# ３×３Ｄ Eye Training Premium vs EyeFlex

The clearest difference is price: EyeFlex at Free against ３×３Ｄ Eye Training Premium's $0.99. ３×３Ｄ Eye Training Premium's advantage is in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 9 months). On ads, device support and iOS requirement there is nothing between them.

EyeFlex is free to download; ３×３Ｄ Eye Training Premium costs $0.99 up front. EyeFlex sells 2 in-app purchases, starting at $34.99 per month. ３×３Ｄ Eye Training Premium asks for nothing beyond the download.

３×３Ｄ Eye Training Premium ships an update every 3 weeks, EyeFlex every 9 months. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | ３×３Ｄ Eye Training Premium | EyeFlex |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/eye-training-premium/id1474932096/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Monetization | Paid | — |
| Size | 51 MB | 475 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SHUUICHI WATANABE](https://appshunter.io/developer/999235573) | [URSA ALBA UAB](https://appshunter.io/developer/1769416525) |

## What reviewers say

### ３×３Ｄ Eye Training Premium

[App page](https://appshunter.io/ios/app/eye-training-premium/id1474932096)

Improve your vision with engaging 3D stereoscopic exercises designed to train both eye muscles and intracerebral visual acuity. Enjoy game-like training sessions that take just 3 minutes each, with a built-in tool to track your progress.

**Highlights:** 3D stereoscopic vision training, Eye muscle and brain training, Game-like exercises, Vision measurement tool, Short daily sessions (approx. 3 minutes)

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

**In-app purchases:** none


### EyeFlex

[App page](https://appshunter.io/ios/app/eyeflex/id6698895191)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Training Access | $34.99 | per month |
| Yearly Training Access | $379.00 | per year |


## Frequently asked questions

### Is ３×３Ｄ Eye Training Premium free?

３×３Ｄ Eye Training Premium costs $0.99, with no in-app purchases.

### Is EyeFlex free?

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

### Do ３×３Ｄ Eye Training Premium or EyeFlex have ads?

Neither ３×３Ｄ Eye Training Premium nor EyeFlex shows ads.

### Which is updated more often, ３×３Ｄ Eye Training Premium or EyeFlex?

３×３Ｄ Eye Training Premium ships an update every 3 weeks, and EyeFlex every 9 months. Most recently, ３×３Ｄ Eye Training Premium was updated on October 11, 2026 and EyeFlex on October 4, 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.*