# 100cm Ruler vs Tape Measure Camera Ruler 3D

The clearest difference is ratings volume: Tape Measure Camera Ruler 3D at 774 against 100cm Ruler's 1. Tape Measure Camera Ruler 3D also leads on rating (4.2 vs 4.0). 100cm Ruler's advantage is review sentiment (45% vs 23%) and iOS requirement (12.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 100cm Ruler sells 1 one-off in-app purchase and Tape Measure Camera Ruler 3D sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Tape Measure Camera Ruler 3D holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: Tape Measure Camera Ruler 3D has 774 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 45% of 100cm Ruler's written reviews are positive against 23% of Tape Measure Camera Ruler 3D's, so the app with the better star average is not the one people write more warmly about.

100cm Ruler ships an update every 3 months, Tape Measure Camera Ruler 3D every 5 months. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 100cm Ruler | Tape Measure Camera Ruler 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/100cm-ruler/id982815744/reviews) | **[4.2 (774 ratings)](https://appshunter.io/ios/app/tape-measure-camera-ruler-3d/id1078675465/reviews)** |
| Number of ratings | 1 | **774** |
| Positive reviews | **45.1% of reviews** | 22.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 62 MB | 31 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ZOOMO Inc.](https://appshunter.io/developer/490112424) | [IBN Software GmbH](https://appshunter.io/developer/1078675464) |

## What reviewers say

### 100cm Ruler

[App page](https://appshunter.io/ios/app/100cm-ruler/id982815744)

This app provides a digital ruler for measuring the length and diameter of small objects directly on your device. It features a millimeter scale and allows for easy sliding to measure.

**Highlights:** Digital ruler functionality, Millimeter scale, Diameter measurement, Screen sliding for measurement, Ad removal option

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADS | $1.99 | one-time |


### Tape Measure Camera Ruler 3D

[App page](https://appshunter.io/ios/app/tape-measure-camera-ruler-3d/id1078675465)

Measure room floor areas, dimensions like height, length, and width, and distances using your device's camera with augmented reality. Get quick estimates for room and object sizes without needing a physical tape measure or ruler.

**Highlights:** Measure room area, Measure height, width, length, Measure distance to camera, ARKit augmented reality technology, Imperial and metric units, Estimate room and object sizes

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Camera Measure Pro - Weekly | $3.99 | per 7 days |
| Tape Measure Pro - Monthly | $7.99 | per month |
| Camera Measure Pro - Yearly | $12.99 | per year |
| Tape Measure Camera Ruler Pro | $4.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 👍 Helpful for measuring
- 🤖 Augmented reality features

**What reviewers complain about**

- 🐛 Inaccurate measurements
- 💰 Forced to upgrade to paid version
- 📢 Excessive ads and pop-ups
- 🤖 Compatibility issues
- 📚 Poor documentation and instructions

**Reported bugs**

- Crashes and freezes
- Inability to complete basic tasks
- Incompatibility with certain devices

**Requested features**

- More measurement options
- Improved accuracy and reliability
- Ability to save and export measurements


## Frequently asked questions

### Is 100cm Ruler free?

100cm Ruler is free to download, with in-app purchases available.

### Is Tape Measure Camera Ruler 3D free?

Tape Measure Camera Ruler 3D is free to download, with in-app purchases available.

### Which has better reviews, 100cm Ruler or Tape Measure Camera Ruler 3D?

Tape Measure Camera Ruler 3D is rated higher. 100cm Ruler averages 4.0 out of 5 from 1 ratings, while Tape Measure Camera Ruler 3D averages 4.2 from 774 ratings.

### Do 100cm Ruler or Tape Measure Camera Ruler 3D have ads?

Neither 100cm Ruler nor Tape Measure Camera Ruler 3D shows ads.

### Which is updated more often, 100cm Ruler or Tape Measure Camera Ruler 3D?

100cm Ruler ships an update every 3 months, and Tape Measure Camera Ruler 3D every 5 months. Most recently, 100cm Ruler was updated on October 14, 2026 and Tape Measure Camera Ruler 3D on October 24, 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.*