# SimpleFFT vs SysX Buddy

The clearest difference is price: SimpleFFT at Free against SysX Buddy's $4.99. SysX Buddy's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

SimpleFFT is free to download; SysX Buddy costs $4.99 up front. SimpleFFT sells 1 one-off in-app purchase. SysX Buddy asks for nothing beyond the download.

SimpleFFT ships an update every 18 months, SysX Buddy every 2 months. The most recent releases landed on August 28, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | SimpleFFT | SysX Buddy |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sysx-buddy/id6748940731/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 2 months** |
| Monetization | — | Paid |
| Size | 5 MB | 1 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HIROFUMI MARUO](https://appshunter.io/developer/667820705) | [Ryouta Kira](https://appshunter.io/developer/862984358) |

## 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 |


### SysX Buddy

[App page](https://appshunter.io/ios/app/sysx-buddy/id6748940731)

Manage MIDI System Exclusive messages on your iPhone or iPad. This utility allows you to send, receive, edit, and organize SysEx data for vintage synthesizers and sound modules. It supports external MIDI devices and BLE-MIDI, bridging classic instruments with modern mobile technology.

**Highlights:** Send and receive MIDI SysEx messages, File manager with folder creation, Hex viewer for SysEx data, Create and edit SysEx files, Support for USB MIDI devices, Support for BLE-MIDI, iCloud Drive integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SimpleFFT free?

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

### Is SysX Buddy free?

SysX Buddy costs $4.99, with no in-app purchases.

### Do SimpleFFT or SysX Buddy have ads?

SimpleFFT shows ads; SysX Buddy does not.

### Which is updated more often, SimpleFFT or SysX Buddy?

SimpleFFT ships an update every 18 months, and SysX Buddy every 2 months. Most recently, SimpleFFT was updated on August 28, 2026 and SysX Buddy on September 5, 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.*