Comparison

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.

Head to head
About

Probability(Math Drills)

Features
Read full description

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!!

About

Combinatorics Calculator

Features
Read full description

Finish your homework instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your values and calculate permutations, combinations, and variations – with and without repetition. HOW IT WORKS Enter your values in the correct fields and get started. You’ll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don’t 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.

Screenshots

Probability(Math Drills)4 screens
Combinatorics Calculator4 screens

Verdict

The call

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Combinatorics Calculator sells 8 one-off in-app purchases. Probability(Math Drills) asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on August 4, 2026 and September 14, 2026 respectively.

Scorecard2 real differences Β· 4 level
Probability(Math Drills) versus Combinatorics Calculator: the parameters behind the verdict, then further details
ParameterProbability(Math Drills)Combinatorics Calculator
PriceFreeFree
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS12.0 β€” better15.0
Further details β€” not scored
Size28 MB180 MB
Age rating4+4+
Developerιƒ· 田村Glindemann, Sennoun, Langer GbR

In-app purchases

None

Probability(Math Drills)

No in-app purchases

8 purchases

Combinatorics Calculator

One-time8
  • +30 User Tokens$0.29
  • +1 Convenience Token / 6h, max. +2$0.59
  • +2 Convenience Tokens / 6h, max. +4$0.99
Show 5 more
  • +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?
Probability(Math Drills) is free to download, with no in-app purchases.
Is Combinatorics Calculator free?
Combinatorics Calculator is free to download, with in-app purchases available.
Do Probability(Math Drills) or Combinatorics Calculator have ads?
Neither Probability(Math Drills) nor Combinatorics Calculator shows ads.
Which is updated more often, Probability(Math Drills) or Combinatorics Calculator?
Probability(Math Drills) ships an update every 3 weeks, and Combinatorics Calculator every 3 weeks. Most recently, Probability(Math Drills) was updated on August 4, 2026 and Combinatorics Calculator on September 14, 2026.

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