# Counting and Probability vs Zetamac Arithmetic Practice

The clearest difference is update cadence: Zetamac Arithmetic Practice at daily against Counting and Probability's every 8 months. Counting and Probability's advantage is rating (5.0 vs 4.7) and iOS requirement (13.0 vs 17.5). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Counting and Probability holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 7 and 18 respectively.

Counting and Probability ships an update every 8 months, Zetamac Arithmetic Practice daily. The most recent releases landed on June 1, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Counting and Probability | Zetamac Arithmetic Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/counting-and-probability/id6444738269/reviews)** | [4.7 (18 ratings)](https://appshunter.io/ios/app/zetamac-arithmetic-practice/id6737153617/reviews) |
| Number of ratings | 7 | **18** |
| Positive reviews | — | 82.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Daily** |
| Monetization | Free | Free |
| Size | 8 MB | 1 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DEEPPATH LLC](https://appshunter.io/developer/1531915855) | [Joseph Ma](https://appshunter.io/developer/1774979062) |

## What reviewers say

### Counting and Probability

[App page](https://appshunter.io/ios/app/counting-and-probability/id6444738269)

Access a curated collection of math competition problems focused on counting and probability. This app provides detailed solutions, bookmarking features for review, and note-taking capabilities to aid your study.

**Highlights:** Math competition problem collection, Detailed solutions provided, Bookmark problems for review, Note-taking for study, Organized problem collection

**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 Counting and Probability free?

Counting and Probability 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.

### Which has better reviews, Counting and Probability or Zetamac Arithmetic Practice?

Counting and Probability is rated higher. Counting and Probability averages 5.0 out of 5 from 7 ratings, while Zetamac Arithmetic Practice averages 4.7 from 18 ratings.

### Do Counting and Probability or Zetamac Arithmetic Practice have ads?

Neither Counting and Probability nor Zetamac Arithmetic Practice shows ads.

### Which is updated more often, Counting and Probability or Zetamac Arithmetic Practice?

Counting and Probability ships an update every 8 months, and Zetamac Arithmetic Practice daily. Most recently, Counting and Probability was updated on June 1, 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.*