# Caliper&Ruler — Measure & Calibrate with Ease.

> Digital caliper app for accurate on-screen measurements in inches and millimeters. (iPhone/iPad app by Jun Yamabe.)

- Source: https://appshunter.io/ios/app/caliper-and-ruler/id6749051381 (this page in markdown: same URL + `.md`)
- Developer: [Jun Yamabe](https://appshunter.io/developer/1732682049)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 18.4 · 5 MB
- Languages: American English, Arabic, Bangla, Filipino, German (Germany), Greek, Hebrew, Hindi, Indonesian, Japanese and 10 more
- Released: 2025-07-28
- Data updated: 2026-08-13
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/caliper-and-ruler/id6749051381/reviews.md

## What is Caliper&Ruler?

Unlock Precision – Your Essential On-Screen Measurement Tool!

Turn your iPhone or iPad into a versatile digital caliper. Measure objects accurately in inches and millimeters with an intuitive and easy-to-use interface.

Whether you're a DIY enthusiast, student, designer, or professional, Caliper provides precise measurements wherever you need them.

Key Features:

- Dual Measurement Units: Easily measure in both inches and millimeters.
- Intuitive Drag-and-Measure: Simply drag the slider to measure objects instantly.
- Accurate Calibration: Calibrate your screen using everyday objects such as credit cards, AA batteries, rulers, or CDs/DVDs/Blu-ray discs.
- Custom Calibration: Use any object with a known length for precise adjustment.
- Universal Compatibility: Designed for iPhone (landscape only) and iPad (all orientations).

Download Caliper and experience accurate measurements anytime, anywhere.

## Key features

- Dual measurement units (inches/millimeters)
- Intuitive drag-and-measure interface
- Accurate screen calibration
- Custom calibration options
- Universal device compatibility

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |



## Frequently asked questions about Caliper&Ruler

### What is Caliper&Ruler?

Caliper&Ruler is a utility app that turns your iPhone or iPad into a digital caliper for precise on-screen measurements in inches and millimeters.

### How accurate is Caliper&Ruler?

The app offers accurate measurements and includes calibration features using everyday objects like credit cards or rulers to ensure precision on your device's screen.

### Does Caliper&Ruler have ads?

No, Caliper&Ruler is ad-free, providing an uninterrupted measurement experience for users.

### What devices is Caliper&Ruler compatible with?

Caliper&Ruler is designed for iPhone (landscape only) and iPad (all orientations), offering universal compatibility for Apple users.

### How do I calibrate Caliper&Ruler?

You can calibrate Caliper&Ruler using common objects with known lengths, such as credit cards, AA batteries, or CDs/DVDs/Blu-ray discs, for precise adjustment.

### What measurement units does Caliper&Ruler support?

Caliper&Ruler allows you to easily measure objects in both inches and millimeters, providing flexibility for various needs.

### When was Caliper&Ruler last updated?

The latest version, 2.1.0, was released on August 11, 2026, indicating recent development and support.

### What is the age rating for Caliper&Ruler?

Caliper&Ruler has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 2.1.0 — 2026-08-11

• Added the Thanks feature, allowing you to support app development.
• Improved calibration, making it easier to adjust the screen size using everyday objects such as credit cards, rulers, AA batteries, and CDs.

### 2.0.0 — 2025-11-06

Added an option to remove ads.
You can now hide banner ads via in-app purchase.

### 1.0.2 — 2025-10-07

- Added localization support for Tagalog (Filipino), Hebrew (Israel), and several Indian languages (Tamil, Telugu, Bengali), as well as Greek and Slovak.
- Updated the app name to display correctly in these newly supported languages on your device.

### 1.0.1 — 2025-09-18

We’ve added localization support for more languages!
Now the app is easier to use around the world with native translations.

Newly supported languages:
- Turkish
- Spanish
- Thai
- Portuguese (Brazil)
- Malay
- Japanese
- Indonesian
- Hindi
- German
- Chinese (Simplified & Traditional)
- Arabic

Enjoy a smoother experience in your own language!

### 1.0 — 2025-07-28

No release notes.

## Apps similar to Caliper&Ruler

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Super Ruler](https://appshunter.io/ios/app/super-ruler/id1182697242) | — | Free | Utilities |
| [Ruler •](https://appshunter.io/ios/app/ruler/id1555214809) | 4.2 (399) | Free | Utilities |
| [Ring Sizer & Tape Measure](https://appshunter.io/ios/app/ring-sizer-and-tape-measure/id1668325395) | 4.2 (34) | Free | Utilities |
| [Measuring Tape : AR Ruler App](https://appshunter.io/ios/app/measuring-tape-ar-ruler-app/id6744004874) | 4.2 (25) | Free | Utilities |
| [Level Tool · Angle Finder](https://appshunter.io/ios/app/level-tool-angle-finder/id6747709615) | 4.4 (233) | Free | Utilities |
| [Ring Sizer: AR Ruler & Table](https://appshunter.io/ios/app/ring-sizer-ar-ruler-and-table/id6473256428) | 4.6 (51) | Free | Utilities |

## More apps by Jun Yamabe

- [Smart Protractor](https://appshunter.io/ios/app/smart-protractor/id6746047543)
- [Color Lens – Color Assist](https://appshunter.io/ios/app/color-lens-color-assist/id6746681077)
- [Japanese Era](https://appshunter.io/ios/app/japanese-era/id6747539110)
- [Screw Pitch Gauge](https://appshunter.io/ios/app/screw-pitch-gauge/id6749295527)
- [World Flags & Facts](https://appshunter.io/ios/app/world-flags-and-facts/id6751833800)

All apps by Jun Yamabe: https://appshunter.io/developer/1732682049

## Related topics

[mm ruler](https://appshunter.io/ios/topics/mm-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 2026-08-13.*