# Cullen Chart Digital vs Gameblyo

The clearest difference is update cadence: Gameblyo at every 2 months against Cullen Chart Digital's every 5 months. Cullen Chart Digital's advantage is iOS requirement (13.0 vs 15.1). 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.

Cullen Chart Digital ships an update every 5 months, Gameblyo every 2 months. The most recent releases landed on October 10, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Cullen Chart Digital | Gameblyo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/gameblyo/id6470238554/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 32 MB | 38 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mark Hughes](https://appshunter.io/developer/1709775356) | [Aliaksei Harakh](https://appshunter.io/developer/1713233026) |

## What reviewers say

### Cullen Chart Digital

[App page](https://appshunter.io/ios/app/cullen-chart-digital/id1593614277)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gameblyo

[App page](https://appshunter.io/ios/app/gameblyo/id6470238554)

This application offers vision therapy for amblyopia using engaging games. It aims to improve visual acuity in children with amblyopia through daily sessions, tracking progress and providing personalized settings for effective treatment.

**Highlights:** Amblyopia vision therapy, Engaging treatment games, Progress tracking and statistics, Personalized settings, Expert recommendations, Red-blue glasses compatible

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cullen Chart Digital free?

Cullen Chart Digital is free to download, with no in-app purchases.

### Is Gameblyo free?

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

### Do Cullen Chart Digital or Gameblyo have ads?

Neither Cullen Chart Digital nor Gameblyo shows ads.

### Which is updated more often, Cullen Chart Digital or Gameblyo?

Cullen Chart Digital ships an update every 5 months, and Gameblyo every 2 months. Most recently, Cullen Chart Digital was updated on October 10, 2026 and Gameblyo on September 22, 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.*