# IntroStat - Statistics Solver — user reviews > 13 indexed App Store user reviews of IntroStat by Zhiyi Zhang, rated 4.92/5 from 24 ratings. - Source: https://appshunter.io/ios/app/introstat-statistics-solver/id1592602025/reviews - App overview in markdown: https://appshunter.io/ios/app/introstat-statistics-solver/id1592602025.md - Rating breakdown: 5★ 22 · 4★ 2 · 3★ 0 · 2★ 0 · 1★ 0 ## Newest reviews (1 of 13) ### 5/5 — So useful! *2021-11-02* Wow! I’ve been waiting for an advanced calculator like this for my my phone and this gets anything I want done with ease. Godsend of an app! ## Most critical reviews (10 lowest-rated) ### 1/5 — GATEKEEPING ACCESSIBILITY IS UNACCEPTABLE *2024-09-22, version 1.0.6* I was really excited to use this app to help me practice and better understand course concepts, but I’m disappointed that an essential accessibility feature like dark mode zoom are locked behind a paywall. Dark mode isn’t just a cosmetic preference—it’s important for users with visual impairments, light sensitivity, or those who simply want to reduce eye strain especially during nighttime use. Forcing people to pay for something that improves usability and comfort feels like prioritizing profit over accessibility. Even though I find the app immensely helpful and would like to support the devs by paying for it, I can't. Not while accessibility is treated as a basic luxury, and not while I have to use an inverted filter at night to avoid getting a migraine from the harsh white screen. I don't even need to touch on why zoom is important, that one is fairly obvious. My two cents: Accessibility features should be available to all users, not treated as premium add-ons. I urge the devs to reconsider this decision and make dark/light mode available to free users. Even if ### 4/5 — a *2025-05-16* It can’t do tables with more than 11 columns or rows ### 5/5 — Perfect app but no two factor ANOVA tests :(( *2023-11-09* That’s about my only issue but it’s a perfect app otherwise ### 5/5 — Good stuff *2023-09-21* Has a free textbook inside and intuitive functions ### 5/5 — an exceptional app with exceptional support *2023-05-03* not only is IntroStat - Statistics Solver an outstanding probability and statistics calculator ideal for an introductory statistics couse, it's an exceptional value with detailed examples and explanations . . . moreover, the developer, zhiyi zhang, is remarkably helpful in illuminating difficult concepts ### 5/5 — Great App! *2022-08-08* I love this app, I’m currently studying introductory statistics and this app has been a life saver so many helpful things! ### 5/5 — Excellent and Useful-DOCTORAL STUDENTS MUST BUY *2022-08-03* This app is an absolute life saver with statistics. If you’re a doctoral researcher or anyone who is in a statistics class, this app is a must have. Don’t waste your money of expensive programs or calculators when you can purchase the premium version of this app and have everything you need including a whole textbook!! ### 5/5 — Great for people who are terrible at math *2022-07-18* I have never written a review before, but I really want people to know how amazing this app is! It genuinely saved my life during my summer statistics class. It’s super easy to use and gives you all the information you need with no paid memberships or anything. I got tired of googling specific calculators for each individual problem and discovered this app which has all of them in one! It’s much easier to use than a ti-84 and gives great explanations. 11/10 recommend to struggling college students lol ### 5/5 — Simply perfect *2022-02-11, version 1.0.1* Such an awesome calculator! Keep up the good work @creator. the statement "not all heroes wear cape" is apt for the creator of this app! ### 5/5 — Very Informative *2021-12-12* Everything about this app is concise and helpful, it guides you along every problem and has so many resources and tools. Really glad to have this as a way of checking my work ! ## Most praised reviews (2 highest-rated) ### 5/5 — Great for exploring probability and statistics *2021-11-06* Very intuitive tool if you want to explore different concepts in statistics and probability. Easy to modify parameters and quickly see the results ### 5/5 — Great App! *2021-11-03* A quite handy tool for introductory statistics! The whole package! Highly recommend it! --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*