# TouchCaliper Ruler & Caliper vs Digital Ruler Pro

The clearest difference is iOS requirement: Digital Ruler Pro at 16.0 against TouchCaliper Ruler & Caliper's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. TouchCaliper Ruler & Caliper sells 1 one-off in-app purchase and Digital Ruler Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | TouchCaliper Ruler & Caliper | Digital Ruler Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 2 MB | 6 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Shuhei Yamamoto](https://appshunter.io/developer/1896725589) | [学友 刘](https://appshunter.io/developer/1895323694) |

## What reviewers say

### TouchCaliper Ruler & Caliper

[App page](https://appshunter.io/ios/app/touchcaliper-ruler-and-caliper/id6777427980)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TouchCaliper Pro | $3.99 | one-time |


### Digital Ruler Pro

[App page](https://appshunter.io/ios/app/digital-ruler-pro/id6814484613)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $9.99 | one-time |


## Frequently asked questions

### Is TouchCaliper Ruler & Caliper free?

TouchCaliper Ruler & Caliper is free to download, with in-app purchases available.

### Is Digital Ruler Pro free?

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

### Do TouchCaliper Ruler & Caliper or Digital Ruler Pro have ads?

Neither TouchCaliper Ruler & Caliper nor Digital Ruler Pro 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.*