# Manager for OP1 vs Yarn Unit Converter

The clearest difference is in-app purchases: Yarn Unit Converter at none against Manager for OP1's 3. Yarn Unit Converter also leads on update cadence (every 2 days vs every 4 months). Manager for OP1's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Manager for OP1 sells 3 in-app purchases, starting at $4.99 per month. Yarn Unit Converter asks for nothing beyond the download.

Manager for OP1 ships an update every 4 months, Yarn Unit Converter every 2 days. The most recent releases landed on October 22, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Manager for OP1 | Yarn Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (12 ratings)](https://appshunter.io/ios/app/manager-for-op1/id1521159543/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 24.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 6 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Red Door Endeavors Inc.](https://appshunter.io/developer/1256077244) | [SEMIH EKIN](https://appshunter.io/developer/1862911075) |

## What reviewers say

### Manager for OP1

[App page](https://appshunter.io/ios/app/manager-for-op1/id1521159543)

Easily sync, save, and share your OP-1 projects. Import and export all four tracks to and from your device via USB. Offers iCloud Drive synchronization and cross-platform compatibility.

**Highlights:** Sync projects with iCloud Drive, Cross-platform iOS/iPadOS/macOS support, Import/export all 4 tracks, Export stereo files for sharing, Preview projects with 4-track playback, USB project import/export

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $29.99 | per year |
| Lifetime Purchase | $79.99 | one-time |


### Yarn Unit Converter

[App page](https://appshunter.io/ios/app/yarn-unit-converter/id6756801049)

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

**In-app purchases:** none


## Frequently asked questions

### Is Manager for OP1 free?

Manager for OP1 is free to download, with in-app purchases available.

### Is Yarn Unit Converter free?

Yarn Unit Converter is free to download, with no in-app purchases.

### Do Manager for OP1 or Yarn Unit Converter have ads?

Yarn Unit Converter shows ads; Manager for OP1 does not.

### Which is updated more often, Manager for OP1 or Yarn Unit Converter?

Manager for OP1 ships an update every 4 months, and Yarn Unit Converter every 2 days. Most recently, Manager for OP1 was updated on October 22, 2026 and Yarn Unit Converter on October 6, 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.*