# Abacus Mental Maths vs AT

The clearest difference is in-app purchases: Abacus Mental Maths at none against AT's 2. Abacus Mental Maths also leads on iOS requirement (12.0 vs 16.4). AT's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. AT sells 2 in-app purchases, starting at $1.99 per 7 days. Abacus Mental Maths asks for nothing beyond the download.

## The numbers

| Metric | Abacus Mental Maths | AT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | — |
| Size | 56 MB | 62 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Blue Castle Studios](https://appshunter.io/developer/1465237858) | [Maksym Bezruchko](https://appshunter.io/developer/1884307829) |

## What reviewers say

### Abacus Mental Maths

[App page](https://appshunter.io/ios/app/abacus-mental-maths/id6451128513)

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

**In-app purchases:** none


### AT

[App page](https://appshunter.io/ios/app/at-sat-prep-2026/id6785216997)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $1.99 | per 7 days |
| Monthly subscription | $4.99 | per month |


## Frequently asked questions

### Is Abacus Mental Maths free?

Abacus Mental Maths is free to download, with no in-app purchases.

### Is AT free?

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

### Do Abacus Mental Maths or AT have ads?

Abacus Mental Maths shows ads; AT does not.

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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.*