# Counting and Probability vs Discrete Probability

The clearest difference is update cadence: Discrete Probability at every 4 days against Counting and Probability's every 8 months. Counting and Probability's advantage is iOS requirement (13.0 vs 16.6). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Counting and Probability against 5.0 for Discrete Probability. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

Counting and Probability ships an update every 8 months, Discrete Probability every 4 days. Both last shipped on October 13, 2026.

## The numbers

| Metric | Counting and Probability | Discrete Probability |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/counting-and-probability/id6444738269/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/discrete-probability/id6752967885/reviews) |
| Number of ratings | **7** | 3 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 8 MB | 9 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [DEEPPATH LLC](https://appshunter.io/developer/1531915855) | [Yuri Morozov](https://appshunter.io/developer/1582368813) |

## 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, Vision Pro support

**In-app purchases:** none


### Discrete Probability

[App page](https://appshunter.io/ios/app/discrete-probability/id6752967885)

This app provides a comprehensive tool for learning and calculating discrete probability distributions. It includes formulas with derivations, visual tools like histograms, and descriptions of optimized computation methods. It covers general concepts and several specific distributions.

**Highlights:** User-friendly calculator, Formulas with derivations, Exportable formulas (image/LaTeX), Optimized computation methods, Histograms and visual tools, General concepts and specific distributions

**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 Discrete Probability free?

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

### Which has better reviews, Counting and Probability or Discrete Probability?

Counting and Probability and Discrete Probability are both rated 5.0 out of 5 on the App Store, from 7 and 3 ratings respectively.

### Do Counting and Probability or Discrete Probability have ads?

Neither Counting and Probability nor Discrete Probability shows ads.

### Which is updated more often, Counting and Probability or Discrete Probability?

Counting and Probability ships an update every 8 months, and Discrete Probability every 4 days. Most recently, Counting and Probability was updated on October 13, 2026 and Discrete Probability on October 13, 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.*