# Compass Level Sensor Tools vs Photo Ruler

Compass Level Sensor Tools and Photo Ruler 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. Compass Level Sensor Tools sells 3 in-app purchases, starting at $3.99 per 7 days and Photo Ruler sells 1 in-app purchase, starting at $6.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Compass Level Sensor Tools | Photo Ruler |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 15 MB | 6 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [David Pavlovschii](https://appshunter.io/developer/1854112110) | [Ihar Shaduryn](https://appshunter.io/developer/988578285) |

## What reviewers say

### Compass Level Sensor Tools

[App page](https://appshunter.io/ios/app/compass-level-sensor-tools/id6772147983)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sensor Toolbox Weekly | $3.99 | per 7 days |
| Sensor Toolbox Yearly | $24.99 | per year |
| Sensor Toolbox Lifetime | $34.99 | one-time |


### Photo Ruler

[App page](https://appshunter.io/ios/app/photo-ruler-measure-objects/id6792457241)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Paper Image Meter Unlimited | $6.99 | per year |


## Frequently asked questions

### Is Compass Level Sensor Tools free?

Compass Level Sensor Tools is free to download, with in-app purchases available.

### Is Photo Ruler free?

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

### Do Compass Level Sensor Tools or Photo Ruler have ads?

Neither Compass Level Sensor Tools nor Photo Ruler 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.*