# Pythagoras HD vs Classroom Spinners

Pythagoras HD and Classroom Spinners are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Pythagoras HD costs $0.99 and Classroom Spinners $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pythagoras HD ships an update every 24 months, Classroom Spinners every 21 months. The most recent releases landed on June 5, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Pythagoras HD | Classroom Spinners |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/pythagoras-hd/id404432708/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 21 months** |
| Monetization | Paid | — |
| Size | 10 MB | 7 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPad, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Koksharov](https://appshunter.io/developer/700716922) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### Pythagoras HD

[App page](https://appshunter.io/ios/app/pythagoras-hd/id404432708)

Explore the Pythagorean Theorem through interactive puzzles and visual proofs. This educational app offers a unique, formula-free approach to understanding geometry. It's designed to make learning engaging and accessible.

**Highlights:** Visual proofs of Pythagorean Theorem, Interactive geometric puzzles, Formula-free learning, Engaging educational experience, iPad compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


### Classroom Spinners

[App page](https://appshunter.io/ios/app/classroom-spinners/id1143588037)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pythagoras HD free?

Pythagoras HD costs $0.99, with no in-app purchases.

### Is Classroom Spinners free?

Classroom Spinners costs $0.99, with no in-app purchases.

### Do Pythagoras HD or Classroom Spinners have ads?

Neither Pythagoras HD nor Classroom Spinners shows ads.

### Which is updated more often, Pythagoras HD or Classroom Spinners?

Pythagoras HD ships an update every 24 months, and Classroom Spinners every 21 months. Most recently, Pythagoras HD was updated on June 5, 2026 and Classroom Spinners on September 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*