# Project Chiron vs Zetamac Arithmetic Practice

The clearest difference is update cadence: Zetamac Arithmetic Practice at daily against Project Chiron's every 8 days. 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.

Project Chiron ships an update every 8 days, Zetamac Arithmetic Practice daily. Both last shipped on October 24, 2026.

## The numbers

| Metric | Project Chiron | Zetamac Arithmetic Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (19 ratings)](https://appshunter.io/ios/app/zetamac-arithmetic-practice/id6737153617/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | **Daily** |
| Monetization | — | Free |
| Size | 171 MB | 1 MB |
| Requires iOS | **16.0** | 17.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [James Booth](https://appshunter.io/developer/1745107348) | [Joseph Ma](https://appshunter.io/developer/1774979062) |

## What reviewers say

### Project Chiron

[App page](https://appshunter.io/ios/app/project-chiron/id6502346822)

**Features:** Vision Pro support

**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 Project Chiron free?

Project Chiron 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 Project Chiron or Zetamac Arithmetic Practice have ads?

Neither Project Chiron nor Zetamac Arithmetic Practice shows ads.

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

Project Chiron ships an update every 8 days, and Zetamac Arithmetic Practice daily. Most recently, Project Chiron was updated on October 24, 2026 and Zetamac Arithmetic Practice on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*