# Discrete Probability vs VimKata

The clearest difference is in-app purchases: Discrete Probability at none against VimKata's 1. Discrete Probability also leads on update cadence (every 4 days vs fortnightly). VimKata'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. VimKata sells 1 one-off in-app purchase. Discrete Probability asks for nothing beyond the download.

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

Discrete Probability ships an update every 4 days, VimKata fortnightly. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Discrete Probability | VimKata |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/discrete-probability/id6752967885/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/vimkata-learn-vim-visually/id6759241557/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | **Free** | Freemium |
| Size | 9 MB | 23 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuri Morozov](https://appshunter.io/developer/1582368813) | [Andrii Zborovskyi](https://appshunter.io/developer/649204749) |

## What reviewers say

### 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


### VimKata

[App page](https://appshunter.io/ios/app/vimkata-learn-vim-visually/id6759241557)

Learn the Vim text editor through interactive visual demonstrations and practice exercises. Build muscle memory with on-screen keyboard simulations and apply concepts to real code. Progress through levels of increasing complexity, from basic motions to advanced text editing.

**Highlights:** Visual command demonstrations, On-screen keyboard practice, Real code examples (JavaScript, Python, etc.), Scored exercises with optimal solutions, 7 levels with 135 exercises, Bookmarkable practice queue

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Levels | $4.99 | one-time |


## Frequently asked questions

### Is Discrete Probability free?

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

### Is VimKata free?

VimKata is free to download, with in-app purchases available.

### Which has better reviews, Discrete Probability or VimKata?

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

### Do Discrete Probability or VimKata have ads?

Neither Discrete Probability nor VimKata shows ads.

### Which is updated more often, Discrete Probability or VimKata?

Discrete Probability ships an update every 4 days, and VimKata fortnightly. Most recently, Discrete Probability was updated on September 28, 2026 and VimKata on October 5, 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.*