# O vs PixTransfer

The clearest difference is update cadence: PixTransfer at every 5 weeks against O's every 18 months. O's advantage is iOS requirement (12.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

O ships an update every 18 months, PixTransfer every 5 weeks. The most recent releases landed on September 15, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | O | PixTransfer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 5 weeks** |
| Size | 16 MB | 66 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HUTCHINSON](https://appshunter.io/developer/862345826) | [Sahadevia](https://appshunter.io/developer/1591042616) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-ring-info/id1369062925)

**Features:** macOS Compatibility

**In-app purchases:** none


### PixTransfer

[App page](https://appshunter.io/ios/app/pixtransfer/id1591042614)

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

**In-app purchases:** none


## Frequently asked questions

### Is O free?

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

### Is PixTransfer free?

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

### Do O or PixTransfer have ads?

Neither O nor PixTransfer shows ads.

### Which is updated more often, O or PixTransfer?

O ships an update every 18 months, and PixTransfer every 5 weeks. Most recently, O was updated on September 15, 2026 and PixTransfer on September 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*