Decibel X! Here's what's new for the version 9.9.9:
∿ [Improvements] - iPhone Duo and iPad: every screen except the Camera now rotates to all four orientations
∿ [Fixes] - Fix the Camera preview is rotated 90 degrees on iPhone Duo
∿ [Fixes] - Several other minor tweaks & bug fixes
What to expect in upcoming versions:
∿ Support external or bluetooth mics
∿ Hearing test
9.9.8
Thanks for using Decibel X! Here's what's new for the version 9.9.8:
∿ [New] - Full support for the iPhone Duo
Previously in version 9.9.7:
∿ [Fixes] - Camera: the dB readings and the graphs on the overlay now update smoothly along with the live video, instead of looking frozen
Previously in version 9.9.6:
∿ [New] - Siri & Shortcuts: run the app hands-free - start or stop measuring, save a recording, run the dosimeter, take a photo or record a video, create a PDF report, share a recording, change the weighting, set a noise alert and more
∿ [New] - Ask Siri what a term means ("What does TWA mean in Decibel X?") without opening the app
∿ [New] - Search your recordings in the Data tab - by name, note, location or date - or just ask Siri to find them
∿ [New] - Filter recordings by date: Today, last 7 or 30 days, or a custom range
∿ [New] - Swipe a recording to delete it, or drag one straight into Mail, Files or Notes
∿ [New] - Photos, videos and recordings now log the full street address instead of only the city
∿ [New] - The loud noise alert now shows its threshold value right on the meter
∿ [Improvements] - PDF reports are built faster and reused when nothing has changed
∿ [Improvements] - Reports for the running session now include the audio recording
∿ [Improvements] - "Running in background" is now off by default on new installs
∿ [Improvements] - Refreshed look on iOS 26 and iOS 27, and support for the newest devices
∿ [Fixes] - Fix crashes when starting a measurement with Siri, and when leaving the app
∿ [Fixes] - Fix recordings saved through Siri or Shortcuts coming out without audio
∿ [Fixes] - Fix "Stop measuring" telling you it had already stopped while it was still running
∿ [Fixes] - Fix the meter showing a wrong duration, and Reset not clearing it
∿ [Fixes] - Fix deleting several recordings at once leaving their files behind
∿ [Fixes] - Several other minor tweaks & bug fixes
What to expect in upcoming versions:
∿ Support external or bluetooth mics
∿ Hearing test
9.9.7
Thanks for using Decibel X! Here's what's new for the version 9.9.7:
∿ [Fixes] - Camera: the dB readings and the graphs on the overlay now update smoothly along with the live video, instead of looking frozen
Previously in version 9.9.6:
∿ [New] - Siri & Shortcuts: run the app hands-free - start or stop measuring, save a recording, run the dosimeter, take a photo or record a video, create a PDF report, share a recording, change the weighting, set a noise alert and more
∿ [New] - Ask Siri what a term means ("What does TWA mean in Decibel X?") without opening the app
∿ [New] - Search your recordings in the Data tab - by name, note, location or date - or just ask Siri to find them
∿ [New] - Filter recordings by date: Today, last 7 or 30 days, or a custom range
∿ [New] - Swipe a recording to delete it, or drag one straight into Mail, Files or Notes
∿ [New] - Photos, videos and recordings now log the full street address instead of only the city
∿ [New] - The loud noise alert now shows its threshold value right on the meter
∿ [Improvements] - PDF reports are built faster and reused when nothing has changed
∿ [Improvements] - Reports for the running session now include the audio recording
∿ [Improvements] - "Running in background" is now off by default on new installs
∿ [Improvements] - Refreshed look on iOS 26 and iOS 27, and support for the newest devices
∿ [Fixes] - Fix crashes when starting a measurement with Siri, and when leaving the app
∿ [Fixes] - Fix recordings saved through Siri or Shortcuts coming out without audio
∿ [Fixes] - Fix "Stop measuring" telling you it had already stopped while it was still running
∿ [Fixes] - Fix the meter showing a wrong duration, and Reset not clearing it
∿ [Fixes] - Fix deleting several recordings at once leaving their files behind
∿ [Fixes] - Several other minor tweaks & bug fixes
What to expect in upcoming versions:
∿ Support external or bluetooth mics
∿ Hearing test
Store changes
What Decibel X PRO: dBA Noise Meter changed on its store page: name, icon, screenshots, price, size, languages, requirements.
New iPad screenshots 
New screenshots
9 screenshots (was 9)
New iPad screenshots
More from SkyPaw Co., Limited
Decibel X PRO: Sound Meter Android
Not in a tracked Google Play top chart right now.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperSkyPaw Co., Limited
CategoryTools
Price47.99 USD
Released
Installs10k+
Rating★ 4.3 (781)
Updated
Content ratingEveryone
Rating
4.3 ★
781 ratings
Measured
Decibel X PRO: Sound Meter on Google Play
App details
App ID
com.skypaw.decibel10pro
Publisher
SkyPaw Co., Limited
Publisher country
Hong Kong
Content rating
Everyone
Decibel X PRO: Sound Meter downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Where Decibel X PRO: Sound Meter's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Decibel X PRO: Sound Meter makes money: subscriptions, one-off purchases and ads.
Ads · 11 ad networks
Ads
/mo
of revenue
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Not in a Google Play top chart right now. | ||
Ratings
Google Play, worldwide.
Rating
4.3 ★
781 ratings
Measured
Ratings
781
Measured
Written reviews
98
Measured
About Decibel X PRO: Sound Meter
"Decibel X PRO" is one of very few sound meter apps on the market that has highly reliable, pre-calibrated measurements and supports frequency weightings: ITU-R 468, A and C. It turns your phone device into a professional noise meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and beautiful tool will not only be an essential gadget for many uses but also bring you a lot of fun. Have you wondered how quiet is your room or how loud is a rock concert or sport event? "Decibel X PRO" will help you answer all of those.
WHAT MAKES "DECIBEL X PRO" SPECIAL:
- Trusted accuracy: the app is carefully tested and calibrated for most devices. The precision is matching with real SPL devices
- Frequency weighting filters: ITU-R 468, A, B, C, Z
- Spectrum analyzer: FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
- Powerful, smart history data management:
+ Recording data can be saved into a list of history records for future access and analysis
+ Each record can be exported as hi-res PNG graph or CSV text via sharing services
+ Fullscreen mode to give overview the whole history of an record
- Dosimeter: NIOSH, OSHA standards
- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, etc.).
- Support both Portrait and Landscape layouts
- Beautiful, intuitive and carefully crafted UI design
OTHER FEATURES:
- Standard time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds)
- Trimming calibration from -15 dB to 15 dB
- Standard measurement range from 30 dBA up to 130 dBA
- HISTO graph for plotted history of the recorded values
- WAVE graph with 2 display modes: Rolling & Buffer
- Real time scale level chart
- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts
- Quick reference text to help you compare with real-life examples
- "Keep Device Stay Awake" option for long duration recording
- Reset and clear current recording at any time
- Pause/Resume at any time
NOTES:
- Please do not expect a quiet room reading will be 0 dBA. The range 30 dBA - 130 dBA is the standard usable range and an average quiet room will be about 30 dBA.
- Although most devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. To calibrate, you will need a real external device or calibrated sound meter as a reference, then adjust the trimming value until the reading matches with the reference.
If you like it or have suggestions, please support us by rating and giving us comments and feedback.
WHAT MAKES "DECIBEL X PRO" SPECIAL:
- Trusted accuracy: the app is carefully tested and calibrated for most devices. The precision is matching with real SPL devices
- Frequency weighting filters: ITU-R 468, A, B, C, Z
- Spectrum analyzer: FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
- Powerful, smart history data management:
+ Recording data can be saved into a list of history records for future access and analysis
+ Each record can be exported as hi-res PNG graph or CSV text via sharing services
+ Fullscreen mode to give overview the whole history of an record
- Dosimeter: NIOSH, OSHA standards
- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, etc.).
- Support both Portrait and Landscape layouts
- Beautiful, intuitive and carefully crafted UI design
OTHER FEATURES:
- Standard time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds)
- Trimming calibration from -15 dB to 15 dB
- Standard measurement range from 30 dBA up to 130 dBA
- HISTO graph for plotted history of the recorded values
- WAVE graph with 2 display modes: Rolling & Buffer
- Real time scale level chart
- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts
- Quick reference text to help you compare with real-life examples
- "Keep Device Stay Awake" option for long duration recording
- Reset and clear current recording at any time
- Pause/Resume at any time
NOTES:
- Please do not expect a quiet room reading will be 0 dBA. The range 30 dBA - 130 dBA is the standard usable range and an average quiet room will be about 30 dBA.
- Although most devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. To calibrate, you will need a real external device or calibrated sound meter as a reference, then adjust the trimming value until the reading matches with the reference.
If you like it or have suggestions, please support us by rating and giving us comments and feedback.
What's new in 9.3.9
∿ NEW: Calibration guide - check your microphone, see whether a quiet room reads sensibly, and learn how accurate phone measurements really are. On the Calibration screen.
∿ NEW: Search and filter recordings in the Data tab.
∿ IMPORTANT: Levels have changed. They now come from your microphone's rated sensitivity and may read higher than before. Re-check your calibration if you need exact figures.
∿ Faster startup, crash fixes and minor improvements.
∿ NEW: Search and filter recordings in the Data tab.
∿ IMPORTANT: Levels have changed. They now come from your microphone's rated sensitivity and may read higher than before. Re-check your calibration if you need exact figures.
∿ Faster startup, crash fixes and minor improvements.