# Pythagoras HD vs Goldbach's Conjecture

The clearest difference is update cadence: Goldbach's Conjecture at every 8 months against Pythagoras HD's every 24 months. On price, ads, in-app purchases and device support there is nothing between them.

Pythagoras HD costs $0.99 and Goldbach's Conjecture $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, Goldbach's Conjecture every 8 months. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Pythagoras HD | Goldbach's Conjecture |
| --- | --- | --- |
| 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 | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 8 months** |
| Monetization | Paid | — |
| Size | 10 MB | 34 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPad, Mac** |
| 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


### Goldbach's Conjecture

[App page](https://appshunter.io/ios/app/goldbachs-conjecture/id1385243580)

**In-app purchases:** none


## Frequently asked questions

### Is Pythagoras HD free?

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

### Is Goldbach's Conjecture free?

Goldbach's Conjecture costs $0.99, with no in-app purchases.

### Do Pythagoras HD or Goldbach's Conjecture have ads?

Neither Pythagoras HD nor Goldbach's Conjecture shows ads.

### Which is updated more often, Pythagoras HD or Goldbach's Conjecture?

Pythagoras HD ships an update every 24 months, and Goldbach's Conjecture every 8 months. Most recently, Pythagoras HD was updated on October 11, 2026 and Goldbach's Conjecture on October 3, 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.*