# Rocket Navigator vs Goldbach conjecture

The clearest difference is iOS requirement: Rocket Navigator at 13.0 against Goldbach conjecture's 16.0. On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Rocket Navigator | Goldbach conjecture |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Update frequency | Every 20 months | — |
| Size | 18 MB | 1 MB |
| Requires iOS | **13.0** | 16.0 |
| Age rating | 4+ | 4+ |
| Developer | [Jignesh Fadadu](https://appshunter.io/developer/1761584757) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### Rocket Navigator

[App page](https://appshunter.io/ios/app/rocket-navigator/id6615083014)

**In-app purchases:** none


### Goldbach conjecture

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

**In-app purchases:** none


## Frequently asked questions

### Is Rocket Navigator free?

Rocket Navigator is free to download, with no in-app purchases.

### Is Goldbach conjecture free?

Goldbach conjecture is free to download, 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.*