# TouchCaliper Ruler & Caliper

> On-screen ruler & caliper

Canonical page: [https://chrome-stats.com/d/id6777427980](https://chrome-stats.com/d/id6777427980)

## Overview

- **ID:** `id6777427980`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Shuhei Yamamoto
- **Category:** Utilities
- **Version:** 1.2.3
- **Last updated:** 2026-09-22
- **First published:** 2026-06-09
- **Size:** 1.50 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/touchcaliper-ruler-caliper/id6777427980)
- **Privacy policy:** [https://shuheilocale.github.io/touchcaliper/privacy.html](https://shuheilocale.github.io/touchcaliper/privacy.html)

## Description

Turn your iPhone into a real-size ruler. Lay an object on the screen, pinch it with two bars, read the size in millimetres.

Turn your iPhone into a real-size ruler and caliper. When you don't have a ruler handy, just lay a small object on the screen and pinch it between the two bars - the size is shown in millimetres, big and clear.

Great for screws, buttons, batteries, SD cards, sticky notes and other small things.

Features
- Real-size mm grid (horizontal & vertical)
- Two measuring bars with a big millimetre readout
- Switch between width and height
- Auto-scaled from your device's screen; if it's ever off, calibrate in one tap against a credit card or coin

How to use
1. Tap Measure
2. Place an object on the screen
3. Align the two bars to its edges
4. Read the big number

Pro (one-time purchase)
- Exact 0.1 mm readout (the free version reads to the whole millimetre)
- Inches & fractional inches (to the nearest 1/64, shown together with cm)
- Share / save the result as an image
- Measurement history with labels
The grid, calibration and whole-millimetre measuring are always free.

Notes
- Only objects that fit on the screen can be measured.
- Measures flat dimensions (width, diameter, length).
- Objects rest directly on the screen - take care not to scratch it.

## Rankings

- #1,430,469 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6777427980)