# Oxygen Iasi vs 321Start.run

The clearest difference is iOS requirement: 321Start.run at 13.0 against Oxygen Iasi's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Oxygen Iasi ships an update every 6 weeks, 321Start.run every 2 months. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Oxygen Iasi | 321Start.run |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Size | 63 MB | 7 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UPFIT SRL](https://appshunter.io/developer/1498932655) | [Eatble Technology S.R.L.](https://appshunter.io/developer/1589232452) |

## What reviewers say

### Oxygen Iasi

[App page](https://appshunter.io/ios/app/oxygen-iasi/id6479989134)

**In-app purchases:** none


### 321Start.run

[App page](https://appshunter.io/ios/app/321startrun/id6557074192)

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

**In-app purchases:** none


## Frequently asked questions

### Is Oxygen Iasi free?

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

### Is 321Start.run free?

321Start.run is free to download, with no in-app purchases.

### Do Oxygen Iasi or 321Start.run have ads?

Neither Oxygen Iasi nor 321Start.run shows ads.

### Which is updated more often, Oxygen Iasi or 321Start.run?

Oxygen Iasi ships an update every 6 weeks, and 321Start.run every 2 months. Most recently, Oxygen Iasi was updated on October 5, 2026 and 321Start.run on October 8, 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.*