# Goldbach conjecture vs ChronoFusion

The clearest difference is price: Goldbach conjecture at Free against ChronoFusion's $3.99. Goldbach conjecture also leads on iOS requirement (16.0 vs 26.0). ChronoFusion's advantage is device support. On in-app purchases there is nothing between them.

Goldbach conjecture is free to download; ChronoFusion costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Goldbach conjecture | ChronoFusion |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 4 months |
| Size | 1 MB | 29 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Lucainson Raymond](https://appshunter.io/developer/1805397683) |

## What reviewers say

### Goldbach conjecture

[App page](https://appshunter.io/ios/app/goldbach-conjecture/id6627338523)

**In-app purchases:** none


### ChronoFusion

[App page](https://appshunter.io/ios/app/chronofusion/id6744655659)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Goldbach conjecture free?

Goldbach conjecture is free to download, with no in-app purchases.

### Is ChronoFusion free?

ChronoFusion costs $3.99, with no in-app purchases.

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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.*