# Fast100Math vs 電光石火

The clearest difference is update cadence: Fast100Math at every 3 days against 電光石火's every 2 weeks. 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.

Fast100Math ships an update every 3 days, 電光石火 every 2 weeks. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Fast100Math | 電光石火 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Size | 31 MB | 8 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [makoto amijima](https://appshunter.io/developer/1493994946) | [Yuta Koshizawa](https://appshunter.io/developer/990513991) |

## What reviewers say

### Fast100Math

[App page](https://appshunter.io/ios/app/fast100math/id6739807220)

**Features:** macOS Compatibility

**In-app purchases:** none


### 電光石火

[App page](https://appshunter.io/ios/app/id6743498354)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fast100Math free?

Fast100Math is free to download, with no in-app purchases.

### Is 電光石火 free?

電光石火 is free to download, with no in-app purchases.

### Do Fast100Math or 電光石火 have ads?

Neither Fast100Math nor 電光石火 shows ads.

### Which is updated more often, Fast100Math or 電光石火?

Fast100Math ships an update every 3 days, and 電光石火 every 2 weeks. Most recently, Fast100Math was updated on October 28, 2026 and 電光石火 on October 30, 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.*