# 百Math vs Math Grid Calculation Training

The clearest difference is in-app purchases: 百Math at none against Math Grid Calculation Training's 1. 百Math also leads on update cadence (every 9 days vs every 2 months). Math Grid Calculation Training's advantage is iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Math Grid Calculation Training sells 1 one-off in-app purchase. 百Math asks for nothing beyond the download.

百Math ships an update every 9 days, Math Grid Calculation Training every 2 months. The most recent releases landed on October 18, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 百Math | Math Grid Calculation Training |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 18 MB | 96 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [naoya saito](https://appshunter.io/developer/1576521641) | [Masaki Kanno](https://appshunter.io/developer/843112443) |

## 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 Grid Calculation Training

[App page](https://appshunter.io/ios/app/math-grid-calculation-training/id6769310340)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is 百Math free?

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

### Is Math Grid Calculation Training free?

Math Grid Calculation Training is free to download, with in-app purchases available.

### Do 百Math or Math Grid Calculation Training have ads?

Both 百Math and Math Grid Calculation Training show ads.

### Which is updated more often, 百Math or Math Grid Calculation Training?

百Math ships an update every 9 days, and Math Grid Calculation Training every 2 months. Most recently, 百Math was updated on October 18, 2026 and Math Grid Calculation Training on October 28, 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.*