Probability Distribution vs Combinatorics Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Probability Distribution
This app allows users to calculate probabilities and visualize various continuous and discrete probability distributions. It supports a wide range of common distributions and plans to add more in the future.
- Calculate probabilities
- Visualize distributions
- Normal (Gaussian) distribution
- Binomial distribution
- Poisson distribution
- Exponential distribution
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Calculate probabilities and visualize probability distributions. Supported continuous probability distributions: - Normal (Gaussian) - t (Student's t) - Chi-Squared - F - Exponential - Gamma - Beta - Log-normal Supported discrete probability distributions: - Binomial - Poisson - Pascal - Geometric - Hypergeometric and more are coming.
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 – 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
Verdict
Probability Distribution and Combinatorics Calculator are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Probability Distribution sells 1 one-off in-app purchase and Combinatorics Calculator sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Probability Distribution ships an update every 2 weeks, Combinatorics Calculator every 3 weeks. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.
| Parameter | Probability Distribution | Combinatorics Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (17 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 180 MB |
| Age rating | 4+ | 4+ |
| Developer | Madiyar Aitbayev | Glindemann, Sennoun, Langer GbR |
In-app purchases
Probability Distribution
- Unlock All Distributions$2.99
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 Distribution free?
Is Combinatorics Calculator free?
Do Probability Distribution or Combinatorics Calculator have ads?
Which is updated more often, Probability Distribution or Combinatorics Calculator?
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