RulerApp

Hold it up. Measure it.

Free

Hold anything up to your screen and read the size instantly. Accurate, no calibration needed. cm, inches, or both. For iPhone and iPad. Turn your iPhone or iPad into a precise on-screen ruler. Hold any small object against the screen and read its exact size — no tape measure, no guesswork. FEATURES • Accurate out of the box — no manual calibration. Ruler scale is calculated from your exact device's screen density. • Switch between centimeters, inches, or both at once. • Drag to drop a crosshair anywhere and read precise X/Y measurements from the corner. • Toggle a grid overlay (off, major lines, or major + minor) for finer alignment. • iPad extras: hover measurements with a trackpad or Apple Pencil, and keyboard shortcuts (U for units, G for grid) with a hardware keyboard. Simple, fast, and always in your pocket.

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

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Mathieu Rancourt
    Size
    4 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 14.0 or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Mathieu Rancourt
  • Privacy Policy

    • More by Mathieu Rancourt

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