# A3S vs FlashAnzan

The clearest difference is in-app purchases: A3S at none against FlashAnzan's 1. A3S also leads on iOS requirement (13.0 vs 18.0). FlashAnzan's advantage is update cadence (every 3 days vs every 2 weeks). On price, ads and device support there is nothing between them.

Both are free to download. FlashAnzan sells 1 one-off in-app purchase. A3S asks for nothing beyond the download.

A3S ships an update every 2 weeks, FlashAnzan every 3 days. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | A3S | FlashAnzan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 30 MB | 8 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Deccan Spark Technologies](https://appshunter.io/developer/1854388120) | [Haruhiko Kishi](https://appshunter.io/developer/942468714) |

## What reviewers say

### A3S

[App page](https://appshunter.io/ios/app/a3s-student/id6778335848)

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

**In-app purchases:** none


### FlashAnzan

[App page](https://appshunter.io/ios/app/flashanzan-mental-math/id6799545041)

**Features:** Family Sharing, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Grades | $3.99 | one-time |


## Frequently asked questions

### Is A3S free?

A3S is free to download, with no in-app purchases.

### Is FlashAnzan free?

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

### Do A3S or FlashAnzan have ads?

Neither A3S nor FlashAnzan shows ads.

### Which is updated more often, A3S or FlashAnzan?

A3S ships an update every 2 weeks, and FlashAnzan every 3 days. Most recently, A3S was updated on October 24, 2026 and FlashAnzan on October 27, 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.*