# MATHTRA vs Abacus

The clearest difference is in-app purchases: MATHTRA at none against Abacus's 3. Abacus's advantage is ads (none vs shown) and update cadence (every 4 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Abacus sells 3 in-app purchases, starting at $1.99 per 7 days. MATHTRA asks for nothing beyond the download.

MATHTRA ships an update every 2 weeks, Abacus every 4 days. The most recent releases landed on October 12, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | MATHTRA | Abacus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Size | 5 MB | 33 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kentaro Seki](https://appshunter.io/developer/1412644397) | [Sahan Cava](https://appshunter.io/developer/1723739236) |

## What reviewers say

### MATHTRA

[App page](https://appshunter.io/ios/app/mathtra/id1412644398)

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

**In-app purchases:** none


### Abacus

[App page](https://appshunter.io/ios/app/abacus-math-for-kids/id6478469882)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |
| Monthly Subscription | $6.99 | per month |
| Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is MATHTRA free?

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

### Is Abacus free?

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

### Do MATHTRA or Abacus have ads?

MATHTRA shows ads; Abacus does not.

### Which is updated more often, MATHTRA or Abacus?

MATHTRA ships an update every 2 weeks, and Abacus every 4 days. Most recently, MATHTRA was updated on October 12, 2026 and Abacus on October 4, 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.*