# TerribleSync vs VAPolyFMWest

The clearest difference is price: TerribleSync at Free against VAPolyFMWest's $14.99. TerribleSync also leads on iOS requirement (12.0 vs 16.6). VAPolyFMWest's advantage is rating (5.0 vs 4.0) and update cadence (every 4 days vs every 35 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

TerribleSync is free to download; VAPolyFMWest costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

VAPolyFMWest holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively.

TerribleSync ships an update every 35 months, VAPolyFMWest every 4 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TerribleSync | VAPolyFMWest |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/terriblesync/id1109759662/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/vapolyfmwest/id6770355973/reviews)** |
| Number of ratings | **4** | 3 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 4 days** |
| Monetization | **Free** | Paid |
| Size | 1 MB | 19 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Roth](https://appshunter.io/developer/448057425) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## 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


### VAPolyFMWest

[App page](https://appshunter.io/ios/app/vapolyfmwest/id6770355973)

This app combines FM and West Coast synthesis with a 4-operator FM engine and wave folder/lowpass gate. It offers a standalone mode with Ableton Link and MIDI support, plus an AudioUnit Extension for iOS and Mac. Includes built-in effects and a step sequencer.

**Highlights:** 4-operator FM synthesizer, Wave folder and lowpass gate, AudioUnit Extension (AUv3) support, Ableton Link and MIDI connectivity, Built-in delay, chorus, reverb, EQ, compressor, 3-channel step sequencer, iCloud Drive project sharing

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TerribleSync free?

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

### Is VAPolyFMWest free?

VAPolyFMWest costs $14.99, with no in-app purchases.

### Which has better reviews, TerribleSync or VAPolyFMWest?

VAPolyFMWest is rated higher. TerribleSync averages 4.0 out of 5 from 4 ratings, while VAPolyFMWest averages 5.0 from 3 ratings.

### Do TerribleSync or VAPolyFMWest have ads?

Neither TerribleSync nor VAPolyFMWest shows ads.

### Which is updated more often, TerribleSync or VAPolyFMWest?

TerribleSync ships an update every 35 months, and VAPolyFMWest every 4 days. Most recently, TerribleSync was updated on October 2, 2026 and VAPolyFMWest on October 7, 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.*