# Number Chomp vs Prime Not Prime

Number Chomp and Prime Not Prime both sit at 4.4 stars, but that hides the real split: 100% of Prime Not Prime's written reviews are positive against 76% of Number Chomp's. Number Chomp's advantage is ratings volume (426 vs 6) and device support (3 vs 1). On price, rating, update cadence 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 — 4.4 for Number Chomp against 4.3 for Prime Not Prime. That said, the two scores are not equally well evidenced: Number Chomp has 426 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 76% of Number Chomp's written reviews are positive against 100% of Prime Not Prime's.

Number Chomp ships an update every 5 weeks, Prime Not Prime monthly. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Number Chomp | Prime Not Prime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (426 ratings)](https://appshunter.io/ios/app/number-chomp/id1501996441/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/prime-not-prime/id6738664674/reviews) |
| Number of ratings | **426** | 6 |
| Positive reviews | 76.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 22 MB | 15 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Sedam](https://appshunter.io/developer/541745010) | [Richard Witherspoon](https://appshunter.io/developer/1690898003) |

## What reviewers say

### Number Chomp

[App page](https://appshunter.io/ios/app/number-chomp/id1501996441)

Engage in a fun math practice game where you guide a character through numbers and equations to find correct answers. Master addition, subtraction, multiplication, division, and pre-algebra while avoiding obstacles. Earn points by solving problems and advancing through levels.

**Highlights:** Math skill practice, Addition, subtraction, multiplication, division, Pre-algebra concepts, Score-based gameplay, Obstacle avoidance, Level progression

**In-app purchases:** none

**What reviewers like**

- 👍 Great for learning math
- 💡 Fun challenge level
- 👍 Customizable math type and difficulty
- 👍 Shows equations clearly
- 👍 Good for adult learners

**What reviewers complain about**

- 😴 Boring gameplay
- 🤔 Difficulty spikes (subtraction level 1)
- 🤷 Gets stuck on levels

**Reported bugs**

- 🐛 Window sizing and zoom issues on Mac
- 🐛 Game opens too big and off-screen on Mac

**Requested features**

- Add sound effects
- Add background music
- More lives
- Fix window sizing and zoom on Mac


### 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


## Frequently asked questions

### Is Number Chomp free?

Number Chomp is free to download, with no in-app purchases.

### Is Prime Not Prime free?

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

### Which has better reviews, Number Chomp or Prime Not Prime?

Number Chomp is rated higher. Number Chomp averages 4.4 out of 5 from 426 ratings, while Prime Not Prime averages 4.3 from 6 ratings.

### Do Number Chomp or Prime Not Prime have ads?

Neither Number Chomp nor Prime Not Prime shows ads.

### Which is updated more often, Number Chomp or Prime Not Prime?

Number Chomp ships an update every 5 weeks, and Prime Not Prime monthly. Most recently, Number Chomp was updated on October 27, 2026 and Prime Not Prime on October 30, 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.*