# Number Playtime vs Math Defender

The clearest difference is update cadence: Math Defender at weekly against Number Playtime's every 11 months. Math Defender also leads on iOS requirement (13.0 vs 15.0). 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.

Number Playtime ships an update every 11 months, Math Defender weekly. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Number Playtime | Math Defender |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 11 months | **Weekly** |
| Size | 28 MB | 143 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [北京宠光科技有限公司](https://appshunter.io/developer/1633375342) | [LUN SHIH WANG](https://appshunter.io/developer/1853564316) |

## What reviewers say

### Number Playtime

[App page](https://appshunter.io/ios/app/number-playtime/id6502514873)

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

**In-app purchases:** none


### Math Defender

[App page](https://appshunter.io/ios/app/math-defender-magic-defense/id6758081512)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Number Playtime free?

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

### Is Math Defender free?

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

### Do Number Playtime or Math Defender have ads?

Both Number Playtime and Math Defender show ads.

### Which is updated more often, Number Playtime or Math Defender?

Number Playtime ships an update every 11 months, and Math Defender weekly. Most recently, Number Playtime was updated on October 25, 2026 and Math Defender on October 13, 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.*