Pupillary Distance Ruler

Measure eyes with TrueDepth

Free · In‑App Purchases · Designed for iPad

Measure your pupillary distance (PD/IPD) with TrueDepth sensors: accurate, private, and perfect for buying online glasses Measure your interpupillary distance (IPD / PD) in seconds using the same advanced TrueDepth sensors that power Face ID. No rulers, no mirrors, no accounts, no guesswork. Just accurate results you can trust: perfect for ordering glasses online, setting up VR headsets, or keeping track of your family’s vision. Why Choose This App? * Advanced Sensor Accuracy * Uses the iPhone’s TrueDepth camera to calculate your eye centers in 3D space, far more precise than a ruler and mirror. * Safe and Private: Your face never leaves your device. No cloud, no servers, no tracking. The app uses Apple’s secure ARKit APIs and stores only the results you choose to keep. * Simple and Fast: Hold your iPhone in front of you, follow the on-screen guide, and get your PD in less than 10 seconds. Free Features * Quick PD measurement (distance PD) * Live camera guidance with stability detection * One-tap result in millimeters * Educational tips on why PD matters for glasses and VR Pro Features (In-App Purchase) * Advanced Accuracy Mode: more samples, smarter outlier rejection, and a confidence interval with every result * Monocular PD: measure left and right eyes separately — critical for VR headset alignment and premium glasses * History & Profiles: save multiple results over time, track growth in kids, or measure friends and family Export & Share: generate a professional PDF report or share your results instantly with your optician Who It’s For * Anyone ordering glasses online who doesn’t know their PD * VR enthusiasts looking for the sharpest, most comfortable headset fit * Parents who want to measure and track their children’s PD as they grow * Optics hobbyists and tech lovers who want to see what the iPhone’s sensors can really do Privacy First * We believe your face belongs to you. * 100% on-device processing * No photos, meshes, or videos are stored * No logins or accounts * Only the numerical results you choose to save remain on your device Why Pay? * Opticians may charge $20–$40 for a PD measurement. This app gives you accurate, repeatable results for a fraction of the cost: anytime, anywhere. Download today and see your eyes in a whole new way. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

  • 5.0
    out of 5
    1 Ratings

The developer, Krueger Systems, Inc., 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

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

    • Seller
      • Krueger Systems, Inc.
    • Size
      • 1.8 MB
    • Category
      • Health & Fitness
    • Compatibility
      Requires iOS 17.6 or later.
      • iPhone
        Requires iOS 17.6 or later.
        • ⁨iPhone 6S⁩
        • ⁨iPhone 6S Plus⁩
        • ⁨iPhone SE (1st generation)⁩
        • ⁨iPhone 7⁩
        • ⁨iPhone 7 Plus⁩
        • ⁨iPhone 8⁩
        • ⁨iPhone 8 Plus⁩
        • ⁨iPhone X⁩
        • ⁨iPhone XS⁩
        • ⁨iPhone XS Max⁩
        • ⁨iPhone XR⁩
        • ⁨iPhone 11⁩
        • ⁨iPhone 11 Pro⁩
        • ⁨iPhone 11 Pro Max⁩
        • ⁨iPhone SE (2nd generation)⁩
        • ⁨iPhone 12 mini⁩
        • ⁨iPhone 12⁩
        • ⁨iPhone 12 Pro⁩
        • ⁨iPhone 12 Pro Max⁩
        • ⁨iPhone 13 Pro⁩
        • ⁨iPhone 13 Pro Max⁩
        • ⁨iPhone 13 mini⁩
        • ⁨iPhone 13⁩
        • ⁨iPhone SE (3rd generation)⁩
        • ⁨iPhone 14⁩
        • ⁨iPhone 14 Plus⁩
        • ⁨iPhone 14 Pro⁩
        • ⁨iPhone 14 Pro Max⁩
        • ⁨iPhone 15⁩
        • ⁨iPhone 15 Plus⁩
        • ⁨iPhone 15 Pro⁩
        • ⁨iPhone 15 Pro Max⁩
        • ⁨iPhone 16⁩
        • ⁨iPhone 16 Plus⁩
        • ⁨iPhone 16 Pro⁩
        • ⁨iPhone 16 Pro Max⁩
        • ⁨iPhone 16e⁩
        • ⁨iPhone 17 Pro⁩
        • ⁨iPhone 17 Pro Max⁩
        • ⁨iPhone 17⁩
        • ⁨iPhone Air⁩
      • iPad
        Requires iPadOS 17.6 or later.
        • ⁨iPad Pro (12.9‑inch)⁩
        • ⁨iPad Pro (12.9‑inch) Wi-Fi + Cellular⁩
        • ⁨iPad Pro (9.7‑inch)⁩
        • ⁨iPad Pro (9.7‑inch) Wi‑Fi + Cellular⁩
        • ⁨iPad (5th generation)⁩
        • ⁨iPad (5th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (12.9‑inch) (2nd generation)⁩
        • ⁨iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (10.5‑inch)⁩
        • ⁨iPad Pro (10.5‑inch) Wi‑Fi + Cellular⁩
        • ⁨iPad (6th generation)⁩
        • ⁨iPad (6th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (11‑inch)⁩
        • ⁨iPad Pro (11‑inch) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (12.9‑inch) (3rd generation)⁩
        • ⁨iPad Pro (12.9‑inch) (3rd generation) Wi‑Fi + Cellular⁩
        • ⁨iPad mini (5th generation)⁩
        • ⁨iPad mini (5th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Air (3rd generation)⁩
        • ⁨iPad Air (3rd generation) Wi‑Fi + Cellular⁩
        • ⁨iPad (7th generation)⁩
        • ⁨iPad (7th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (11‑inch) (2nd generation)⁩
        • ⁨iPad Pro (11‑inch) (2nd generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (12.9‑inch) (4th generation)⁩
        • ⁨iPad Pro (12.9‑inch) (4th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Air (4th generation)⁩
        • ⁨iPad Air (4th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad (8th generation)⁩
        • ⁨iPad (8th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (11-inch) (3rd generation)⁩
        • ⁨iPad Pro (11-inch) (3rd generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (12.9-inch) (5th generation)⁩
        • ⁨iPad Pro (12.9-inch) (5th generation) Wi-Fi + Cellular⁩
        • ⁨iPad mini (6th generation)⁩
        • ⁨iPad mini (6th generation) Wi-Fi + Cellular⁩
        • ⁨iPad (9th generation)⁩
        • ⁨iPad (9th generation) Wi-Fi + Cellular⁩
        • ⁨iPad Air (5th generation)⁩
        • ⁨iPad Air (5th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad (10th generation)⁩
        • ⁨iPad (10th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (11‑inch) (4th generation)⁩
        • ⁨iPad Pro (11‑inch) (4th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Pro (12.9‑inch) (6th generation)⁩
        • ⁨iPad Pro (12.9‑inch) (6th generation) Wi‑Fi + Cellular⁩
        • ⁨iPad Air 11-inch (M2)⁩
        • ⁨iPad Air 11-inch (M2) Wi-Fi + Cellular⁩
        • ⁨iPad Air 13-inch (M2)⁩
        • ⁨iPad Air 13-inch (M2) Wi-Fi + Cellular⁩
        • ⁨iPad Pro 11-inch (M4)⁩
        • ⁨iPad Pro 11-inch (M4) Wi-Fi + Cellular⁩
        • ⁨iPad Pro 13-inch (M4)⁩
        • ⁨iPad Pro 13-inch (M4) Wi-Fi + Cellular⁩
        • ⁨iPad mini (A17 Pro)⁩
        • ⁨iPad mini (A17 Pro) Wi-Fi + Cellular⁩
        • ⁨iPad (A16)⁩
        • ⁨iPad (A16) Wi-Fi + Cellular⁩
        • ⁨iPad Air 11-inch (M3)⁩
        • ⁨iPad Air 11-inch (M3) Wi-Fi + Cellular⁩
        • ⁨iPad Air 13-inch (M3)⁩
        • ⁨iPad Air 13-inch (M3) Wi-Fi + Cellular⁩
        • ⁨iPad Pro 11-inch (M5)⁩
        • ⁨iPad Pro 11-inch (M5) Wi-Fi + Cellular⁩
        • ⁨iPad Pro 13-inch (M5)⁩
        • ⁨iPad Pro 13-inch (M5) Wi-Fi + Cellular⁩
      • Mac
        Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    • Languages
      • English
    • Age Rating
      4+
    • In-App Purchases
      Yes
      • Pro Forever $9.99
      • Pro Yearly Subscription $5.99
    • Copyright
      • © 2025 Krueger Systems, Inc.