# Overdrive Synth vs izi Sync

The clearest difference is in-app purchases: izi Sync at none against Overdrive Synth's 1. izi Sync also leads on update cadence (every 4 days vs monthly). Overdrive Synth's advantage is device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Overdrive Synth sells 1 one-off in-app purchase. izi Sync asks for nothing beyond the download.

Overdrive Synth ships an update monthly, izi Sync every 4 days. The most recent releases landed on October 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Overdrive Synth | izi Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (34 ratings)](https://appshunter.io/ios/app/overdrive-synth/id1612690745/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | 79.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 247 MB | 34 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Moby Pixel](https://appshunter.io/developer/1435802052) | [PHILIPPE BOUTIN](https://appshunter.io/developer/6781969017) |

## What reviewers say

### Overdrive Synth

[App page](https://appshunter.io/ios/app/overdrive-synth/id1612690745)

Explore unique synth sounds processed through classic guitar overdrive pedals. This app offers professionally recorded samples with multiple keyboard layouts and AUv3/MIDI support. Unlock over 100 additional instruments to expand your sonic palette.

**Highlights:** Vintage synths re-amped through guitar pedals, Multiple keyboard layouts, AUv3 and MIDI support, Professionally recorded samples, Expandable instrument library via IAP

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full Version | $4.99 | one-time |


### izi Sync

[App page](https://appshunter.io/ios/app/izi-sync/id6781969015)

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

**In-app purchases:** none


## Frequently asked questions

### Is Overdrive Synth free?

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

### Is izi Sync free?

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

### Do Overdrive Synth or izi Sync have ads?

Neither Overdrive Synth nor izi Sync shows ads.

### Which is updated more often, Overdrive Synth or izi Sync?

Overdrive Synth ships an update monthly, and izi Sync every 4 days. Most recently, Overdrive Synth was updated on October 17, 2026 and izi Sync on October 1, 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.*