Classroom Spinners vs Pythagoras Interactive
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Classroom Spinners
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Classroom Spinners is a collection of spinners specifically designed for educators. Using a slider the spinner can be changed to accommodate a variety of setups: 3, 4, 5, 6, 8 or 10 sections. Sections can be labelled with either numbers or letters. Use Classroom Spinners to conduct probability experiments by spinning the spinner a specific number of times. With your students compare how the experimental probability compares with the theoretical probability?
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 Classroom Spinners's $0.99. Pythagoras Interactive also leads on update cadence (every 2 weeks vs every 21 months). Classroom Spinners's advantage is iOS requirement (12.0 vs 16.0). On 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
Pythagoras Interactive is free to download; Classroom Spinners costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Classroom Spinners ships an update every 21 months, Pythagoras Interactive every 2 weeks. The most recent releases landed on September 13, 2026 and August 20, 2026 respectively.
| Parameter | Classroom Spinners | Pythagoras Interactive |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 21 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPad, Apple TV | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 7 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Ventura Educational Systems | ALAN PETERSON |
In-app purchases
Classroom Spinners
No in-app purchases
Pythagoras Interactive
No in-app purchases
Questions
Is Classroom Spinners free?
Is Pythagoras Interactive free?
Do Classroom Spinners or Pythagoras Interactive have ads?
Which is updated more often, Classroom Spinners or Pythagoras Interactive?
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