# Kani Math vs Zell

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

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

Kani Math ships an update every 4 days, Zell every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Kani Math | Zell |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Size | 16 MB | 80 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TaheelWeb](https://appshunter.io/developer/1820898256) | [NL sh.p.k.](https://appshunter.io/developer/1896766718) |

## 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 |


### Zell

[App page](https://appshunter.io/ios/app/zell/id6770904483)

**Features:** macOS Compatibility, 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 Zell free?

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

### Do Kani Math or Zell have ads?

Neither Kani Math nor Zell shows ads.

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

Kani Math ships an update every 4 days, and Zell every 2 months. Most recently, Kani Math was updated on October 24, 2026 and Zell on October 24, 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.*