Spectrum Analyzer+ Audio FFT Downloads & RevenueSpectrum Analyzer+ Audio FFT · App Store
Not in any tracked top chart right now.
Updated 12 Nov 2026 · rankings refresh through the day
DeveloperKyu-Hee Jang
CategoryUtilities
PriceFree
Released
Rating★ 2.6 (5)
Version1.0.36
Age rating17+
First seen by us
23 Oct 2026
23 Oct 2026Installs (est.)1k+ worldwide
Spectrum Analyzer+ Audio FFT update history & changes
Last change · 10 events since 31 Mar 2026Full timeline ↓📦Updated to version 1.0.37📦Updated to version 1.0.36🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 10 events
- 📦Spectrum Analyzer+ Audio FFT updated to version 1.0.37• The Save, CSV and Share buttons of the 5-s average card now show whole words on small screens, in every language.
• Larger tap areas for the header buttons, the card's close button and the Calibration −/+ buttons; VoiceOver reads them as “Calibration −0.5 dB” and “+0.5 dB”.… more - ✏️Spectrum Analyzer+ Audio FFT: app got bigger72 MB → 100 MB (+39%)
- 📦Spectrum Analyzer+ Audio FFT updated to version 1.0.36• Fixed an error in the audio engine of Spectrum Analyzer+ that could close the app unexpectedly when the analyzer or the Pink Noise Generator was stopped or switched.
• Bars, Line, Waterfall and Spectrogram, Capture 5 s and calibration work as before, and your saved traces and settings are kept.… more - 📦Spectrum Analyzer+ Audio FFT: now updating weekly4 updates in 30 days, after a quiet two months
- 📦Spectrum Analyzer+ Audio FFT updated to version 1.0.35• The first time you open Spectrum Analyzer+ after installing, the Analyzer tab comes up with less waiting, so you can tap Start and watch the live spectrum sooner.
• Bars, Line, Waterfall and Spectrogram views, Capture 5 s and the Pink Noise Generator work as before.
• Your saved traces, calibration and settings stay exactly as they were.… more - 📦Spectrum Analyzer+ Audio FFT updated to version 1.0.34• Spectrum Analyzer+ is rebuilt on a newer, shared foundation.
• The live spectrum, Capture 5 s, saved traces, Calibration and settings carry over unchanged.
• Where privacy choices apply in your region, you can reopen them from the menu.… more - 📦Spectrum Analyzer+ Audio FFT updated to version 1.0.33• After "Capture 5 s", the result now lists up to 5 peaks under "Peaks": frequency, level in dB, the note name in Voice mode, and "n× strongest" when a peak sits at a whole-number multiple of the strongest one.
• Tap a peak to mark it on the Line chart. The peaks are also included in Export CSV and Share.
• On short screens, Save, Export CSV and Share now sit right under the strongest component.
• First launch: while the privacy choices form or the tracking question is on screen, the start screen now holds its wait for the launch ad and carries on once you answer.
• Later launches: the launch ad starts loading earlier, so the start screen in front of the "Analyzer" tab clears sooner.… more - 🆕Spectrum Analyzer+ Audio FFT first spotted by AppInsiderUnited States (found via developer)
- 📦Spectrum Analyzer+ Audio FFT version 1.0.31• The rating request no longer appears when the app starts. It now appears at most once, about 4 seconds after your third finished “Capture 5 s” result since this update.
• It only appears if you have not touched the screen or left the app since that result, no capture is running and no automatic full-screen ad was shown in the last 30 seconds; otherwise it waits for a later capture.
• “Review” in the menu is unchanged.… more - 🆕Spectrum Analyzer+ Audio FFT 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
2.6 ★
5 ratings
Measured
Spectrum Analyzer+ Audio FFT on the App Store
App details
App ID
6760830858
Publisher
Kyu-Hee Jang
On the store since
Mar 2026
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Content rating
17+
Languages
1
EN
Size
100 MB
Also listed in
Productivity
Spectrum Analyzer+ Audio FFT 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 |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
2.6 ★
5 ratings
Measured
Ratings
5
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
2.6★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
55/100
faster than 58% 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.
About Spectrum Analyzer+ Audio FFT
Spectrum Analyzer+ Audio FFT shows the live frequency spectrum of any sound your iPhone microphone hears, then lets you capture a 5-second average and read the result: the strongest frequency in Hz, the top components and where the energy sits.
▶ See the spectrum live
• 32 bands from 20 Hz to 20 kHz, computed with a 2048-point FFT
• Four views: Bars with peak hold, Line, Waterfall and Spectrogram
• Peak frequency and peak level update as you listen
• Min / Max traces in the Bars view, tap a bar for a cursor readout, freeze the display to study it
• Adjustable dB range from 30 to 120 dB
▶ Capture 5 seconds, get an answer
Tap Capture 5 s under the graph and hold the sound steady. The app power-averages the spectrum over five seconds and shows a result card:
• Strongest component in Hz, with the musical note and cents in Voice mode
• Up to three top components with their levels
• Share of the detected energy in the low, mid and high part of the selected range
• Strongest band level and the FFT resolution of the measurement
If the sound is too quiet in that range, the card says so instead of inventing a peak.
▶ Compare before and after
Save a capture as a reference (up to 10). Make a change — move a speaker, add treatment, adjust a machine — capture again in the same mode and the card shows the average band-level difference in dB. References can also be overlaid on the live spectrum.
▶ Pick the job
• Voice: 80–4000 Hz, shows the note of the strongest pitch
• Machine: 20–2000 Hz, looks for 50/60 Hz mains hum and its harmonics
• Room: 20–500 Hz, the low end where room modes build up
▶ Export and share
• Export a CSV of the live spectrum or of a 5-second capture
• Share a short text summary of a capture
▶ Extras
• Calibration offset from −20 to +20 dB in 0.5 dB steps to line up with a reference meter
• Pink noise generator, unlocked for 24 hours by watching a short ad
• Interface in 30 languages
▶ Good to know
Levels are relative to the microphone's full scale (dBFS). A phone microphone is not a certified sound level meter, so use the numbers to find frequencies and compare changes, not for compliance measurements. Audio is analysed in memory while you listen and is not saved as a recording.
For musicians checking a tone, home studio and hi-fi owners chasing a boomy note, and anyone tracking down a hum from a fridge, fan or transformer.
▶ See the spectrum live
• 32 bands from 20 Hz to 20 kHz, computed with a 2048-point FFT
• Four views: Bars with peak hold, Line, Waterfall and Spectrogram
• Peak frequency and peak level update as you listen
• Min / Max traces in the Bars view, tap a bar for a cursor readout, freeze the display to study it
• Adjustable dB range from 30 to 120 dB
▶ Capture 5 seconds, get an answer
Tap Capture 5 s under the graph and hold the sound steady. The app power-averages the spectrum over five seconds and shows a result card:
• Strongest component in Hz, with the musical note and cents in Voice mode
• Up to three top components with their levels
• Share of the detected energy in the low, mid and high part of the selected range
• Strongest band level and the FFT resolution of the measurement
If the sound is too quiet in that range, the card says so instead of inventing a peak.
▶ Compare before and after
Save a capture as a reference (up to 10). Make a change — move a speaker, add treatment, adjust a machine — capture again in the same mode and the card shows the average band-level difference in dB. References can also be overlaid on the live spectrum.
▶ Pick the job
• Voice: 80–4000 Hz, shows the note of the strongest pitch
• Machine: 20–2000 Hz, looks for 50/60 Hz mains hum and its harmonics
• Room: 20–500 Hz, the low end where room modes build up
▶ Export and share
• Export a CSV of the live spectrum or of a 5-second capture
• Share a short text summary of a capture
▶ Extras
• Calibration offset from −20 to +20 dB in 0.5 dB steps to line up with a reference meter
• Pink noise generator, unlocked for 24 hours by watching a short ad
• Interface in 30 languages
▶ Good to know
Levels are relative to the microphone's full scale (dBFS). A phone microphone is not a certified sound level meter, so use the numbers to find frequencies and compare changes, not for compliance measurements. Audio is analysed in memory while you listen and is not saved as a recording.
For musicians checking a tone, home studio and hi-fi owners chasing a boomy note, and anyone tracking down a hum from a fridge, fan or transformer.
Latest updates
1.0.37
• The Save, CSV and Share buttons of the 5-s average card now show whole words on small screens, in every language.
• Larger tap areas for the header buttons, the card's close button and the Calibration −/+ buttons; VoiceOver reads them as “Calibration −0.5 dB” and “+0.5 dB”.
1.0.36
• Fixed an error in the audio engine of Spectrum Analyzer+ that could close the app unexpectedly when the analyzer or the Pink Noise Generator was stopped or switched.
• Bars, Line, Waterfall and Spectrogram, Capture 5 s and calibration work as before, and your saved traces and settings are kept.
1.0.35
• The first time you open Spectrum Analyzer+ after installing, the Analyzer tab comes up with less waiting, so you can tap Start and watch the live spectrum sooner.
• Bars, Line, Waterfall and Spectrogram views, Capture 5 s and the Pink Noise Generator work as before.
• Your saved traces, calibration and settings stay exactly as they were.
Store changes
What Spectrum Analyzer+ Audio FFT changed on its store page: name, icon, screenshots, price, size, languages, requirements.
App got bigger
72 MB → 100 MB (+39%)
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