# Prime Not Prime vs Python Flashcards Mastery

The clearest difference is review sentiment: Prime Not Prime at 100% against Python Flashcards Mastery's 50%. Prime Not Prime also leads on in-app purchases (none vs 1) and ads (none vs shown). Python Flashcards Mastery's advantage is update cadence (every 5 days vs monthly) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Python Flashcards Mastery sells 1 one-off in-app purchase. Prime Not Prime asks for nothing beyond the download.

Prime Not Prime ships an update monthly, Python Flashcards Mastery every 5 days. The most recent releases landed on September 8, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Prime Not Prime | Python Flashcards Mastery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/prime-not-prime/id6738664674/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 45 MB |
| Requires iOS | 17.0 | **14.0.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Richard Witherspoon](https://appshunter.io/developer/1690898003) | [Mustard Seed Apps LLC](https://appshunter.io/developer/1821278498) |

## What reviewers say

### Prime Not Prime

[App page](https://appshunter.io/ios/app/prime-not-prime/id6738664674)

A fast-paced game that combines number recognition with a swiping mechanic. Players swipe right for prime numbers and left for non-primes, aiming to build long streaks. It's designed to be both educational and entertaining, with leaderboards for competitive play.

**Highlights:** Addictive swiping gameplay, Test prime number knowledge, Build streaks and complete challenges, Global leaderboards, Vibrant visuals and animations

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

**In-app purchases:** none


### Python Flashcards Mastery

[App page](https://appshunter.io/ios/app/python-flashcards-mastery/id6747405408)

Master Python concepts with 1000 flashcards covering essential topics from basics to advanced features. Track your learning progress with detailed statistics and study offline anywhere.

**Highlights:** 1000 Python flashcards, 9 essential categories, Progress tracking, Offline access, Beginner to advanced topics, User-friendly design

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full Version | $19.99 | one-time |


## Frequently asked questions

### Is Prime Not Prime free?

Prime Not Prime is free to download, with no in-app purchases.

### Is Python Flashcards Mastery free?

Python Flashcards Mastery is free to download, with in-app purchases available.

### Do Prime Not Prime or Python Flashcards Mastery have ads?

Python Flashcards Mastery shows ads; Prime Not Prime does not.

### Which is updated more often, Prime Not Prime or Python Flashcards Mastery?

Prime Not Prime ships an update monthly, and Python Flashcards Mastery every 5 days. Most recently, Prime Not Prime was updated on September 8, 2026 and Python Flashcards Mastery on June 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.*