# O vs 3D Eye Booster

The clearest difference is price: O at Free against 3D Eye Booster's $0.99. O also leads on update cadence (every 2 weeks vs every 11 months). 3D Eye Booster's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.0). On ads and device support there is nothing between them.

O is free to download; 3D Eye Booster costs $0.99 up front. O sells 2 in-app purchases, starting at $2.99 per month. 3D Eye Booster asks for nothing beyond the download.

O ships an update every 2 weeks, 3D Eye Booster every 11 months. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | O | 3D Eye Booster |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 11 months |
| Size | 49 MB | 5 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Morson Japan](https://appshunter.io/developer/496417616) | [Masanori Katsuta](https://appshunter.io/developer/320172788) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-trainer/id6443540195)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン（１ヶ月） | $2.99 | per month |
| 広告を削除 | $2.99 | one-time |


### 3D Eye Booster

[App page](https://appshunter.io/ios/app/3d-eye-booster/id6449176653)

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

**In-app purchases:** none


## Frequently asked questions

### Is O free?

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

### Is 3D Eye Booster free?

3D Eye Booster costs $0.99, with no in-app purchases.

### Do O or 3D Eye Booster have ads?

Neither O nor 3D Eye Booster shows ads.

### Which is updated more often, O or 3D Eye Booster?

O ships an update every 2 weeks, and 3D Eye Booster every 11 months. Most recently, O was updated on October 14, 2026 and 3D Eye Booster on October 9, 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.*