SimpleFFT vs SonusVue
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SimpleFFT
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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.
SonusVue
This utility analyzes real-time audio frequencies, allowing users to record, play back, and visualize sound signals. It offers adjustable sampling rates and detailed spectrum display options, including logarithmic scales and FFT resolution.
- Real-time frequency analysis
- Record and playback audio
- Adjustable sampling frequency
- Logarithmic scale spectrum display
- Configurable FFT resolution
- User-configurable spectrum averaging
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Real time frequency/spectrum analyzer allows you to record and play back the recordings while observing time signal and frequency spectrum in real time. The sampling frequency can be adjusted by the user. It starts at 200Hz and goes up to 44.1kHz. The recorded files can be deleted, if desired, from the app. The spectrum can be displayed in logarithmic scale (dB), with user specified number number of points of FFT (resolution), interpolation factor, integrated or differentiated and with various windowing functions. User configurable spectrum averaging is available. The app requires login information from IRISS Inc.
Screenshots
Verdict
The clearest difference is in-app purchases: SonusVue at none against SimpleFFT's 1. SonusVue also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). On price, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SimpleFFT sells 1 one-off in-app purchase. SonusVue asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 18 months. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.
| Parameter | SimpleFFT | SonusVue |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 18 months | Every 18 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | HIROFUMI MARUO | IRISS Inc |
In-app purchases
SimpleFFT
- Premium Functions$0.49
SonusVue
No in-app purchases
