# Fast100Math vs 9

The clearest difference is in-app purchases: Fast100Math at none against 9's 1. Fast100Math also leads on ads (none vs shown) and update cadence (every 3 days vs every 5 weeks). 9's advantage is iOS requirement (14.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. 9 sells 1 one-off in-app purchase. Fast100Math asks for nothing beyond the download.

Fast100Math ships an update every 3 days, 9 every 5 weeks. The most recent releases landed on October 14, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Fast100Math | 9 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 5 weeks |
| Size | 31 MB | 26 MB |
| Requires iOS | 18.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [makoto amijima](https://appshunter.io/developer/1493994946) | [Okko Meijer](https://appshunter.io/developer/1881299592) |

## What reviewers say

### Fast100Math

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 9

[App page](https://appshunter.io/ios/app/9-box/id6761386274)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Verwijder advertenties | $2.99 | one-time |


## Frequently asked questions

### Is Fast100Math free?

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

### Is 9 free?

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

### Do Fast100Math or 9 have ads?

9 shows ads; Fast100Math does not.

### Which is updated more often, Fast100Math or 9?

Fast100Math ships an update every 3 days, and 9 every 5 weeks. Most recently, Fast100Math was updated on October 14, 2026 and 9 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.*