# Ruler vs ASK Cam

The clearest difference is ads: ASK Cam at none against Ruler's shown. Ruler's advantage is iOS requirement (13.0 vs 16.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ruler ships an update every 14 months, ASK Cam every 18 months. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Ruler | ASK Cam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (413 ratings)](https://appshunter.io/ios/app/ruler/id1555214809/reviews)** | — |
| Number of ratings | **413** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 14 months** | Every 18 months |
| Monetization | Ad-supported | — |
| Size | 6 MB | 13 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matrix Software Co.](https://appshunter.io/developer/1457004046) | [CDNTV Tecnologia LTDA](https://appshunter.io/developer/1481116398) |

## What reviewers say

### Ruler

[App page](https://appshunter.io/ios/app/ruler/id1555214809)

Measure objects and distances with an on-screen ruler and augmented reality. Supports inches and centimeters, with features for linear sizes, angles, area, volume, and more. Save your measurements for later use.

**Highlights:** On-screen ruler for small objects, Augmented Reality (AR) measuring, Measure linear sizes in cm/inches, Calculate angles, area, and volume, Save measurements, Generate plan projections

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

**In-app purchases:** none

**What reviewers like**

- 👍 Basic caliper and spirit level included
- ✅ Option to opt-out of data selling/sharing
- 👌 Accurate measurements (Arabic review)

**What reviewers complain about**

- 📏 Inaccurate measurements
- 💥 Frequent app crashes
- 💸 Limited free functionality (5" limit)
- 🚫 Cannot switch to metric (cm)
- 🤷 Unclear AR mode usage

**Reported bugs**

- App crashes on iPhone 17 and iPad
- App crashes within 1 minute
- AR mode not functional
- Cannot switch to cm
- Measurements are out of scale

**Requested features**

- Fix crashing issues
- Enable switching to metric (cm)
- Improve AR mode usability
- Add save and print functionality
- Provide usage instructions


### ASK Cam

[App page](https://appshunter.io/ios/app/ask-cam/id6743632662)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ruler free?

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

### Is ASK Cam free?

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

### Do Ruler or ASK Cam have ads?

Ruler shows ads; ASK Cam does not.

### Which is updated more often, Ruler or ASK Cam?

Ruler ships an update every 14 months, and ASK Cam every 18 months. Most recently, Ruler was updated on October 14, 2026 and ASK Cam on October 3, 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.*