# Kani Math vs Abacus

The clearest difference is in-app purchases: Abacus at none against Kani Math's 2. Kani Math's advantage is ads (none vs shown) and update cadence (every 4 days vs every 10 days). On price and device support there is nothing between them.

Both are free to download. Kani Math sells 2 in-app purchases, starting at $5.99 per month. Abacus asks for nothing beyond the download.

Kani Math ships an update every 4 days, Abacus every 10 days. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Kani Math | Abacus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 10 days |
| Size | 16 MB | 19 MB |
| Requires iOS | **16.0** | 26 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [TaheelWeb](https://appshunter.io/developer/1820898256) | [Aleksandr Govorukhin](https://appshunter.io/developer/1729392672) |

## What reviewers say

### Kani Math

[App page](https://appshunter.io/ios/app/kani-math-abacus-mental-math/id6770558250)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kani Math Premium — Monthly | $5.99 | per month |
| Kani Math Premium — Yearly | $49.99 | per year |


### Abacus

[App page](https://appshunter.io/ios/app/abacus-mental-arithmetic/id6819154039)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kani Math free?

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

### Is Abacus free?

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

### Do Kani Math or Abacus have ads?

Abacus shows ads; Kani Math does not.

### Which is updated more often, Kani Math or Abacus?

Kani Math ships an update every 4 days, and Abacus every 10 days. Most recently, Kani Math was updated on November 10, 2026 and Abacus on November 6, 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.*