# 百Math vs Math Rivals

The clearest difference is in-app purchases: 百Math at none against Math Rivals's 2. 百Math also leads on update cadence (every 9 days vs every 3 weeks). Math Rivals's advantage is ads (none vs shown) and iOS requirement (17.0 vs 26.0). On price and device support there is nothing between them.

Both are free to download. Math Rivals sells 2 in-app purchases, starting at $0.99 per month. 百Math asks for nothing beyond the download.

百Math ships an update every 9 days, Math Rivals every 3 weeks. The most recent releases landed on October 18, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 百Math | Math Rivals |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Ad-supported | — |
| Size | 18 MB | 3 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [naoya saito](https://appshunter.io/developer/1576521641) | [Michael McGill apps llc](https://appshunter.io/developer/1874084552) |

## What reviewers say

### 百Math

[App page](https://appshunter.io/ios/app/math-calculation-app/id1576521639)

This app helps users improve their mental arithmetic skills through a 100-problem calculation trainer. It offers various modes, progress tracking, and a global leaderboard to encourage practice and competition. A clean design and home screen widget provide convenient access.

**Highlights:** 100-problem calculation trainer, Addition, Subtraction, Multiplication, Division modes, Progress tracking (streak, average time, charts), Global ranking system, Distraction-free design, Home screen widget

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

**In-app purchases:** none


### Math Rivals

[App page](https://appshunter.io/ios/app/math-rivals-kids-brain-game/id6760370723)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Annual Premium | $4.99 | per year |


## Frequently asked questions

### Is 百Math free?

百Math is free to download, with no in-app purchases.

### Is Math Rivals free?

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

### Do 百Math or Math Rivals have ads?

百Math shows ads; Math Rivals does not.

### Which is updated more often, 百Math or Math Rivals?

百Math ships an update every 9 days, and Math Rivals every 3 weeks. Most recently, 百Math was updated on October 18, 2026 and Math Rivals 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.*