# AR vProtractor vs Liberty91

The clearest difference is in-app purchases: AR vProtractor at none against Liberty91's 4. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Liberty91 sells 4 in-app purchases, starting at $9.90 per month. AR vProtractor asks for nothing beyond the download.

## The numbers

| Metric | AR vProtractor | Liberty91 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | — |
| Size | 58 MB | 16 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kazufumi Suzuki](https://appshunter.io/developer/1512087197) | [Renze Jongman](https://appshunter.io/developer/1708053965) |

## What reviewers say

### AR vProtractor

[App page](https://appshunter.io/ios/app/ar-vprotractor/id1589573013)

**In-app purchases:** none


### Liberty91

[App page](https://appshunter.io/ios/app/liberty91/id6467023059)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Essentials - 1 Month | $9.90 | per month |
| Professional - 1 Month | $24.90 | per month |
| Essentials - 1 Year | $99.90 | per year |
| Professional - 1 Year | $249.00 | per year |


## Frequently asked questions

### Is AR vProtractor free?

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

### Is Liberty91 free?

Liberty91 is free to download, with in-app purchases available.

### Do AR vProtractor or Liberty91 have ads?

Neither AR vProtractor nor Liberty91 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.*