# Arithmetic King vs Math Duel

The clearest difference is in-app purchases: Arithmetic King at none against Math Duel's 6. Arithmetic King also leads on ads (none vs shown) and iOS requirement (11.0 vs 13.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Math Duel sells 6 one-off in-app purchases. Arithmetic King asks for nothing beyond the download.

Arithmetic King ships an update every 3 weeks, Math Duel fortnightly. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Arithmetic King | Math Duel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 48 MB | 53 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杰超 杨](https://appshunter.io/developer/1364053114) | [HAO CHANG KUO](https://appshunter.io/developer/1735524069) |

## What reviewers say

### Arithmetic King

[App page](https://appshunter.io/ios/app/arithmetic-king/id1589684255)

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

**In-app purchases:** none


### Math Duel

[App page](https://appshunter.io/ios/app/math-duel-mental-math-battle/id6770234325)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Energy Potion Pack | $0.99 | one-time |
| Basic Tool Pack | $0.99 | one-time |
| Advanced Pass Upgrade | $0.99 | one-time |
| Starter Pack | $1.99 | one-time |
| Standard Pass | $2.99 | one-time |
| Advanced Pass | $3.99 | one-time |


## Frequently asked questions

### Is Arithmetic King free?

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

### Is Math Duel free?

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

### Do Arithmetic King or Math Duel have ads?

Math Duel shows ads; Arithmetic King does not.

### Which is updated more often, Arithmetic King or Math Duel?

Arithmetic King ships an update every 3 weeks, and Math Duel fortnightly. Most recently, Arithmetic King was updated on October 8, 2026 and Math Duel on October 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.*