About
EyeMeasure is a free iOS app developed by Bonlook Inc that leverages the TrueDepth 3D camera system found in iPhone X and newer models to deliver highly accurate optical measurements from the comfort of home. The app measures two critical prescription metrics: Pupillary Distance (PD) — the distance between your pupils — for both near and far focal lengths, and Segment Height (SH), which is essential for ordering progressive lenses online. Using advanced computer vision and 3D scanning technology, EyeMeasure achieves accuracy up to 0.5mm, rivaling measurements taken by licensed opticians. No additional accessories are needed — no credit cards as rulers, no mirrors, no tape measures. The app also allows users to share their measurements directly with online eyewear retailers for further analysis. With over 22,000 App Store ratings averaging 4.8 stars, EyeMeasure is trusted by consumers worldwide. It's especially popular with first-time online glasses buyers, VR enthusiasts who need precise IPD settings for headsets like the Oculus Rift or Meta Quest, and anyone seeking the convenience of self-measuring at home. The app is free to use and designed for iPad as well, making it accessible across Apple devices. It is also compatible with home try-on eyewear programs, helping users bridge the gap between online shopping and optical precision.
Key Features
- Instant Pupillary Distance (IPD) Measurement: Measures near and far PD in seconds using the iPhone's TrueDepth 3D camera, accurate to within 0.5mm.
- Segment Height (SH) Measurement: Captures Segment Height data required for ordering progressive lenses online, eliminating the need for an in-person optician visit.
- No Accessories Required: Works without mirrors, credit cards, or tape measures — just point your iPhone at your face and the app does the rest.
- Share Measurements with Retailers: Easily export and share your 3D scan and measurement data directly with online eyewear retailers for further analysis.
- High Accuracy 3D Scanning: Leverages Apple's TrueDepth sensor array for sub-millimeter precision comparable to professional optician measurements.
Use Cases
- Measuring pupillary distance at home before ordering prescription glasses online for the first time.
- Obtaining Segment Height measurements needed for progressive or bifocal lens orders without visiting an optician.
- Calibrating the IPD setting on VR headsets such as Oculus Rift S or Meta Quest for optimal visual clarity.
- Sharing precise 3D optical measurements with online eyewear retailers as part of a home try-on or custom fitting service.
- Quickly verifying existing prescription measurements before reordering glasses from an online retailer.
Pros
- Highly Accurate: Achieves up to 0.5mm accuracy using iPhone's built-in 3D sensors, making online prescription glasses orders much more reliable.
- Completely Free: Available at no cost on the App Store with no paywalls or in-app purchases required to access core measurement features.
- No Special Equipment Needed: Requires only an iPhone X or newer — no mirrors, rulers, or external devices — making it highly convenient for home use.
- Excellent User Ratings: Rated 4.8 out of 5 stars by over 22,000 users, reflecting consistently reliable performance and user satisfaction.
Cons
- Requires iPhone X or Newer: The app depends on Apple's TrueDepth 3D camera system, so it is not compatible with older iPhone models or Android devices.
- Distance Sensitivity Can Confuse Users: The phone must be held at least a foot away from the face to work correctly; this is not prominently communicated in-app, leading to frustration for some users.
- Instructions Hard to Re-access: The onboarding instructions disappear quickly and there is no easy way to recall them, which can leave new users uncertain about correct usage.
Frequently Asked Questions
What is Pupillary Distance (PD) and why do I need it?
Pupillary Distance is the measurement between the centers of your two pupils. It is a critical number required for ordering prescription eyeglasses online so that the optical centers of the lenses align correctly with your eyes.
Which iPhone models are compatible with EyeMeasure?
EyeMeasure requires an iPhone X or any newer iPhone model that includes Apple's TrueDepth 3D camera system. It is not compatible with older iPhones or Android devices.
How accurate is EyeMeasure?
EyeMeasure is accurate to within 0.5mm, which is comparable to measurements taken by professional opticians in-store.
Can I use EyeMeasure for VR headsets?
Yes. Many VR users use EyeMeasure to determine their IPD for headsets like the Oculus Rift S or Meta Quest series, which require an accurate PD setting for optimal display clarity.
Is EyeMeasure free to use?
Yes, EyeMeasure is completely free to download and use on the App Store. There are no in-app purchases required to measure your PD or Segment Height.
