# Ruler with Caliper, Protractor vs WetRuler

The clearest difference is in-app purchases: WetRuler at none against Ruler with Caliper, Protractor's 3. WetRuler also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Ruler with Caliper, Protractor sells 3 in-app purchases, starting at $3.99 per 7 days. WetRuler asks for nothing beyond the download.

Ruler with Caliper, Protractor ships an update every 28 months, WetRuler every 43 months. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Ruler with Caliper, Protractor | WetRuler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wetruler/id1445381420/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 28 months** | Every 43 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 1 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Robert Werner](https://appshunter.io/developer/1445381419) |

## What reviewers say

### Ruler with Caliper, Protractor

[App page](https://appshunter.io/ios/app/ruler-with-caliper-protractor/id1368462815)

This app transforms your device into a precise digital measuring tool. It offers accurate measurements for various objects and distances using your camera, with multiple units and offline functionality.

**Highlights:** Accurate measurements via camera, Measure small objects to large distances, User-friendly interface, Multiple measurement units (inches, cm), Virtual ruler on screen, Save and share measurements, Offline accessibility

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Yearly | $39.99 | per year |
| Lifetime | $49.99 | one-time |


### WetRuler

[App page](https://appshunter.io/ios/app/wetruler/id1445381420)

This augmented reality application measures and weighs fish using your device's camera. Simply place your catch on a surface, select the fish type, and the app will estimate its length and approximate weight. It also records a photo of your catch with the measurements displayed.

**Highlights:** AR measurement grid, Fish type selection, Approximate weight and length calculation, Records catch photos with data, Works in water for catch and release, Supports large fish up to 10 feet

**In-app purchases:** none


## Frequently asked questions

### Is Ruler with Caliper, Protractor free?

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

### Is WetRuler free?

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

### Do Ruler with Caliper, Protractor or WetRuler have ads?

Ruler with Caliper, Protractor shows ads; WetRuler does not.

### Which is updated more often, Ruler with Caliper, Protractor or WetRuler?

Ruler with Caliper, Protractor ships an update every 28 months, and WetRuler every 43 months. Most recently, Ruler with Caliper, Protractor was updated on October 22, 2026 and WetRuler on October 10, 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.*