Probability(Math Drills) vs Combinatorics Calculator
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Probability(Math Drills)
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You can learn Probability offline. Since the question generation and the correctness judgment of the answer are automatically performed, you can work on the drill learning as many times as you like. You can also see tips and answers. Score high in Challenge Mode to improve your rank!!
Combinatorics Calculator
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Finish your homework instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your values and calculate permutations, combinations, and variations β with and without repetition. HOW IT WORKS Enter your values in the correct fields and get started. Youβll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We donβt need it. Only anonymized data is collected, for example: - which features are used - how many solutions are generated This helps us improve. We cannot identify you. COSTS Everything is free to use. 24/7 access to your solutions. All solution steps are always complete. If you need many solutions in a short time, additional purchase options are available. EXTRAS - curated learning videos - feedback on incorrect inputs - manage your own solutions - app introduction CONTACT Questions or feedback via Discord or directly in the app review.
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Verdict
The clearest difference is in-app purchases: Probability(Math Drills) at none against Combinatorics Calculator's 8. Probability(Math Drills) also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Combinatorics Calculator sells 8 one-off in-app purchases. Probability(Math Drills) asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on August 4, 2026 and September 14, 2026 respectively.
| Parameter | Probability(Math Drills) | Combinatorics Calculator |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod β better |
| Requires iOS | 12.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 28 MB | 180 MB |
| Age rating | 4+ | 4+ |
| Developer | ι· η°ζ | Glindemann, Sennoun, Langer GbR |
In-app purchases
Probability(Math Drills)
No in-app purchases
Combinatorics Calculator
- +30 User Tokens$0.29
- +1 Convenience Token / 6h, max. +2$0.59
- +2 Convenience Tokens / 6h, max. +4$0.99
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- +150 User Tokens$0.99
- +300 User Tokens$1.49
- +4 Convenience Tokens / 6h, max. +8$1.59
- Lifetime Access$1.99
- Remove Ads$1.99
Questions
Is Probability(Math Drills) free?
Is Combinatorics Calculator free?
Do Probability(Math Drills) or Combinatorics Calculator have ads?
Which is updated more often, Probability(Math Drills) or Combinatorics Calculator?
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