# Odyma vs Zetamac Arithmetic Practice

The clearest difference is update cadence: Zetamac Arithmetic Practice at daily against Odyma's every 5 weeks. Odyma's advantage is iOS requirement (12.0 vs 17.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Odyma ships an update every 5 weeks, Zetamac Arithmetic Practice daily. The most recent releases landed on September 9, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Odyma | Zetamac Arithmetic Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (18 ratings)](https://appshunter.io/ios/app/zetamac-arithmetic-practice/id6737153617/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 82.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Daily** |
| Monetization | — | Free |
| Size | 59 MB | 1 MB |
| Requires iOS | **12.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Coding Minds, Inc.](https://appshunter.io/developer/1480612283) | [Joseph Ma](https://appshunter.io/developer/1774979062) |

## What reviewers say

### Odyma

[App page](https://appshunter.io/ios/app/odyma/id6474064463)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zetamac Arithmetic Practice

[App page](https://appshunter.io/ios/app/zetamac-arithmetic-practice/id6737153617)

This app offers mental math practice tailored for quantitative finance professionals. It focuses on improving calculation speed and accuracy for complex numerical problems.

**Highlights:** Mental math practice, Quantitative finance focus, Calculation speed improvement, Accuracy enhancement, Numerical problem solving

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

**In-app purchases:** none


## Frequently asked questions

### Is Odyma free?

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

### Is Zetamac Arithmetic Practice free?

Zetamac Arithmetic Practice is free to download, with no in-app purchases.

### Do Odyma or Zetamac Arithmetic Practice have ads?

Neither Odyma nor Zetamac Arithmetic Practice shows ads.

### Which is updated more often, Odyma or Zetamac Arithmetic Practice?

Odyma ships an update every 5 weeks, and Zetamac Arithmetic Practice daily. Most recently, Odyma was updated on September 9, 2026 and Zetamac Arithmetic Practice on September 27, 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.*