# Logic Puzzle Library vs Postbot Mosaic

The clearest difference is in-app purchases: Logic Puzzle Library at none against Postbot Mosaic's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Postbot Mosaic sells 10 one-off in-app purchases. Logic Puzzle Library asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 13, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Logic Puzzle Library | Postbot Mosaic |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | Weekly |
| Size | 31 MB | 180 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gyuhyeon Jeon](https://appshunter.io/developer/353770805) | [DuoBay Games](https://appshunter.io/developer/6802014707) |

## What reviewers say

### Logic Puzzle Library

[App page](https://appshunter.io/ios/app/logic-puzzle-library/id6810102838)

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

**In-app purchases:** none


### Postbot Mosaic

[App page](https://appshunter.io/ios/app/postbot-mosaic/id6811335477)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1,000 Coins | $1.99 | one-time |
| Remove Automatic Ads | $4.99 | one-time |
| Remove Auto Ads Bundle | $7.99 | one-time |
| 5,000 Coins | $7.99 | one-time |
| Starter Supply Bundle | $9.99 | one-time |
| 10,000 Coins | $14.99 | one-time |
| Standard Supply Bundle | $19.99 | one-time |
| 25,000 Coins | $29.99 | one-time |
| 50,000 Coins | $49.99 | one-time |
| 100,000 Coins | $99.99 | one-time |


## Frequently asked questions

### Is Logic Puzzle Library free?

Logic Puzzle Library is free to download, with no in-app purchases.

### Is Postbot Mosaic free?

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

### Do Logic Puzzle Library or Postbot Mosaic have ads?

Both Logic Puzzle Library and Postbot Mosaic show ads.

### Which is updated more often, Logic Puzzle Library or Postbot Mosaic?

Logic Puzzle Library ships an update weekly, and Postbot Mosaic weekly. Most recently, Logic Puzzle Library was updated on November 13, 2026 and Postbot Mosaic on November 6, 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.*