# Protractor, Level vs Diamond Grader

Protractor, Level and Diamond Grader are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Protractor, Level sells 1 one-off in-app purchase and Diamond Grader sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Protractor, Level | Diamond Grader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 2 MB | 7 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Streamlined Studios](https://appshunter.io/developer/1802378603) | [Angel App Publishing Ltd.](https://appshunter.io/developer/412814814) |

## What reviewers say

### Protractor, Level

[App page](https://appshunter.io/ios/app/protractor-level-notch/id6795315730)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Notch Pro | $2.99 | one-time |


### Diamond Grader

[App page](https://appshunter.io/ios/app/diamond-grader/id6803156673)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $6.99 | per 7 days |
| Monthly Subscription | $12.99 | per month |
| Annual Subscription | $59.99 | per year |


## Frequently asked questions

### Is Protractor, Level free?

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

### Is Diamond Grader free?

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

### Do Protractor, Level or Diamond Grader have ads?

Neither Protractor, Level nor Diamond Grader 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.*