Audio Function Generator PRO Downloads & RevenueAudio Function Generator PRO · App Store
Audio Function Generator PRO is #39 in Music Paid in Germany and charting in 2 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperThomas Gruber
CategoryMusic
Price14.99 USD
Released
Rating★ 4.8 (271)
Version9.4.0
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)10k+ worldwide
Audio Function Generator PRO update history & changes
Last change · 32 events since 15 Jul 2014Full timeline ↓📈Charting in a new country📈Entered the top 10💰Price rise💰Price rise⭐Passed 100 ratings⭐Passed 100 ratings📦Updated to version 9.4.0🆕First spotted by AppInsider📦Version 9.3.0🆕Released on the App Store
Full timeline · 32 events
- 📈Audio Function Generator PRO charting in a new countryMexico
- 📈Audio Function Generator PRO entered the top 10Top Paid · Music · AE
- 📈Audio Function Generator PRO charting in a new countryUnited Arab Emirates
- 💰Audio Function Generator PRO: price rise14.99 AUD → 19.99 AUD · AU
- 💰Audio Function Generator PRO: price rise12.99 CAD → 17.99 CAD · CA
- 💰Audio Function Generator PRO: price rise8.99 GBP → 12.99 GBP · GB
- 💰Audio Function Generator PRO: price rise9.99 USD → 14.99 USD · US
- 💰Audio Function Generator PRO: price rise15000.00 KRW → 22000.00 KRW · KR
- 💰Audio Function Generator PRO: price rise9.99 EUR → 14.99 EUR · DE
- 💰Audio Function Generator PRO: price rise58.00 CNY → 88.00 CNY · CN
- 📈Audio Function Generator PRO entered the top 100Top Paid · Music · CN
- 📈Audio Function Generator PRO charting in a new countryChina
- 📈Audio Function Generator PRO entered the top 100Top Paid · Music · GB
- 📈Audio Function Generator PRO charting in a new countryUnited Kingdom
- ✏️Audio Function Generator PRO: needs a newer iOSiOS 15.5 → iOS 16.0
- 📦Audio Function Generator PRO updated to version 9.4.0• support for iPhone Duo
• added a Scale Trainer feature (Musical Notes popover), which plays a series of notes in a loop. You pick a key and scale or enter your own notes, and set the octave, tempo (BPM), beats per note, a pattern and repeat.
• added support for the Playback Start Timer and Playback Stop Timer to the MultiTone main view
• Extended Sweep View optimisations for smaller screens (Volume, Frequency+Volume)… more - 📈Audio Function Generator PRO new best rank in the overall chart: #99Top Paid · All Apps · ZA
- 📈Audio Function Generator PRO entered the top 100Top Paid · All Apps · ZA
- 📈Audio Function Generator PRO charting in a new countrySouth Africa
- 📈Audio Function Generator PRO new best rank in the overall chart: #105Top Paid · All Apps · TW
- 📈Audio Function Generator PRO charting in a new countryTaiwan
- 📈Audio Function Generator PRO entered the top 100Top Paid · Music · US
- 📈Audio Function Generator PRO entered the top 100Top Paid · Music · FR
- 📈Audio Function Generator PRO charting in a new countryFrance
- 📈Audio Function Generator PRO entered the top 10Top Paid · Music · KR
- 🆕Audio Function Generator PRO first spotted by AppInsider#77 in Top Paid · Music · South Korea
- 📦Audio Function Generator PRO version 9.3.0User interface improvements for the DualTone generator
Sequence Playback (MultiTone) UI optimisations
Dark Mode improvements - 🆕Audio Function Generator PRO released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.8 ★
271 ratings
Measured
Best rank now
#39
Music PaidMeasured
Audio Function Generator PRO on the App Store
App details
App ID
895074703
Publisher
Thomas Gruber
On the store since
Jul 2014
12 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
8
EN FR DE JA KO PT ZH ES
Size
14 MB
Also listed in
Utilities
Audio Function Generator PRO 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.
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.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Germany | MusicPaid | #39 |
 United Arab Emirates | MusicPaid | #158 |
Apps near Audio Function Generator PRO on the chart
Music Paid, around #39.
Ratings
App Store, worldwide.
Rating
4.8 ★
271 ratings
Measured
Ratings
271
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.8★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
46/100
faster than 43% of Music 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 Audio Function Generator PRO
From the 30 most recent App Store reviews in the US.
Users highly value the app's versatility, precision, and extensive feature set for professional audio testing, tuning, and therapeutic uses. While most reviews are positive, a minority report critical stability issues such as crashes, unresponsive controls, and frequency sticking on specific devices.
Mostly positive (87% of recent reviews give 4–5 stars). People like it for being easy to use, and its features and content. Recent reviews are more positive than earlier ones.
What people like
- Ease of use: “Super convenient tone generator with sweep”
- Features & content: “Other than that nice app with lots of features”
- Price & subscription: “An excellently engineered audio generator at a most reasonable price”
- Useful: “Works perfectly with full range of frequencies!”
About Audio Function Generator PRO
This is the highly recommended and praised Function Generator App - an amazingly great and powerful tone generator. Enriched with a vast amount of features yet it is extremely intuitive and designed for simplicity.
Get to know this great App now! It is very well maintained and has received considerable upgrades over the past years.
So, … what can you do with this App?
• PLAY TEST TONES Sine, Rectangular, Triangular and Sawtooth.
• PLAY FREQUENCY SWEEP TEST TONES in both directions (minimum to maximum frequency and maximum to minimum frequency).
• PLAY VOLUME SWEEPS (from minimum to maximum volume).
• Try the SWEEP REPEAT / WOBBLE function.
• Try the MUSIC TONES PLAYBACK.
• Experiment with the huge FINE TUNE SELECTON, PRESETS SELECTION!
• Or create your own CUSTOM PRESETS!
• And SAVE an endless amount of CONFIGURATIONS (Frequency, Sweep, Noise) for later quick access and direct playback function.
• Even play back different kinds of NOISE – White, Pink, Violet, Grey, Brown, Blue is also supported.
The Function Generator is AMAZINGLY INTUITIVE and SIMPLE!
AND THESE ARE THE ADVANCED SETTINGS/FEATURES:
=> Extending The Frequency Range (1Hz - 21kHz)
=> Extending The Sweep Times (0.1s - 600s)
=> Changing Min/Max Slider Frequency Ranges
=> Changing Max Sweep Time Slider Range
=> Changing Signal Amplitude
=> Enabling Of The Sweep Repeat / Wobble Function
=> Frequency Slider Setting to Linear or Logarithmic
=> Left/Right Channel Individual Selection
=> Permanently Saving Custom Presets
=> Saving Of Endless Number Of Audio Configurations
=> Phase Out Setting (custom phase shift of the generated signal)
=> BPM (Beats per Minute) Feature
=> Dual Function Generator
=> MultiTone Generator (playback of up to eight individual tones)
=> Background Theme Selection (Light/Dark)
Check out the new Tutorial page: www.ee-toolkit.com/audio-function-generator
Get to know this great App now! It is very well maintained and has received considerable upgrades over the past years.
So, … what can you do with this App?
• PLAY TEST TONES Sine, Rectangular, Triangular and Sawtooth.
• PLAY FREQUENCY SWEEP TEST TONES in both directions (minimum to maximum frequency and maximum to minimum frequency).
• PLAY VOLUME SWEEPS (from minimum to maximum volume).
• Try the SWEEP REPEAT / WOBBLE function.
• Try the MUSIC TONES PLAYBACK.
• Experiment with the huge FINE TUNE SELECTON, PRESETS SELECTION!
• Or create your own CUSTOM PRESETS!
• And SAVE an endless amount of CONFIGURATIONS (Frequency, Sweep, Noise) for later quick access and direct playback function.
• Even play back different kinds of NOISE – White, Pink, Violet, Grey, Brown, Blue is also supported.
The Function Generator is AMAZINGLY INTUITIVE and SIMPLE!
AND THESE ARE THE ADVANCED SETTINGS/FEATURES:
=> Extending The Frequency Range (1Hz - 21kHz)
=> Extending The Sweep Times (0.1s - 600s)
=> Changing Min/Max Slider Frequency Ranges
=> Changing Max Sweep Time Slider Range
=> Changing Signal Amplitude
=> Enabling Of The Sweep Repeat / Wobble Function
=> Frequency Slider Setting to Linear or Logarithmic
=> Left/Right Channel Individual Selection
=> Permanently Saving Custom Presets
=> Saving Of Endless Number Of Audio Configurations
=> Phase Out Setting (custom phase shift of the generated signal)
=> BPM (Beats per Minute) Feature
=> Dual Function Generator
=> MultiTone Generator (playback of up to eight individual tones)
=> Background Theme Selection (Light/Dark)
Check out the new Tutorial page: www.ee-toolkit.com/audio-function-generator
Latest updates
9.4.0
• support for iPhone Duo
• added a Scale Trainer feature (Musical Notes popover), which plays a series of notes in a loop. You pick a key and scale or enter your own notes, and set the octave, tempo (BPM), beats per note, a pattern and repeat.
• added support for the Playback Start Timer and Playback Stop Timer to the MultiTone main view
• Extended Sweep View optimisations for smaller screens (Volume, Frequency+Volume)
9.3.0
User interface improvements for the DualTone generator
Sequence Playback (MultiTone) UI optimisations
Dark Mode improvements
Store changes
What Audio Function Generator PRO changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Price rise 
14.99 AUD → 19.99 AUD
Price rise 
12.99 CAD → 17.99 CAD
Price rise 
8.99 GBP → 12.99 GBP
