# Read19 vs Gemdoku

The clearest difference is in-app purchases: Gemdoku at none against Read19's 4. Gemdoku also leads on iOS requirement (15.0 vs 18.0). Read19's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Read19 sells 4 in-app purchases, starting at $6.99 per month. Gemdoku asks for nothing beyond the download.

Read19 ships an update every 2 days, Gemdoku daily. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Read19 | Gemdoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gemdoku-gem-logic-puzzle/id6806572383/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | **Daily** |
| Monetization | — | Ad-supported |
| Size | 16 MB | 129 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [思程 陈](https://appshunter.io/developer/6786794222) | [Lunar Apps](https://appshunter.io/developer/1796243791) |

## What reviewers say

### Read19

[App page](https://appshunter.io/ios/app/read19/id6799068030)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KataGo Review Plus | $6.99 | per month |
| 300K Visits | $1.99 | one-time |
| 1M Visits | $3.99 | one-time |
| 3M Visits | $9.99 | one-time |


### Gemdoku

[App page](https://appshunter.io/ios/app/gemdoku-gem-logic-puzzle/id6806572383)

A relaxing logic puzzle game where you place gems on a board, ensuring one per row, column, and color region without any touching. Offers daily challenges and leaderboards for a competitive yet calm experience.

**Highlights:** Pure deduction gameplay, Board sizes up to 10x10, In-game hints and tutorials, Daily challenges and leaderboards, Save progress mid-level, Customizable sound and haptics

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

**In-app purchases:** none


## Frequently asked questions

### Is Read19 free?

Read19 is free to download, with in-app purchases available.

### Is Gemdoku free?

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

### Do Read19 or Gemdoku have ads?

Gemdoku shows ads; Read19 does not.

### Which is updated more often, Read19 or Gemdoku?

Read19 ships an update every 2 days, and Gemdoku daily. Most recently, Read19 was updated on September 30, 2026 and Gemdoku on October 3, 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.*