# Pro Ruler - Measuring Tape — Measure Height with Camera

> Camera-based measuring tool for length, height, and area in metric or imperial units. (iPhone/iPad app by KELES Dienstleistungen GmbH.)

- Source: https://appshunter.io/ios/app/pro-ruler-measuring-tape/id1541122485 (this page in markdown: same URL + `.md`)
- Developer: [KELES Dienstleistungen GmbH](https://appshunter.io/developer/1476916818)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 4.23/5 from 155 App Store ratings · 127 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 17 MB
- Languages: English, Japanese, Russian
- Released: 2020-11-21
- Data updated: 2026-06-10
- Monetization: subscription
- User reviews in markdown: https://appshunter.io/ios/app/pro-ruler-measuring-tape/id1541122485/reviews.md

## What is Pro Ruler?

With Pro Ruler you always have a ruler in your pocket! 

The best tape measure with length, height, and area.

Please note:
- you can measure in metric (meters, centimeters) or imperial units (feet, inches)
- the app measure distances horizontally and vertically!
- no need to remove the furniture from the room for measurements. The application determines the intersection between the floor and the target, even if it is hidden

This apps has infinite applications for everybody:
- Personal use
- Real estate professionals
- Construction workers can use it to quickly measure objects

HOW TO USE:
1. Take a picture of an object you want to measure next to any card.
2. Pro Ruler will automatically detect the card.
If you don't like the detection of an object you can readjust the reference rectangle.
3. Add lines or rectangles around an object you want to measure.

PRICE AND TERMS:

SmartRuler offers the following subscriptions options:

* 1 week: $2.99 (USD) after 3 days trial period
* 1 month: $9.99 (USD) after 3 days trial period
* 1 year: $19.99 (USD) after 3 days trial period

Privacy policy, terms, and conditions:

https://info-361.medium.com/361-privacy-policy-a2b6c19a20e1

https://info-361.medium.com/361-terms-conditions-cd55cf83b4bd

## Key features

- Measure length, height, and area
- Metric and imperial units
- Horizontal and vertical measurements
- Measure obscured objects
- Reference card for accuracy
- Adjustable reference rectangle

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Annual | $18.99 | per year |
| Premium Weekly | $7.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium one-time | $29.99 | one-time |


## What do users think of Pro Ruler?

Overall sentiment: mixed

**Pros**

- 👍 Easy to use and intuitive interface
- 📏 Accurate measurements for most use cases
- 🆓 Free version available with full functionality
- ⚡ Fast and responsive performance
- 🎯 Practical tool for everyday measuring needs
- 📱 Works well with camera-based measurement
- 🔄 Regular updates and support
- 🌍 Multi-language support

**Cons**

- 💳 Aggressive subscription pricing ($16-300 rubles/week)
- ⚠️ Misleading free trial claims (charges without warning)
- 🔍 Inaccurate measurements in some scenarios
- ❌ No clear cancellation or purchase options
- 🚫 Subscription not visible in app management
- 📵 Inverted camera display issues
- 💰 Charges applied immediately without proper disclosure
- 🎮 Confusing UI with unclear features

**Commonly reported bugs**

- Immediate charging without free trial period
- Camera inversion throughout app experience
- Inaccurate height measurements
- Starting point misalignment during measurement
- Subscription not appearing in device subscription settings
- Significant measurement errors (e.g., 25-foot barn measured as 4 feet)

**Most requested features**

- Clear and transparent pricing disclosure before purchase
- Proper free trial period (3 days as advertised)
- Easy subscription cancellation button
- Settings and information section in app
- Better camera calibration options
- Ad-free premium option
- Improved measurement accuracy for large objects

## Recent user reviews (10 of 127)

All indexed reviews: https://appshunter.io/ios/app/pro-ruler-measuring-tape/id1541122485/reviews.md

### 1/5 — Охуевшие

*2024-06-07, version 1.1.8*

Ни приложения ни превью 300 рублей в неделю, ахуели совсем? Ебанаты!

### 5/5 — This app is cool

*2024-05-16*

This could actually help me! It could help me recover lost objects, how far away I am from my house, schools, and much more! Thanks for creating this app. Whoever did this deserves a straight W

### 1/5 — Привет

*2023-09-19, version 1.1.8*

Неточное измерение

### 1/5 — なぜ審査を通ったのか分からない

*2022-11-19, version 1.1.8*

購入キャンセルボタンが見当たりません

### 1/5 — Сразу списали 1590 р. Где заявленные 3 дня бесплатно??? Программа не отображается в подписках!!

*2022-11-05, version 1.1.8*

Сразу списали 1590 р. Где заявленные 3 дня бесплатно??? Программа не отображается в подписках!!

### 1/5 — 気をつけてください！

*2022-09-06, version 1.1.8*

人気のアプリとアイコンが似てますが、これは違います！3日間お試しとありましたが、24時間経たないうちに2,080円請求されました！アップルカスタマーサービスで返金処理してもらいました。こんな不愉快な思い始めて！皆さんも気をつけて！

### 1/5 — Takes Money On Spot

*2022-06-20, version 1.1.8*

Takes your money on the spot. Don’t trust this app.

### 2/5 — Not free and no “paid only notice”

*2022-05-29, version 1.1.8*

Please tell people when your app isn’t free at all. Some of us can’t afford $16 for an app.

### 1/5 — useless app, inaccurate.

*2022-03-23, version 1.1.8*

inverted my camera throughout the entire experience, difficult to cooperate with and exceedingly inaccurate.

### 1/5 — なにこれ

*2021-12-24, version 1.1.8*

2000円の請求きました

## Frequently asked questions about Pro Ruler

### What can I measure with Pro Ruler?

Pro Ruler allows you to measure length, height, and area of objects using your phone's camera. It supports both horizontal and vertical measurements, and can even measure distances to objects that are partially hidden.

### What units of measurement does Pro Ruler support?

The app supports both metric units (meters, centimeters) and imperial units (feet, inches), giving you flexibility based on your needs.

### How accurate is Pro Ruler?

Accuracy is achieved by placing any card next to the object you want to measure. The app automatically detects the card as a reference. You can also readjust the reference rectangle if needed for better precision.

### Is Pro Ruler free to use?

Pro Ruler offers a 3-day free trial period for its subscription options. After the trial, you can choose from weekly, monthly, or yearly subscriptions to continue using the app's full features.

### Who would find Pro Ruler useful?

This app is useful for a wide range of users, including individuals for personal projects, real estate professionals for property assessments, and construction workers for quick on-site measurements.

## Version history (last 5 releases)

### 1.1.8 — 2021-10-22

Pro Ruler - Measuring is now part of Keles, we'll constantly work on delivering you the best measuring experience.

### 1.1.7 — 2021-10-06

Stability improvements

### 1.1.6 — 2021-09-12

Stability improvements

### 1.1.5 — 2021-08-23

Stability improvements

### 1.1.4 — 2021-08-14

Stability improvements

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All apps by KELES Dienstleistungen GmbH: https://appshunter.io/developer/1476916818

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*