SimpleFFT
HIROFUMI MARUO Utilities iPhoneiPadiPod touch
SimpleFFT is a free Utilities app for iPhone and iPad by HIROFUMI MARUO. Requires iOS 15.0. Updated December 12, 2025.
- Price
- Free
- on the App Store
- Size
- 5 MB
- Age 4+
- Updated
- Dec 12
- 2025 · v2.1
Screenshots
About SimpleFFT
This app can easily analyze the frequency of sound. For the sound of the recording file recorded at each refresh time interval, FFT is executed and displayed for the four voices collected one after another at each refresh interval.
What’s new
Version 2.1 · Updated December 12, 2025
Fixed some minor bugs.
App privacy
The developer, HIROFUMI MARUO, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
- Diagnostics: Crash Data, Performance Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Usage Data: Product Interaction, Advertising Data
- Diagnostics: Performance Data
- Identifiers: Device ID
Used for: Third-Party Advertising, Other Purposes
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Diagnostics: Crash Data
Used for: Third-Party Advertising
Alternatives to SimpleFFT
Looking for apps like SimpleFFT? Here are 6 similar apps on the App Store. The highest rated is N-Signal / FFT Sound Analyzer (5.0/5), and all 6 are free to download.
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Audio SA
-
N-Signal / FFT Sound Analyzer
5.0
-
SignalScope X
3.0
-
Sound Spectrum Analysis
3.6
-
Spectrolite
4.8
-
HAA CinemaTools with HAA Link
5.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| SimpleFFT | – | Free | December 12, 2025 | |
| Audio SA | – | Free | Aug 24, 2026 | Compare |
| N-Signal / FFT Sound Analyzer | 5.0 / 5 (2) | Free | Jan 8, 2026 | Compare |
| SignalScope X | 3.0 / 5 (23) | Free | Oct 16, 2026 | Compare |
| Sound Spectrum Analysis | 3.6 / 5 (42) | Free | Sep 5, 2026 | Compare |
| Spectrolite | 4.8 / 5 (64) | Free | Oct 10, 2026 | Compare |
| HAA CinemaTools with HAA Link | 5.0 / 5 (1) | Free | Oct 20, 2026 | Compare |
Compare SimpleFFT with the top alternatives: ratings, updates, ASO score and keyword gaps →