# Ruler ++ vs 3D Snap

The clearest difference is rating: 3D Snap at 4.0 against Ruler ++'s 3.5. 3D Snap also leads on update cadence (every 3 weeks vs every 5 months) and review sentiment (32% vs 15%). Ruler ++'s advantage is ads (none vs shown) and iOS requirement (8.0 vs 18.0). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Ruler ++ sells 1 one-off in-app purchase and 3D Snap sells 15 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

3D Snap holds the better App Store score, 4.0 against 3.5. Both are backed by a comparable volume of ratings — 934 and 408 respectively. Written reviews point the same way: 15% of Ruler ++'s written reviews are positive against 32% of 3D Snap's.

Ruler ++ ships an update every 5 months, 3D Snap every 3 weeks. Both last shipped on September 26, 2026.

## The numbers

| Metric | Ruler ++ | 3D Snap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (934 ratings)](https://appshunter.io/ios/app/ruler-plus-plus/id381682088/reviews) | **[4.0 (408 ratings)](https://appshunter.io/ios/app/3d-snap-lidar-room-scanner/id6477467417/reviews)** |
| Number of ratings | **934** | 408 |
| Positive reviews | 14.9% of reviews | **32.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#149** |
| Size | 17 MB | 170 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fapps World et Cie S.E.C.S.](https://appshunter.io/developer/881437066) | [BPMobile](https://appshunter.io/developer/1085442365) |

## What reviewers say

### Ruler ++

[App page](https://appshunter.io/ios/app/ruler-plus-plus/id381682088)

This app allows you to measure lengths accurately in both inches and centimeters. It provides a simple and straightforward tool for quick measurements.

**Highlights:** Measure in inches, Measure in centimeters, Accurate length measurement, Simple interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advertisement-free upgrade | $0.99 | one-time |

**What reviewers like**

- 👍 Simple and quick to use
- 👍 Includes both metric and Imperial measures
- 🚀 Great for wanting to measure displayed length

**What reviewers complain about**

- 🐛 Measurements are not accurate
- 🐛 Ruler not matching real-world measurements
- 🐛 Ruler not scaling properly on different devices
- 🔋 Ads make it impossible to use
- 🔋 Constant, intrusive ads

**Reported bugs**

- Ruler markings are incorrect
- Ruler not displaying full length on screen
- Incompatible with newer iPhone models

**Requested features**

- Add ability to calibrate ruler for different devices
- Improve accuracy of measurements
- Reduce or remove ads


### 3D Snap

[App page](https://appshunter.io/ios/app/3d-snap-lidar-room-scanner/id6477467417)

**Currently charting:** #149 Top Grossing · Productivity (US App Store)

Transform your iPhone into a powerful floor plan creator and 3D scanner using LiDAR technology. Quickly capture room layouts, measure spaces, and visualize objects in 3D for renovation, interior design, or moving.

**Highlights:** LiDAR-powered room scanning, Instant floor plan generation, 3D object scanning from photos, Accurate AR measurements, Export floor plans and 3D models, Measure walls, areas, and furniture

**Features:** Vision Pro support

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per 7 days |
| Premium | $5.99 | per 7 days |
| Premium | $5.99 | per 7 days |
| Premium | $6.99 | per 7 days |
| Premium | $6.99 | per 7 days |
| Premium | $7.99 | per 7 days |
| Premium | $8.99 | per 7 days |
| Premium | $8.99 | per 7 days |
| Premium | $9.99 | per 7 days |
| Premium | $9.99 | per 7 days |
| Premium | $19.99 | per year |
| Premium | $29.99 | per year |
| Premium | $39.99 | per year |
| Premium | $149.99 | per year |
| Premium | $149.99 | per year |

**What reviewers like**

- 🚀 Accurate measurements
- 👍 Easy to use
- 🤩 Helpful for home improvement projects
- 💯 Stunningly realistic 3D models

**What reviewers complain about**

- 🐛 Crashes frequently
- 🤯 Confusing navigation and UI
- 💰 Expensive subscription model
- 🚫 Incompatible with older devices
- 🤔 Inaccurate room scans and measurements

**Reported bugs**

- Walls appear crooked in 3D models
- Furniture obstructs accurate scanning
- Difficulty cancelling subscription

**Requested features**

- Ability to edit scanned rooms
- Option to manually input measurements
- Export functionality for floor plans
- Multi-room support


## Frequently asked questions

### Is Ruler ++ free?

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

### Is 3D Snap free?

3D Snap is free to download, with in-app purchases available.

### Which has better reviews, Ruler ++ or 3D Snap?

3D Snap is rated higher. Ruler ++ averages 3.5 out of 5 from 934 ratings, while 3D Snap averages 4.0 from 408 ratings.

### Do Ruler ++ or 3D Snap have ads?

3D Snap shows ads; Ruler ++ does not.

### Which is updated more often, Ruler ++ or 3D Snap?

Ruler ++ ships an update every 5 months, and 3D Snap every 3 weeks. Most recently, Ruler ++ was updated on September 26, 2026 and 3D Snap on September 26, 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.*