# Millimeter Pro - screen ruler — best tape measure in inch mm

> Device touchscreen used as a digital ruler and tape measure for various measurements. (iPhone/iPad app by VisTech.Projects LLC.)

- Source: https://appshunter.io/ios/app/millimeter-pro-screen-ruler/id631810777 (this page in markdown: same URL + `.md`)
- Developer: [VisTech.Projects LLC](https://appshunter.io/developer/620969851)
- Category: Utilities, Productivity
- Price: $3.99
- Rating: 4.40/5 from 108 App Store ratings · 38 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 24 MB
- Languages: American English
- Released: 2013-04-11
- Data updated: 2026-08-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/millimeter-pro-screen-ruler/id631810777/reviews.md

## What is Millimeter Pro?

App blog:  https://goo.gl/da6LdZ

Millimeter Pro is an easy-to-use and helpful measurement tool for iPhone or iPad. It uses a touch screen as a ruler or tape measure to make quick measurements, split objects into equal parts, measure object ratio (W/H), measure area, estimate diameter and angles, and split circular objects into equal parts. 

Place an object on the screen and simply touch and move rulers to measure it. 
You can measure in different units: MILLIMETERS or INCHES. 

Features: 
- mm and inch units 
- 2D measurements: vertical and horizontal rulers 
- area calculation 
- ratio calculation (W/H) 
- split linear and circular objects into equal parts 
- shows the length and angle of each part 
- disable/enable touch screen (freeze feature) 
- diameter or radius estimation 
- angle measure with Protractor / Goniometer mode
- Thread pitch gauge for TPI and pitch size measurements 


Use this app in different areas to measure small objects that fit within your phone or tablet screen: jewelry, rings, stones, gem, beads, screws, bolts, buttons, nuts, knitting needles, knitting patterns, washers, insects, mosaic tile, hooks, frame wrap angle, etc.

Enjoy the app and Thank you for your interest and support! 
VisTech.Projects Team

## Key features

- Touchscreen ruler and tape measure
- Measure length, area, diameter, and angles
- Split objects into equal parts
- Supports millimeters and inches
- Estimate radius
- Thread pitch gauge

## Recent user reviews (10 of 38)

All indexed reviews: https://appshunter.io/ios/app/millimeter-pro-screen-ruler/id631810777/reviews.md

### 5/5 — Super

*2026-01-26*

Danke für dieses schöne einfache Tool. Genau was ich gesucht habe, einfach nur ein Zentimetermaß, einfach zu handhaben

### 2/5 — Calibration off

*2025-11-19*

This app used to be amazing but suddenly the calibration is very off so it’s completely inaccurate.

**Developer response:** You can calibrate your device from the menu with a standard ruler if needed. Let us know if you need help with it support@vistechprojects.com

### 5/5 — Lock is super unintuitive

*2025-08-07*

The app seems broken and that the only way you can change any angle / dimension / etc is to type an exact number. 

You need to do *something* if the user is tapping and dragging around. Even if it’s flashing the lock icon. Or default the lock to off. I get it finally, but also the fact that orientation is locked makes it really confusing what the lock does.


Also, when you set a diameter and then go back to set it again, the value has mysteriously halved.

**Developer response:** Thank you for your feedback and issue report. Working on fixing the diameter/radius, but the rest is not clear. Could you please contact support@vistechprojects.com with more details about your device and about the problem you have. Lock - just locks the rulers (turn off touch). Thank you!

### 5/5 — iPadmini A17pro结果异常

*2025-06-28*

iPad mini A17pro上面直尺的一毫米明显更小，大概是实际上的不到零点五毫米，急需解决问题

### 4/5 — Not much user friendly

*2024-09-12*

Not user friendly. I took me time to understand on how to use it.  But very good measuring stuff equipment.

**Developer response:** Thanks for your feedback!

### 5/5 — Excellent tool!

*2024-01-10*

Thank you very much!

**Developer response:** Glad you like it. Thank you so much for your support!

### 5/5 — 好

*2023-01-30*

好

### 4/5 — Not accurate on iPad

*2022-02-12, version 2.0.11*

The app is fine on the iPhone 13 Pro Max. Very nice and full featured. But the ruler is off 1/16 inch on an iPad Pro 12.9 2021 and 1/8 inch on an iPad Mini 6. This is downloaded as of 2/12/22.

### 4/5 — Very nice app

*2022-01-21*

Could be better if there is another way to increase/decrease values other than touch screen as I always wast my time trying to got the correct measure by touch screen

### 5/5 — Excellent!!

*2021-01-22*

I love this app!!

**Developer response:** Thank you very much for your feedback and support!

## Frequently asked questions about Millimeter Pro

### What does Millimeter Pro do?

Millimeter Pro turns your iPhone or iPad into a precise measuring tool. It uses the touchscreen to act as a ruler or tape measure, allowing you to perform various measurements like length, area, diameter, and angles.

### What are the key features of this measurement app?

Key features include 2D measurements with vertical and horizontal rulers, area and ratio calculations, the ability to split linear and circular objects into equal parts, diameter or radius estimation, angle measurement with protractor mode, and a thread pitch gauge.

### Is this app free to use?

Yes, the application is available for free. It does not have in-app purchases or advertisements, meaning you can use all its features without any cost.

### What devices is Millimeter Pro compatible with?

The app is designed for use on iPhone or iPad devices. It leverages the touchscreen capabilities of these devices to function as a measuring tool.

### What are some common use cases for this app?

This app is useful for measuring small objects that fit on your screen, such as jewelry, beads, screws, buttons, knitting needles, and mosaic tiles. It's also helpful for estimating ratios, splitting objects, and measuring angles.

## Version history (last 5 releases)

### 2.0.16 — 2024-09-27

new devices, bug fixes and improvements

### 2.0.15 — 2024-01-10

Bug fixes and stability improvements

### 2.0.13 — 2023-02-26

Bug fixes and stability improvements

### 2.0.12 — 2022-04-29

bug fixes and stability improvements

### 2.0.11 — 2021-10-19

bug fixes and stability improvements

## Apps similar to Millimeter Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Tape Measure & Ruler Арр](https://appshunter.io/ios/app/tape-measure-and-ruler/id1453537222) | 4.2 (4,291) | Free | Utilities |
| [Measure Tools: AR Room Planner](https://appshunter.io/ios/app/measure-tools-ar-room-planner/id1299651802) | 4.5 (143) | Free | Utilities |
| [Flying Ruler: 3D Tape Measure](https://appshunter.io/ios/app/flying-ruler-3d-tape-measure/id667579844) | 4.1 (187) | $1.99 | Utilities |
| [Measurement app for iPhone](https://appshunter.io/ios/app/measurement-app-for-iphone/id1586541589) | 4.8 (108) | Free | Utilities |
| [Tape Measure+ AR Digital Ruler](https://appshunter.io/ios/app/tape-measure-plus-ar-digital-ruler/id1667165565) | 4.4 (931) | Free | Utilities |
| [Measuring Tape+ Measure AR app](https://appshunter.io/ios/app/measuring-tape-plus-measure-ar-app/id6444381350) | 4.5 (2,022) | Free | Utilities |

## More apps by VisTech.Projects LLC

- [Unit Converter \| Converter4U](https://appshunter.io/ios/app/unit-converter-converter4u/id620969788)
- [Camera Measure - PartoMeter](https://appshunter.io/ios/app/camera-measure-partometer/id689675004)
- [Planimeter GPS Area Measure](https://appshunter.io/ios/app/planimeter-gps-area-measure/id896375350)
- [SolarMeter sun energy planner](https://appshunter.io/ios/app/solarmeter-sun-energy-planner/id1047880363)
- [Partometer3D measure on photo](https://appshunter.io/ios/app/partometer3d-measure-on-photo/id1062639959)

All apps by VisTech.Projects LLC: https://appshunter.io/developer/620969851

## Related topics

[ruler millimeters](https://appshunter.io/ios/topics/ruler-millimeters) · [mm ruler screen](https://appshunter.io/ios/topics/mm-ruler-screen) · [area ruler](https://appshunter.io/ios/topics/area-ruler)

---

*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 2026-08-28.*