Probability Distribution vs Discrete Probability
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.
Discrete Probability
This app provides a comprehensive tool for learning and calculating discrete probability distributions. It includes formulas with derivations, visual tools like histograms, and descriptions of optimized computation methods. It covers general concepts and several specific distributions.
- User-friendly calculator
- Formulas with derivations
- Exportable formulas (image/LaTeX)
- Optimized computation methods
- Histograms and visual tools
- General concepts and specific distributions
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Everything you need to learn and compute discrete distributions — formulas, derivations, and visual tools, all in one app. In Discrete Probability app, everything is in one place: • User-friendly calculator • Formulas with rigorous yet easy-to-follow derivations — exportable as images or LaTeX • Descriptions of optimized computation methods when they differ from the standard formulas • Histograms and other essential visual tools Covered in the first version: • General concepts with definitions and derivations / proofs • Binomial distribution • Geometric distribution • Negative Binomial distribution • Hypergeometric distribution • Poisson distribution We welcome your feedback — write to graphmath@aol.com
Screenshots
Verdict
The clearest difference is rating: Discrete Probability at 5.0 against Probability Distribution's 4.5. Discrete Probability also leads on in-app purchases (none vs 1) and update cadence (every 4 days vs every 2 weeks). Probability Distribution's advantage is ratings volume (15 vs 3). On price, ads, device support and iOS requirement 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. Probability Distribution sells 1 one-off in-app purchase. Discrete Probability asks for nothing beyond the download.
Discrete Probability holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Probability Distribution has 15 ratings behind it against 3, so its average is the more settled of the two.
Probability Distribution ships an update every 2 weeks, Discrete Probability every 4 days. The most recent releases landed on September 9, 2026 and July 17, 2026 respectively.
| Parameter | Probability Distribution | Discrete Probability |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (15 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 15 — better | 3 |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 7 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Madiyar Aitbayev | Yuri Morozov |
Customer experience
Probability Distribution
Discrete Probability
In-app purchases
Probability Distribution
- Unlock All Distributions$2.99
Discrete Probability
No in-app purchases
Questions
Is Probability Distribution free?
Is Discrete Probability free?
Which has better reviews, Probability Distribution or Discrete Probability?
Do Probability Distribution or Discrete Probability have ads?
Which is updated more often, Probability Distribution or Discrete Probability?
Other comparisons
