# Flash Mental Math vs Абакус

The clearest difference is in-app purchases: Flash Mental Math at none against Абакус's 1. Flash Mental Math also leads on iOS requirement (15.6 vs 17.0). Абакус's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Абакус sells 1 in-app purchase, starting at $2.99 per month. Flash Mental Math asks for nothing beyond the download.

## The numbers

| Metric | Flash Mental Math | Абакус |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (20 ratings)](https://appshunter.io/ios/app/flash-mental-math-simple/id1547944841/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | — |
| Monetization | Ad-supported | — |
| Size | 14 MB | 2 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) | [Nikita Shlapatskiy](https://appshunter.io/developer/1617308322) |

## What reviewers say

### Flash Mental Math

[App page](https://appshunter.io/ios/app/flash-mental-math-simple/id1547944841)

Practice mental arithmetic with various difficulty levels and custom modes. This app serves as a brain training tool to enhance calculation skills.

**Highlights:** Mental arithmetic practice, Easy, normal, and difficult modes, Customizable modes, Brain training, Calculation skill improvement

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

**In-app purchases:** none


### Абакус

[App page](https://appshunter.io/ios/app/id6818455848)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Полный доступ на месяц | $2.99 | per month |


## Frequently asked questions

### Is Flash Mental Math free?

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

### Is Абакус free?

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

### Do Flash Mental Math or Абакус have ads?

Flash Mental Math shows ads; Абакус does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*