# AR vProtractor vs Catodoro

The clearest difference is update cadence: AR vProtractor at every 4 weeks against Catodoro's every 21 months. AR vProtractor also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.5). On price, ads 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.

AR vProtractor ships an update every 4 weeks, Catodoro every 21 months. The most recent releases landed on October 12, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | AR vProtractor | Catodoro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 21 months |
| Size | 58 MB | 11 MB |
| Requires iOS | **14.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kazufumi Suzuki](https://appshunter.io/developer/1512087197) | [Suguru Tokuda](https://appshunter.io/developer/1755486582) |

## What reviewers say

### AR vProtractor

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

**In-app purchases:** none


### Catodoro

[App page](https://appshunter.io/ios/app/catodoro/id6741139264)

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

**In-app purchases:** none


## Frequently asked questions

### Is AR vProtractor free?

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

### Is Catodoro free?

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

### Do AR vProtractor or Catodoro have ads?

Neither AR vProtractor nor Catodoro shows ads.

### Which is updated more often, AR vProtractor or Catodoro?

AR vProtractor ships an update every 4 weeks, and Catodoro every 21 months. Most recently, AR vProtractor was updated on October 12, 2026 and Catodoro on October 17, 2026.

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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.*