Vimi vs Chalk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vimi
This AI-powered math tutor creates personalized learning paths to help users master math concepts. It offers adaptive lessons, clear explanations, and engaging exercises tailored to school curricula, making learning approachable and fun.
- Personalized learning paths
- Adaptive lessons
- Curriculum-aligned content
- Clear explanations
- Engaging exercises
- Instant feedback and solutions
- Progress tracking
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Master math with Vimi, your personal AI tutor that makes learning simple, fast, and fun. Vimi figures out your level and designs a personalized path that fits you. You’ll get quick, adaptive lessons that fill in your knowledge gaps and help you feel in control again. Vimi helps you finally feel confident in class with short, engaging lessons built around your school’s curriculum, so every topic you practice matches what you’re learning in school. It’s like having a friendly local tutor who explains things clearly, no confusing terms, just simple explanations that actually make sense. With Vimi, math feels approachable and fun, thanks to a game-like experience that keeps you motivated. Each session includes short exercises that focus on what you need most, instant feedback with helpful hints and full solutions, plus a progress tracker so you can see how far you’ve come. Learn key topics including: Fractions, percentages, equations, inequalities, geometry, functions, probability, statistics, logic, and more. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Chalk
This AI-powered math tutor visually explains concepts step-by-step on a digital whiteboard, mimicking human handwriting. It guides users through problems, identifies mistakes, and offers personalized learning for various math courses.
- Visual step-by-step explanations
- Human-like handwriting on whiteboard
- Live mistake detection and correction
- Interactive problem-solving guidance
- Covers multiple math courses
- Progress tracking and mastery climb
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The math tutor that teaches — not just answers. Chalk draws every step on a real whiteboard in human handwriting, explains its thinking out loud, and hands you the next step to try — like a great tutor at the board. Write a problem with Apple Pencil, type it, or scan it, and work through it together. WATCH IT DRAW Every step appears on the board stroke by stroke — equations, graphs, diagrams — in real handwriting, never a wall of text. HEAR IT THINK Chalk talks you through each move in a natural voice, so you follow the reasoning, not just the result. IT CATCHES YOUR MISTAKES Write your own work on the board and Chalk checks it live, underlines the exact step that went wrong, and shows you why. IT TEACHES, AND IT ANSWERS WHEN YOU ASK Chalk works the problem with you a step at a time, shows the reasoning on the board, and lets you try the next one yourself so it sticks for the test. Ask for the answer outright and you get it, with every step shown. EVERY COURSE, ONE TUTOR Pre-Algebra, Algebra 1 & 2, Geometry, Trigonometry, Pre-Calculus, Calculus, Linear Algebra, Statistics and more — with lessons that adapt to your pace and progress tracking that shows your mastery climb. MADE FOR iPHONE AND iPAD Full whiteboard with Apple Pencil support on iPad, and a beautiful board built for one hand on iPhone. START WITH A FREE WEEK Try Chalk Lite free for 7 days, then $7.99/month for 150 tutor replies a month, or $59.99 a year. Chalk Unlimited is $19.99/month or $119.99 a year with no reply count. Cancel before the trial ends and pay nothing. Either plan costs less than one hour with a human tutor. Chalk — the tutor that draws back. SUBSCRIPTION DETAILS Chalk Lite and Chalk Unlimited are auto-renewable subscriptions, billed monthly or yearly. Chalk Lite monthly includes a 7-day free trial for new subscribers; payment is charged to your Apple Account when the trial ends, or at confirmation of purchase for plans without a trial. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period (or the trial), and can be managed or cancelled anytime in your Apple Account settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Chalk Terms of Service: https://try-chalk.com/app/legal/terms Privacy Policy: https://try-chalk.com/app/legal/privacy
Screenshots
Verdict
The clearest difference is rating: Vimi at 4.5 against Chalk's 3.6. Vimi also leads on monetization model (free vs free with in-app purchases) and ratings volume (1.1K vs 5). Chalk's advantage is ads (none vs shown). On price, update cadence, 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. Vimi sells 10 in-app purchases, starting at $19.99 per month and Chalk sells 7 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
Vimi holds the better App Store score, 4.5 against 3.6. That said, the two scores are not equally well evidenced: Vimi has 1.1K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 57% of Vimi's written reviews are positive against 33% of Chalk's.
Vimi ships an update every 9 days, Chalk every 5 days. The most recent releases landed on November 12, 2026 and November 5, 2026 respectively.
| Parameter | Vimi | Chalk |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (1.1K ratings) — better | 3.6 (5 ratings) |
| Positive reviews | 57.1% of reviews — better | 33.3% of reviews |
| Number of ratings | 1.1K — better | 5 |
| Update frequency | Every 9 days | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | #125 — better | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 127 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | VIMI ADAPTIVE LEARNING LTD | Tyler Hayes |
Customer experience
Vimi
Chalk
In-app purchases
Vimi
- Vimi Monthly Premium1 Month trial$19.991 Month
- summer_promotion1 Month trial$19.991 Month
- Vimi Monthly Premium3 Days trial$19.991 Month
Show 7 moreShow fewer
- Vimi monthly Premium$19.991 Month
- Vimi Monthly Premium1 Month trial$24.991 Month
- Vimi Monthly Premium3 Days trial$29.991 Month
- Vimi Quarterly Premium3 Days trial$59.993 Months
- Vimi Annual Premium3 Days trial$94.901 Year
- Vimi Annual Premium3 Days trial$119.991 Year
- Vimi Premium Annual$154.991 Year
Chalk
- Chalk Lite7 Days trial$7.991 Month
- Chalk Lite$7.991 Month
- Chalk Plus$11.991 Month
Show 4 moreShow fewer
- Chalk Unlimited$19.991 Month
- Chalk Lite (Yearly)$59.991 Year
- Chalk Plus (Yearly)$83.991 Year
- Chalk Unlimited (Yearly)$119.991 Year









