Digital Ruler Pro

cm & inch measuring tool

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Turn your iPhone into a precise ruler. Measure anytime, anywhere — cm & inch, 2D measurement, calibration & history. Turn your iPhone into a precise digital ruler. Measure any object in seconds — in centimeters or inches, with no internet connection required. KEY FEATURES • Linear Ruler — accurate cm and inch measurement with a draggable pointer • 2D Measurement — measure length and width at the same time • Device Calibration — calibrate with a credit card, ID card or A4 paper so results stay reliable on any screen • Measurement History — save, review and manage every reading • Lock Mode — freeze the current reading and take a clean screenshot HOW IT WORKS 1. Calibrate once with a standard object (a credit card works great) 2. Place the object you want to measure on the screen 3. Drag the pointer to the edge and read the result instantly DIGITAL RULER PRO Unlock everything with a single one-time purchase — no subscription, no auto-renewal: • Additional calibration objects (ID card, A4 paper) • Unlimited measurement history • Advanced export with watermark control • Enhanced sharing options Already purchased Pro? Tap "Restore Purchases" on the upgrade screen. PERFECT FOR Home DIY, crafts, sewing, education, furniture checks, package sizing and professional field work — a ruler is always in your pocket. ACCURACY TIP A screen ruler is most accurate after calibration. For best results, calibrate once per device and keep the phone flat and steady while reading. PRIVACY All measurements and settings are stored locally on your device. We do not collect, transmit or share your personal data. No analytics, no ads, no tracking. No internet connection required. Privacy Policy: https://digitalrulerprivacypolicy.vercel.app/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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The developer, 学友 刘, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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    Information

    Seller
    学友 刘
    Size
    5.9 MB
    Category
    Utilities
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • iPad
      Requires iPadOS 16.0 or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 9 more
    • English, Arabic, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 richy4552
  • Developer Website
  • Privacy Policy

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