# OpenSTARS vs N

The clearest difference is iOS requirement: OpenSTARS at 13.0 against N's 17.0. On price, ads, in-app purchases and device support 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 | OpenSTARS | N |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Size | 10 MB | 1 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [WILLIAM ERNEST MACOMBER](https://appshunter.io/developer/1861347536) | [Zeul Mordasiewicz](https://appshunter.io/developer/1878875793) |

## What reviewers say

### OpenSTARS

[App page](https://appshunter.io/ios/app/openstars-atc-radar-sim/id6756551072)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### N

[App page](https://appshunter.io/ios/app/n-back-math/id6769662439)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OpenSTARS free?

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

### Is N free?

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

### Do OpenSTARS or N have ads?

Neither OpenSTARS nor N shows ads.

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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.*