IntroStat vs Chem AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IntroStat
This app serves as a comprehensive statistics calculator and learning tool for introductory statistics courses. It offers a wide range of calculation features, data visualization, and an integrated textbook with formulas and examples.
- Summary statistics calculation
- Data visualization (boxplots, histograms)
- Probability calculations
- Hypothesis testing
- Confidence intervals
- Integrated statistics textbook
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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
Chem AI
Instantly solve any chemistry problem with step-by-step explanations. Upload or photograph your questions, and get detailed solutions for various chemistry topics, from high school to advanced research. Offers a free trial before subscription.
- Photo recognition for chemistry problems
- Step-by-step solution explanations
- Supports high school to doctoral research topics
- Detailed math solutions
- Copy and share solutions
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Solve any chemistry problem ASAP with Chem AI, a step-by-step chemistry solver app! Download now for FREE. Got a tricky chemistry question? Need instant step-by-step explanations? Chem AI is here to save you. We got you covered for multiple choice, word, diagram, math, or any chemistry problem. Just upload or take a photo of your chemistry problem, and Chem AI instantly recognizes it and helps you solve it with a thorough explanation. KEY FEATURES - Upload or take a photo of a handwritten or digital chemistry problem. - Copy and share the detailed solutions. - Topics cover all types of chemistry, from high school to doctoral research. - Math solutions are provided with detailed steps. - We provide a free trial to test out the app. Subscription Required To continue accessing all features of Chem AI, a subscription is required. By using Chem AI, you accept our Terms of Use and Privacy Policy. Privacy Policy: https://zipoapps.com/chemaiios/privacy/ Terms: https://zipoapps.com/chemaiios/terms/
Screenshots
Verdict
The clearest difference is review sentiment: IntroStat at 92% against Chem AI's 20%. IntroStat also leads on rating (4.9 vs 4.4) and monetization model (free with in-app purchases vs subscription). Chem AI's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (822 vs 24). On price, ads, in-app purchases and device support 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. IntroStat sells 1 one-off in-app purchase and Chem AI sells 9 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
IntroStat holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: Chem AI has 822 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 92% of IntroStat's written reviews are positive against 20% of Chem AI's.
IntroStat ships an update every 3 months, Chem AI fortnightly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | IntroStat | Chem AI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (24 ratings) — better | 4.4 (822 ratings) |
| Positive reviews | 92.3% of reviews — better | 20.0% of reviews |
| Number of ratings | 24 | 822 — better |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 38 MB | 149 MB |
| Age rating | 4+ | 4+ |
| Developer | Zhiyi Zhang | ZipoApps |
Customer experience
IntroStat
Chem AI
Bugs and requests
IntroStat
Not enough reviews yet to summarise bugs or requests.
Chem AI
Reported bugs
2 issues- Freezes or goes blank when trying to get answers
- Incompatible with some chemistry problems
Requested features
3 requests- Improve accuracy for organic chemistry and physical chemistry
- Add step-by-step explanations for free users
- Improve subscription management and cancellation process
In-app purchases
IntroStat
- IntroStat Premium Features$4.99
Chem AI
- Unlimited Access3 Days trial$0.997 Days
- Chem AI - Chem Solver Weekly3 Days trial$5.997 Days
- Unlimited Access3 Days trial$8.997 Days
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- Unlimited Access3 Days trial$9.991 Year
- Unlimited Access3 Days trial$19.991 Month
- Unlimited Access3 Days trial2 variants$29.991 Year
- Chem AI - Chem Solver Yearly$34.991 Year
- Unlimited Access3 Days trial$39.991 Year
- Unlimited Access3 Days trial$49.991 Year
