# Fast100Math vs Shireka

The clearest difference is in-app purchases: Fast100Math at none against Shireka's 3. Fast100Math also leads on update cadence (every 3 days vs fortnightly) and iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Shireka sells 3 one-off in-app purchases. Fast100Math asks for nothing beyond the download.

Fast100Math ships an update every 3 days, Shireka fortnightly. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fast100Math | Shireka |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Size | 31 MB | 19 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [makoto amijima](https://appshunter.io/developer/1493994946) | [Yugo Sugiyama](https://appshunter.io/developer/1500223823) |

## What reviewers say

### Fast100Math

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Shireka

[App page](https://appshunter.io/ios/app/shireka/id6791211903)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Pack: Bronze | $0.49 | one-time |
| Support Pack: Silver | $5.99 | one-time |
| Support Pack: Gold | $59.99 | one-time |


## Frequently asked questions

### Is Fast100Math free?

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

### Is Shireka free?

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

### Do Fast100Math or Shireka have ads?

Neither Fast100Math nor Shireka shows ads.

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

Fast100Math ships an update every 3 days, and Shireka fortnightly. Most recently, Fast100Math was updated on October 14, 2026 and Shireka 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.*