# 123 genius basic addition cool math games vs mkZero

The clearest difference is in-app purchases: 123 genius basic addition cool math games at none against mkZero's 9. 123 genius basic addition cool math games also leads on ads (none vs shown) and iOS requirement (9.0 vs 12.2). On price, update cadence and device support there is nothing between them.

Both are free to download. mkZero sells 9 one-off in-app purchases. 123 genius basic addition cool math games asks for nothing beyond the download.

123 genius basic addition cool math games ships an update every 3 weeks, mkZero every 5 weeks. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 123 genius basic addition cool math games | mkZero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Size | 17 MB | 13 MB |
| Requires iOS | **9.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Wattana Kamdee](https://appshunter.io/developer/1202552658) | [GameJab OÜ](https://appshunter.io/developer/1831019149) |

## What reviewers say

### 123 genius basic addition cool math games

[App page](https://appshunter.io/ios/app/123-genius-basic-addition-cool-math-games/id1206452228)

**Features:** macOS Compatibility

**In-app purchases:** none


### mkZero

[App page](https://appshunter.io/ios/app/mkzero-math-challenge/id6749543532)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads For 3 Days | $0.29 | one-time |
| 20 Lives | $0.99 | one-time |
| 50 Lives | $1.99 | one-time |
| 100 Lives | $3.99 | one-time |
| Remove Ads | $4.99 | one-time |
| 300 Lives | $9.99 | one-time |
| 500 Lives | $14.99 | one-time |
| 1,000 lives! | $24.99 | one-time |
| Infinite Lives | $99.99 | one-time |


## Frequently asked questions

### Is 123 genius basic addition cool math games free?

123 genius basic addition cool math games is free to download, with no in-app purchases.

### Is mkZero free?

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

### Do 123 genius basic addition cool math games or mkZero have ads?

mkZero shows ads; 123 genius basic addition cool math games does not.

### Which is updated more often, 123 genius basic addition cool math games or mkZero?

123 genius basic addition cool math games ships an update every 3 weeks, and mkZero every 5 weeks. Most recently, 123 genius basic addition cool math games was updated on October 11, 2026 and mkZero on October 7, 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.*