Primes vs Nuddle
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Primes
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Have fun with prime numbers, 2 different ways to play, 3 levels of complexity each. The goal is to make the sum of every row and column be a prime number. Roll The Prime This is a game where you need lots of luck and some skill. Place randomly generated numbers on the grid, make the sum of every row and column be a prime number. Even with superb skills, your chance of successfully completing the game is less than 25%. Puzzle Primes This is a game of skill and mental math. Swap numbers on the grid to make the sum of every row and column a prime number, it may take you 5 moves or 15 moves but every puzzle has a solution.
Nuddle
Engage your mind with daily number sequence puzzles. Discover the underlying system to find the missing digits and build your solving streak. Enjoy unlimited random puzzles and share challenges with friends.
- Daily global number puzzles
- Infinite random sequences
- Streak building system
- Local puzzle caching
- Share puzzles with friends
- Recognize number systems
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Solve number sequences and daily number puzzles in short, focused brain breaks. Spot patterns in number sequences, solve the Daily Nuddle, and keep your streak alive. When you want more, jump into quick mental-math rounds, pattern sprints, memory challenges, Code Recall, and Number Matrix. Nuddle is not a traditional exam-prep app. But if you want training for MedAT or other admission tests on the go, it can help you practice faster pattern recognition, focused number work, and memory in short sessions. Each puzzle is short enough for any spare moment, but clever enough to feel satisfying when the rule clicks. No long instructions, no puzzle clutter: Nuddle shows you numbers, you find the system. What you get: - Logic: Sequences, Sequence Challenge, Number Matrix, Emoji Equations, Dice Fold - Speed: Quick Math, Pattern Sprint, Number Rush, Odd One Out, True or False, Path to Target, Gravity Shift - Memory: Target Recall, Code Recall, Count Recall, Path Recall, Match Math - Casual: Four in a Row, Tower of Hanoi, Merge, Nonogram - Admission-test training on the go - Local progress, streaks, and best scores - Light and dark design - Offline play whenever you want a quick brain break Nuddle is for anyone who likes number puzzles, logic games, mental math, patterns, and small daily challenges. Download Nuddle and find the next two numbers. Nuddle is free to download and includes the Daily Nuddle plus selected game modes at no cost. Nuddle Plus is available as an optional auto-renewable monthly or yearly subscription and unlocks all game modes while the subscription is active. Nuddle contains no ads. Payment is charged to your store account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your store account settings. You can try every locked game mode once for free before subscribing. Terms of Use (EULA): https://nuddle.schmutweiss.com/terms Privacy Policy: https://nuddle.schmutweiss.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Primes at none against Nuddle's 1. Primes also leads on iOS requirement (8.0 vs 13.0). Nuddle's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Nuddle sells 1 one-off in-app purchase. Primes asks for nothing beyond the download.
Primes ships an update every 2 months, Nuddle weekly. The most recent releases landed on September 16, 2026 and September 14, 2026 respectively.
| Parameter | Primes | Nuddle |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (8 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 8 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 34 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleniq Inc. | SCHMUT WEISS GmbH |
In-app purchases
Primes
No in-app purchases
Nuddle
- Remove ads$4.99









