# Probability-Distributions — user reviews > 70 indexed App Store user reviews of Probability by Matthew Bognar, rated 4.90/5 from 193 ratings. - Source: https://appshunter.io/ios/app/probability-distributions/id889106396/reviews - App overview in markdown: https://appshunter.io/ios/app/probability-distributions/id889106396.md - Rating breakdown: 5★ 187 · 4★ 0 · 3★ 2 · 2★ 0 · 1★ 4 ## What do users think of Probability? Overall sentiment: positive **Pros** - 👍 Easy to use interface - 📊 Great for probability distributions - 💡 Useful for checking work and homework - 💰 Free advanced functions - 📈 Visualizes data and distributions - 🚀 Quick calculations - 📚 Valuable educational tool - 💯 Accurate results **Cons** - 🚫 Not allowed on some exams - 🤔 Some users want more features **Most requested features** - Exam mode similar to Geogebra - Poisson distribution - Allow setting plot boundaries (e.g., for Beta distribution) - Make formulae available in offline mode - Clearly introduce parameters - Add options after graph rendering (area above, between, outside values) - Consistent terms for df across distributions ## Newest reviews (17 of 70) ### 5/5 — really useful app *2019-02-08* Love this app! Web app on hypothesis testing and confidence interval is even more useful, especially the version where raw data can be the input!! ### 5/5 — Nice exploratory tool *2018-12-12* Doesn’t try to do a lot, but what it does it does very well. Thank you for this app. (Future feature request, if you have time: Allow setting plot boundaries. e.g. for Beta, it’s sometimes illuminating to set the x bounds to (0,1).) ### 5/5 — Super handy tool and reference *2018-11-18* I’m a grad student and this has been a huge help for my stats class. It makes it easy to calculate probabilities using any distribution that I have needed. It got even better when I discovered that the app has easy links to formulas to calculate mean and variance for each distribution. ### 5/5 — Matt Bognar : The Man *2018-09-26, version 0.8* Sexiest App on the market ### 5/5 — Great for Stats *2018-09-26* Hope your heart pitter patters! Thanks for the app! No complaints ### 5/5 — Great app *2018-09-26* If you give anything but 5 stars you're gonna catch these hands ### 5/5 — Helps a lot! *2018-09-26, version 0.8* Love it ### 5/5 — Bognar is the man *2018-09-26* This app is super helpful and easy to use! ### 5/5 — so cute *2018-09-26, version 0.8* amazing app ### 5/5 — Bognar is a boss *2018-09-26, version 0.8* See above ### 5/5 — So great! *2018-09-26, version 0.8* Very helpful ☺️ ### 5/5 — Reliable and easy to use *2018-02-07* It's a great app, very easy to use and utilitarian. ### 5/5 — Bognar is the man *2018-02-07, version 0.7* Great app. Great guy. ### 5/5 — Great Educational Tool + Powerful Calculator *2018-02-07* Only gripe is Dr. Bognar won’t let his students (me) use this on his tests! Great work. ### 5/5 — Sexy devil *2018-02-07, version 0.7* 🔥🔥🔥 ### 5/5 — Binomial probability *2017-11-19, version 0.7* Great user interface and user experience in general ### 5/5 — Best App ever have *2017-10-18, version 0.7* It is the best App that I ever have ## Most critical reviews (10 lowest-rated) ### 1/5 — Wow just wow. *2020-12-31, version 0.9.2* I met my wife because of this app. Needless to say I’m not happy and it’s this apps fault. ### 3/5 — Good for education but needs improvement *2025-11-12* As a teacher I need exam mode such as Geogebra to use during exams ### 4/5 — very good, but new problem appeared in iphone se *2020-10-27* Now the app doesn't show if I'm using P(x >) or P(x <). It cuts off and only shows "P(." although it's not a huge problem since I can guess which option shows. I didn't have this problem in a previous version also. ### 5/5 — Finally! A simple, free N(0, 1) calculator. *2024-03-31* Subject line says it all. P(Z