Unfold vs Pythagoras Interactive
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unfold
Explore the mathematical and artistic beauty of 3D geometric solids on your device. Interact with 63 different symmetrical shapes, rotating and unfolding them to understand their geometry. Discover Platonic, Archimedean, and Johnson solids with an elegant interface and customizable colors.
- Interactive 3D solids
- 63 different geometric shapes
- Rotate and zoom functionality
- Fold and unfold solids
- 18 color options
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Unfold brings the geometry of 3D solids to life on your iPad and iPhone in an elegant and intuitive way. The artistic and mathematical beauty of these symmetrical forms has been studied for thousands of years, and now it is easier than ever to learn about these shapes. • Beautiful and simple user interface • 63 different shapes · Platonic Solids · Archimedean Solids · Johnson Solids · Prisms · Rectangular Prisms · Antiprisms • Rotate the solids to explore and learn about their shapes • Pinch & Zoom to fold and unfold the solids • Switch between 18 gorgeous colors
Pythagoras Interactive
Explore the Pythagorean Theorem with an interactive visual tool. Adjust triangle legs to observe real-time changes in square areas and hypotenuse length. Distances are displayed in radical form when necessary.
- Interactive triangle manipulation
- Visual representation of squares on sides
- Real-time updates to hypotenuse and areas
- Radical form for distances
- Clear labeling of sides and areas
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Eureka! An interactive illustration of the Pythagorean Theorem. Drag the legs of the right triangle and watch the three squares transform in real time. Every side shows its length, every square its area — in radical form when needed, so you'll see 2√2 rather than 2.828. Slide through a visual demonstration of Euclid's original proof from Book I of the Elements. Understand why the theorem is always true, not just what it claims.
Screenshots
Verdict
The clearest difference is price: Pythagoras Interactive at Free against Unfold's $0.99. Pythagoras Interactive also leads on rating (5.0 vs 4.2) and update cadence (every 2 weeks vs every 14 months). Unfold's advantage is ratings volume (46 vs 1) and iOS requirement (13.0 vs 16.0). On ads, in-app purchases, monetization model 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
Pythagoras Interactive is free to download; Unfold costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Pythagoras Interactive holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Unfold has 46 ratings behind it against 1, so its average is the more settled of the two.
Unfold ships an update every 14 months, Pythagoras Interactive every 2 weeks. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.
| Parameter | Unfold | Pythagoras Interactive |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.2 (46 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 83.9% of reviews | — |
| Number of ratings | 46 — better | 1 |
| Update frequency | Every 14 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Hangas | ALAN PETERSON |
Customer experience
Unfold
Pythagoras Interactive
In-app purchases
Unfold
No in-app purchases
Pythagoras Interactive
No in-app purchases
Questions
Is Unfold free?
Is Pythagoras Interactive free?
Which has better reviews, Unfold or Pythagoras Interactive?
Do Unfold or Pythagoras Interactive have ads?
Which is updated more often, Unfold or Pythagoras Interactive?
Other comparisons
