# TerribleSync vs JHG Rhythm Toolkit

The clearest difference is in-app purchases: TerribleSync at none against JHG Rhythm Toolkit's 3. TerribleSync also leads on iOS requirement (12.0 vs 15.0). JHG Rhythm Toolkit's advantage is update cadence (monthly vs every 35 months). On price, ads and device support there is nothing between them.

Both are free to download. JHG Rhythm Toolkit sells 3 in-app purchases, starting at $0.99 per month. TerribleSync asks for nothing beyond the download.

TerribleSync ships an update every 35 months, JHG Rhythm Toolkit monthly. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | TerribleSync | JHG Rhythm Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/terriblesync/id1109759662/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 35 months | **Monthly** |
| Monetization | Free | — |
| Size | 1 MB | 37 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Benjamin Roth](https://appshunter.io/developer/448057425) | [Jamie Harrison Media Ltd.](https://appshunter.io/developer/1498374304) |

## What reviewers say

### TerribleSync

[App page](https://appshunter.io/ios/app/terriblesync/id1109759662)

Control the tempo of music hardware like synthesizers and drum machines using your iPhone or iPad. Features include tap tempo, precise dial adjustment, and buttons for performance effects. Requires a 3.5mm audio cable for connection.

**Highlights:** Tap tempo, Rotary tempo dial, Pause/mute button, Performance effect buttons, Clear interface, Open source project

**Features:** macOS Compatibility

**In-app purchases:** none


### JHG Rhythm Toolkit

[App page](https://appshunter.io/ios/app/jhg-rhythm-toolkit/id6471913481)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| 7 Days Free Trial | $8.99 | per year |
| Annual Subscription | $8.99 | per year |


## Frequently asked questions

### Is TerribleSync free?

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

### Is JHG Rhythm Toolkit free?

JHG Rhythm Toolkit is free to download, with in-app purchases available.

### Do TerribleSync or JHG Rhythm Toolkit have ads?

Neither TerribleSync nor JHG Rhythm Toolkit shows ads.

### Which is updated more often, TerribleSync or JHG Rhythm Toolkit?

TerribleSync ships an update every 35 months, and JHG Rhythm Toolkit monthly. Most recently, TerribleSync was updated on October 24, 2026 and JHG Rhythm Toolkit on October 16, 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.*