# 3 x 7 Puzzle vs Math

The clearest difference is in-app purchases: Math at none against 3 x 7 Puzzle's 1. Math also leads on update cadence (every 2 weeks vs every 7 months) and iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. 3 x 7 Puzzle sells 1 one-off in-app purchase. Math asks for nothing beyond the download.

3 x 7 Puzzle ships an update every 7 months, Math every 2 weeks. The most recent releases landed on October 5, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 3 x 7 Puzzle | Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Size | 12 MB | 9 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [Evgeny Lisin](https://appshunter.io/developer/628448131) |

## What reviewers say

### 3 x 7 Puzzle

[App page](https://appshunter.io/ios/app/3-x-7-puzzle/id1488937658)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertising | $1.99 | one-time |


### Math

[App page](https://appshunter.io/ios/app/math-plus/id6503189813)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3 x 7 Puzzle free?

3 x 7 Puzzle is free to download, with in-app purchases available.

### Is Math free?

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

### Do 3 x 7 Puzzle or Math have ads?

Neither 3 x 7 Puzzle nor Math shows ads.

### Which is updated more often, 3 x 7 Puzzle or Math?

3 x 7 Puzzle ships an update every 7 months, and Math every 2 weeks. Most recently, 3 x 7 Puzzle was updated on October 5, 2026 and Math on October 25, 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.*