# Cat Probability Roulette vs Glyph

The clearest difference is ads: Glyph at none against Cat Probability Roulette's shown. Glyph also leads on update cadence (every 3 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Cat Probability Roulette sells 1 one-off in-app purchase and Glyph sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Cat Probability Roulette ships an update every 2 months, Glyph every 3 days. The most recent releases landed on September 19, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Cat Probability Roulette | Glyph |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/glyph-learn-to-write/id6757951388/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 145 MB | 157 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yusuke Okada](https://appshunter.io/developer/1793725878) | [Patryk Bozek](https://appshunter.io/developer/1740514348) |

## What reviewers say

### Cat Probability Roulette

[App page](https://appshunter.io/ios/app/cat-probability-roulette/id6754866024)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.49 | one-time |


### Glyph

[App page](https://appshunter.io/ios/app/glyph-learn-to-write/id6757951388)

Learn to read and write diverse alphabets and scripts from around the world. This app focuses solely on character recognition and writing, offering interactive exercises and a smart repetition system to aid memorization. It's ideal for beginners looking to grasp new writing systems before diving into language learning.

**Highlights:** Learn exotic alphabets and writing systems, Focuses exclusively on writing, not language, Interactive drawing and character recognition exercises, Spaced repetition system (SRS) for retention, Track progress and earn XP, Offline learning mode

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Glyph Pro - Monthly | $2.99 | per month |
| Glyph Pro - Annual | $22.99 | per year |
| Glyph Pro | $59.99 | one-time |


## Frequently asked questions

### Is Cat Probability Roulette free?

Cat Probability Roulette is free to download, with in-app purchases available.

### Is Glyph free?

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

### Do Cat Probability Roulette or Glyph have ads?

Cat Probability Roulette shows ads; Glyph does not.

### Which is updated more often, Cat Probability Roulette or Glyph?

Cat Probability Roulette ships an update every 2 months, and Glyph every 3 days. Most recently, Cat Probability Roulette was updated on September 19, 2026 and Glyph on September 2, 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.*