sketchometry vs Math Interactive
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
sketchometry
This app transforms your finger drawings into precise geometric shapes on your iPhone or iPad. It turns math into an experimental subject, encouraging learners to discover concepts through hands-on interaction rather than presenting pre-made solutions.
- Finger-to-geometry conversion
- Dynamic mathematical exploration
- Experimental learning approach
- Interactive geometric drawing
- Supports iPhone and iPad
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Fascinatingly simple. Simply fascinating. sketchometry is a different kind of dynamic math software. You draw with your finger on your iPhone or iPad. sketchometry automatically converts these (finger) sketches into exact geometric objects. Mathematics becomes an experimental subject. No ready-made results are presented, learners are encouraged to go on a journey of discovery by themselves.
Math Interactive
Enhance your mathematical understanding with a comprehensive reference covering 23 subjects, over 200 articles, and interactive illustrations. Explore detailed explanations, solved problems, and proofs to master concepts from algebra to calculus. Access all content and features with a premium upgrade.
- 23 math subjects covered
- Over 200 articles with detailed descriptions
- Solved solutions and thorough proofs
- Interactive illustrations for better understanding
- Quick search for articles and formulas
- Recents category to pick up where you left off
- Share articles via social media and messaging
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Improve your math skills and get a deeper understanding of mathematical concepts, definitions, formulas and proofs. With 23 subjects containing more than 200 articles with detailed descriptions, solved solutions and thorough proofs, this app is perfect for every high school student or any person eager to learn mathematics. Improve your intuition by exploring the interactive illustrations and learn how to solve both simple and difficult math problems through elegant solutions. Buy Premium to access all content and features. • Quickly search for the article or formula you need. • Use the links to read more on a subject. • Improve your understanding with interactive illustrations. • Pick up where you left off with the "Recents"-category. • Share an article via mail, iMessage, Facebook etc. • Jump to any section through the bottom navigation. • Enjoy the graceful and user-friendly design. The app covers the following 23 subjects: • Coordinate System • Differential Calculus • Differential Equations • Exponential Functions • Functions • Geometry • Geometry Terms • Hypothesis Testing • Integral Calculus • Linear Functions • Numbers and Algebra • Percentages • Power Functions • Probability • Quadratic Equation • Quadratic Polynomial • Regression and Growth • Solid Geometry • Statistics • The Straight Line • Trigonometry • Vectors in 2D • Vectors in 3D Space
Screenshots
Verdict
The clearest difference is in-app purchases: sketchometry at none against Math Interactive's 1. sketchometry also leads on update cadence (every 10 days vs every 13 months). Math Interactive's advantage is ratings volume (726 vs 5) and iOS requirement (13.0 vs 15.0). On price, rating, review sentiment and ads 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. Math Interactive sells 1 one-off in-app purchase. sketchometry asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for sketchometry against 4.6 for Math Interactive. That said, the two scores are not equally well evidenced: Math Interactive has 726 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 65% of sketchometry's written reviews are positive against 58% of Math Interactive's.
sketchometry ships an update every 10 days, Math Interactive every 13 months. The most recent releases landed on October 12, 2026 and September 29, 2026 respectively.
| Parameter | sketchometry | Math Interactive |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) — better | 4.6 (726 ratings) |
| Positive reviews | 65.0% of reviews — better | 58.3% of reviews |
| Number of ratings | 5 | 726 — better |
| Update frequency | Every 10 days — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 82 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Universitaet Bayreuth | Rune Johannes Overgaard Hoejlund |
Customer experience
sketchometry
Math Interactive
Bugs and requests
sketchometry
Not enough reviews yet to summarise bugs or requests.
Math Interactive
Reported bugs
2 issues- Incorrect formulas and calculations
- Compatibility issues with newer iOS versions
Requested features
4 requests- Add more advanced math topics like calculus, matrices, etc.
- Include step-by-step solutions and more interactive elements
- Improve organization and flow of content
- Provide more real-world examples and applications
In-app purchases
sketchometry
No in-app purchases
Math Interactive
- Premium$2.99
Questions
Is sketchometry free?
Is Math Interactive free?
Which has better reviews, sketchometry or Math Interactive?
Do sketchometry or Math Interactive have ads?
Which is updated more often, sketchometry or Math Interactive?
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