# SimpleFFT vs SonusVue

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.

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.

## The numbers

| Metric | SimpleFFT | SonusVue |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sonusvue/id1245323501/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | Every 18 months |
| Monetization | — | Free |
| Size | 5 MB | 31 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HIROFUMI MARUO](https://appshunter.io/developer/667820705) | [IRISS Inc](https://appshunter.io/developer/1245323320) |

## What reviewers say

### SimpleFFT

[App page](https://appshunter.io/ios/app/simplefft/id1239257017)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Functions | $0.49 | one-time |


### SonusVue

[App page](https://appshunter.io/ios/app/sonusvue/id1245323501)

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.

**Highlights:** Real-time frequency analysis, Record and playback audio, Adjustable sampling frequency, Logarithmic scale spectrum display, Configurable FFT resolution, User-configurable spectrum averaging

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SimpleFFT free?

SimpleFFT is free to download, with in-app purchases available.

### Is SonusVue free?

SonusVue is free to download, with no in-app purchases.

### Do SimpleFFT or SonusVue have ads?

SimpleFFT shows ads; SonusVue does not.

### Which is updated more often, SimpleFFT or SonusVue?

SimpleFFT ships an update every 18 months, and SonusVue every 18 months. Most recently, SimpleFFT was updated on October 10, 2026 and SonusVue on October 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*