SimpleFFT vs o46scope
Price, ratings, monetisation and update history for both apps, side by side β 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.
o46scope
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o46scope is an audio measurement app for iPhone and iPad that helps you visualize sound in real time. It supports oscilloscope and FFT spectrum display, allowing you to inspect waveforms and frequency components instantly. The app also supports internal signal generation with Tone1 / Tone2 and test signal (Beep) output, making it useful for quick checks, learning, and simple audio measurement tasks. Key features β’ Oscilloscope display β’ FFT spectrum display β’ Signal tab for signal control β’ Internal signal generation with Tone1 / Tone2 β’ Speaker output for tones β’ Test signal (Beep) output β’ Adjustable parameters Premium Tone1 / Tone2 internal signal generation is available as a premium feature. It is available without ads. Ideal for users who want waveform visualization, frequency analysis, and signal generation in one app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: o46scope at none against SimpleFFT's shown. o46scope also leads on update cadence (every 6 weeks vs every 18 months) and iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. SimpleFFT sells 1 one-off in-app purchase and o46scope sells 1 in-app purchase, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.
SimpleFFT ships an update every 18 months, o46scope every 6 weeks. The most recent releases landed on August 28, 2026 and September 10, 2026 respectively.
| Parameter | SimpleFFT | o46scope |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 18 months | Every 6 weeks β better |
| Ads | Yes | No β better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 β better |
| Further details β not scored | ||
| Size | 5 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | HIROFUMI MARUO | Shinsuke Tsutsui |
In-app purchases
SimpleFFT
- Premium Functions$0.49
o46scope
- Premium7 Days trial$19.991 Year
