# Goldbach's Conjecture vs Hexaflexagons

The clearest difference is price: Hexaflexagons at Free against Goldbach's Conjecture's $0.99. Hexaflexagons also leads on update cadence (monthly vs every 8 months). Goldbach's Conjecture's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

Hexaflexagons is free to download; Goldbach's Conjecture costs $0.99 up front. Hexaflexagons sells 2 one-off in-app purchases. Goldbach's Conjecture asks for nothing beyond the download.

Goldbach's Conjecture ships an update every 8 months, Hexaflexagons monthly. The most recent releases landed on October 3, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Goldbach's Conjecture | Hexaflexagons |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (27 ratings)](https://appshunter.io/ios/app/hexaflexagons/id1503279832/reviews)** |
| Number of ratings | — | **27** |
| Positive reviews | — | 97.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 38 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPad, Mac | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [VUXO I, CORP.](https://appshunter.io/developer/1144164576) |

## What reviewers say

### Goldbach's Conjecture

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

**In-app purchases:** none


### Hexaflexagons

[App page](https://appshunter.io/ios/app/hexaflexagons/id1503279832)

Design and create unique paper puzzles with hidden sides. Personalize them with your own designs or use templates for secret messages, photo gifts, or custom cards.

**Highlights:** Design custom hexaflexagons, Use pre-made designs, Create secret messages, Make photo gifts, Design birthday cards, Printable designs

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Make unlimited hexaflexagons | $3.99 | one-time |
| Make unlimited hexaflexagons | $4.99 | one-time |


## Frequently asked questions

### Is Goldbach's Conjecture free?

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

### Is Hexaflexagons free?

Hexaflexagons is free to download, with in-app purchases available.

### Do Goldbach's Conjecture or Hexaflexagons have ads?

Neither Goldbach's Conjecture nor Hexaflexagons shows ads.

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

Goldbach's Conjecture ships an update every 8 months, and Hexaflexagons monthly. Most recently, Goldbach's Conjecture was updated on October 3, 2026 and Hexaflexagons on October 18, 2026.

---

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