# Ruler App vs LiDAR Depth Map 3D Scanner

The clearest difference is price: LiDAR Depth Map 3D Scanner at Free against Ruler App's $0.99. LiDAR Depth Map 3D Scanner also leads on update cadence (every 2 months vs every 11 months). Ruler App's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On ads there is nothing between them.

LiDAR Depth Map 3D Scanner is free to download; Ruler App costs $0.99 up front. LiDAR Depth Map 3D Scanner sells 3 in-app purchases, starting at $6.99 per 7 days. Ruler App asks for nothing beyond the download.

Ruler App ships an update every 11 months, LiDAR Depth Map 3D Scanner every 2 months. The most recent releases landed on September 28, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Ruler App | LiDAR Depth Map 3D Scanner |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[2.6 (5 ratings)](https://appshunter.io/ios/app/ruler-app/id303731879/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 2 MB | 14 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [Angel App Publishing Ltd.](https://appshunter.io/developer/412814814) |

## What reviewers say

### Ruler App

[App page](https://appshunter.io/ios/app/ruler-app/id303731879)

Transform your iPhone or Apple Watch into a precise measuring tool. Easily switch between imperial and metric units and adjust the ruler's height for direct comparisons. Customize your experience with different color schemes.

**Highlights:** Imperial and metric scale switching, Adjustable ruler height, Color scheme customization, Apple Watch compatibility, Switchable ruler scales

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### LiDAR Depth Map 3D Scanner

[App page](https://appshunter.io/ios/app/lidar-depth-map-3d-scanner/id6786824672)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $6.99 | per 7 days |
| Annual Subscription | $39.99 | per year |
| Lifetime Purchase | $69.99 | one-time |


## Frequently asked questions

### Is Ruler App free?

Ruler App costs $0.99, with no in-app purchases.

### Is LiDAR Depth Map 3D Scanner free?

LiDAR Depth Map 3D Scanner is free to download, with in-app purchases available.

### Do Ruler App or LiDAR Depth Map 3D Scanner have ads?

Neither Ruler App nor LiDAR Depth Map 3D Scanner shows ads.

### Which is updated more often, Ruler App or LiDAR Depth Map 3D Scanner?

Ruler App ships an update every 11 months, and LiDAR Depth Map 3D Scanner every 2 months. Most recently, Ruler App was updated on September 28, 2026 and LiDAR Depth Map 3D Scanner on September 30, 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.*