# IntroStat - Statistics Solver — Statistics Calculator > Statistics calculator and learning tool with integrated textbook. (iPhone/iPad app by Zhiyi Zhang.) - Source: https://appshunter.io/ios/app/introstat-statistics-solver/id1592602025 (this page in markdown: same URL + `.md`) - Developer: [Zhiyi Zhang](https://appshunter.io/developer/1592602327) - Category: Education - Price: Free with in-app purchases - Rating: 4.92/5 from 24 App Store ratings · 13 written reviews indexed - Age rating: 4+ - Requires: iOS 11.0 · 38 MB - Languages: English - Released: 2021-11-02 - Data updated: 2026-06-05 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/introstat-statistics-solver/id1592602025/reviews.md ## What is IntroStat? IntroStat is a probability and statistics calculator. It is the perfect learning tool for an introductory statistics course. Use it to perform any of your statistics calculation needs. IntroStat also includes a statistics textbook complete with formulas, exercise problems, examples, and more. FREE IN THE CALCULATOR: • Enter & Save Datasets • Generate Summary Statistics • Calculate z-Scores • Draw Boxplots & Histograms • Visualize Key Concepts like The Empirical Formula • Plot Discrete and Continuous Random Variables • Perform Probability Calculations • Conduct Hypothesis Testing • Compute Confidence Intervals • Lookup Critical Values of Distributions • Perform Simple Regression Analysis • ANOVA, Chi-Square, & F-Tests • Introductory Statistics Textbook Upgrade as a Premium User to unlock: • Dark Mode • 12 Color Themes • Zoom • Custom Decimal Precision • Comma Display • No Ads Have any questions? Please reach out to us via email at IntroStatApp@gmail.com. End User Licensing Agreement: https://www.introstatapp.com/user-agreement Privacy Policy: https://www.introstatapp.com/privacy-policy ## Key features - Summary statistics calculation - Data visualization (boxplots, histograms) - Probability calculations - Hypothesis testing - Confidence intervals - Integrated statistics textbook ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | IntroStat Premium Features | $4.99 | one-time | ## Recent user reviews (10 of 13) All indexed reviews: https://appshunter.io/ios/app/introstat-statistics-solver/id1592602025/reviews.md ### 4/5 — a *2025-05-16* It can’t do tables with more than 11 columns or rows ### 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 ### 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 ! ## Frequently asked questions about IntroStat ### What statistics calculations can IntroStat perform? IntroStat can perform a wide array of calculations including summary statistics, z-scores, probability calculations, hypothesis testing, confidence intervals, and regression analysis. It also supports ANOVA, Chi-Square, and F-Tests. ### Does IntroStat include a textbook? Yes, IntroStat includes a comprehensive statistics textbook. This textbook features formulas, exercise problems, and examples to aid in learning. ### What features are unlocked with the premium upgrade in IntroStat? The premium upgrade for IntroStat unlocks features such as Dark Mode, 12 color themes, zoom functionality, custom decimal precision, comma display, and removes advertisements. ### What is the user rating for IntroStat? IntroStat has a high user rating of 4.9 stars, based on 24 ratings. This indicates a very positive user experience. ### Is IntroStat available on multiple devices? IntroStat is supported on iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users. ### How often is IntroStat updated? The latest version of IntroStat was released on September 30, 2023. While specific update frequency isn't detailed, this indicates recent development and support. ### Does IntroStat have ads? Yes, IntroStat contains advertisements. Users can remove these ads by upgrading to the premium version. ### What is the age rating for IntroStat? IntroStat has an age rating of 4+, making it suitable for a broad audience, including younger learners. ## Version history (last 5 releases) ### 1.0.6 — 2023-09-30 Corrected the Hypothesis in the Hypothesis Test for Difference in Proportions. ### 1.0.5 — 2023-07-24 Updated to include GDPR message and request for App Tracking Transparency data. ### 1.0.4 — 2023-04-16 Fixed blank Results page issue from previous release. ### 1.0.3 — 2023-04-14 Corrected Critical Value shown in the Additional Calculations of Test for Independence of 2 Factors. Fixed the calculation for data lists in the Test for Equality of 2 Variances (using the sample variance instead of the sample standard deviation). ### 1.0.2 — 2022-06-23 Upon popular request, a setting to use the number pad has been added. Corrected previous z-score edge case. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*