FFT Downloads & RevenueFFT · App Store
FFT is #42 in Music Paid in South Korea and charting in 4 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
25 Sep 2026Full timeline · 17 events
- 📈FFT new best rank in the overall chart: #104Top Paid · All Apps · MY
- 📈FFT charting in a new countryMalaysia
- 📈FFT entered the top 100Top Paid · Music · CA
- 📈FFT charting in a new countryCanada
- 📦FFT updated to version 7.10New in this release:
- Ready for iPhone Duo: every screen adapts to closed, open, book and tent, with controls in the side strip.
- iOS 26 appearance adopted.
- Bug fixes and stability improvements - 📈FFT entered the top 100Top Paid · Music · JP
- 📈FFT charting in a new countryJapan
- 📈FFT new best rank in the overall chart: #123Top Paid · All Apps · KR
- 📈FFT entered the top 100Top Paid · Music · CN
- 📈FFT charting in a new countryChina
- 📈FFT new best rank in the overall chart: #150Top Paid · All Apps · KR
- 📈FFT charting in a new countrySpain
- 📈FFT entered the top 10Top Paid · Music · KR
- 📈FFT entered the top 100Top Grossing · Music · KR
- 🆕FFT first spotted by AppInsider#91 in Top Paid · Music · South Korea
- 📦FFT version 7.9-Bug fixes and stability improvements
-Updated for latest iOS and devices - 🆕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.
Music PaidFFT on the App Store
App details
App privacy Measured
FFT declares it collects no data at all — the rarest and most private label on the App Store.
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
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
Where FFT'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.
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | MusicPaid | #42 |
 Canada | MusicPaid | #79 |
 Indonesia | MusicPaid | #125 |
 Malaysia | All AppsPaid | #155 |
Apps near FFT on the chart
Music Paid, around #42.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview 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 FFT
From the 20 most recent App Store reviews in the US.
Users highly value the app's accuracy and utility for professional audio troubleshooting and system tuning. However, recent updates have introduced stability issues on newer iOS versions, and some users find the continuous spectrum display insufficient for precise quantitative analysis.
Mostly positive (85% of recent reviews give 4–5 stars). People like it for its features and content, and being useful. The main complaints are about crashes and bugs, and recent updates. Recent reviews are more negative than earlier ones.
What people like
- Features & content: “2) An A-weighted scale option”
- Useful: “Would really like to see two features added to make it less of a toy and more of a useful tool”
- Price & subscription: “Priceless tool for debugging anything that makes noise”
- Ease of use: “Lots of options and easy to use!”
Common complaints
- Crashes & bugs: “It's crashed 3 times in about a minute”
- Updates: “Great app but it’s crashing with my update to iOS 17.4.1”
About FFT
Use this app with the built-in iOS device microphone, or upgrade to our iAudioInterface2 or iTestMic for a complete professional solution.
*** Designed for Acoustical Analysis
This application has been designed for acoustics work, and so the bins have been normalized to octaves, to get a display that will show a flat line for pink noise. You can control both the level of graph smoothing and decay time, to get as much or as little detail as you require.
You can also control the dB resolution of the graph, as well as the frequency range that is displayed.
*** Includes Signal Generator
Included in this app is the engine from our Generator app, which is a low-distortion, artifact-free signal generator. The signal generator appears as a heads-up display when you tap the icon, so you can see the graph while you adjust the generator. Generate sine waves, square waves (within limits), white noise, and pink noise, optionally in psuedo-balanced mode. All waveforms are generated in real time using high-precision algorithms.
*** Cursor Readout
Move your finger across the screen to get a cursor to read out exact dB levels and frequencies.
*** Touch-GUI Controls
Use a vertical pinch-open gesture to expand the dB scale.
Use a horizontal pinch-open gesture to expand the frequency scale.
*** Graph Smoothing
Smooth the graph by octave, 1/3, 1/6, 1/12, or 1/24 octave. Adjust the decay time from 0.5 seconds, for a very fast fluid display, to 8 seconds, or use Peak Hold or Average mode. Average mode is a true equal-weighted average, which can run continuously.
*** Peak Tracking
Turn on Peak Tracking to have FFT automatically find a label the frequency of the highest peak on your graph.
*** Tune the Parameters
Set the FFT size from 4096 to 32k points (depending on iOS device) , or select Equal Points Per Octave mode, for high-resolution analysis, even at low frequencies.
*** Calibration
FFT comes calibrated for the typical iPad, iPod touch, or iPhone microphone, and you can adjust the calibration. Microphone compensation files tailored to each iOS device are automatically applied.
*** Save and Recall
When your analysis is complete, you can save the graph image to your photo roll to include in a report, or export the data in an XLS file.
*** Display Multiple Graphs
Show a recalled graph on the screen in a different color.
*** Difference Mode
Use a stored graph as a baseline that is subtracted from the current graph in real time.
*** RTA or FFT?
If you are wondering if you should download this app or our FFT app, check out our website, we have a page devoted to this topic.
*** Other Audio Apps
Also, check out our other great audio and acoustics apps: AudioTools, our premier suite of audio and acoustics analysis apps, SPL, SPL Graph, for r
