PD+ : Easy Pupillary Distance

PD+ : Easy Pupillary Distance

Measure PD & Seg Height

557 ratings
24 reviews
Free
In-App Purchases

Details

Released
August 23, 2022
Updated
July 28, 2026

Features

PD+ : Easy Pupillary Distance video #1 for iPhone
PD+ : Easy Pupillary Distance screenshot #2 for iPhone
PD+ : Easy Pupillary Distance screenshot #3 for iPhone
PD+ : Easy Pupillary Distance screenshot #4 for iPhone
PD+ : Easy Pupillary Distance screenshot #5 for iPhone
iphone
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About

This app measures pupillary distance (PD) and fitting heights using your device's camera. It offers various optical calculators for lens adjustments and acuity estimations. Accurate measurements are crucial for optimal lens centering and multifocal lens positioning.

✓Pupillary distance measurement
✓Fitting height measurement
✓Binocular and monocular PD
✓Rx transposition calculator
✓Vertex adjustment calculator
✓Crossed cylinders calculator
✓Minimum blank size calculator
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What users say about PD+

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What's New in PD+

1.8.0

July 28, 2026

Measure your pupillary distance instantly with our App Clip—no full app download required. Launch it from a supported link or QR code.

1

Subscriptions & In-App Purchases

$7.99

Lifetime Subscription

A lifetime premium subscription.

User reviews

Bait & Switch paywall for a broken app ⭐️

This app is incredibly misleading and functionally broken. I downloaded this because I’m trying to order my very first pair of glasses. I spent an hour perfectly lit by a ring light, adjusting the phone's position back and forth because it kept giving me ridiculous strings of numbers like 5286, 6491, and 7735. The consistent error message at the top stating “fail” with the words "frame size" below it. What was I to think other than I’m out of frame? I’m not positioned correctly after spending an hour plus trying. I was fed up.

Finally, I saw an option to upload a photo in the settings. But when I went to use it, the app forced me to pay a $7.99 "lifetime membership" fee for this "advanced feature." I begrudgingly paid it. I submitted my perfectly lit photo, and the app instantly rejected it because I wasn't wearing glasses. The whole point of the app is to get measurements so you can buy my FIRST pair of glasses, and their own promotional images literally show a little girl taking her PD without them! I don't own glasses yet!

I deleted the app. Waited for the charge to clear. Then I contacted Apple, and they denied my refund, saying the purchase was ineligible for a refund. “This decision is final." Not eligible? Even though the app is completely unusable for its advertised purpose. Absolutely awful experience. Save your money and do not download this.
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Great app

Good great grand wonderful

Unstable measure

Face size went small, large, small again and seems to be very camera distance sensitive. This instability casts doubt on the overall measurement ability

PD

Easy and quick way for measuring. Really good

Mr C

Best PD app yet, very clever.

User experience

🐞

Reported Bugs

5 issues

Face size unstable

Bug

Camera distance sensitive

Bug

App keeps crashing

Bug

PD feature doesn't work on iPad

Bug

Page stays black on iPad

Bug
✨

Requested Features

1 request

Can this app measure the PD for progressive lenses for right and left eyes?

Feature

FAQ

What does this app do?

This app measures your pupillary distance (PD) and fitting heights for eyeglass frames using your device's camera. It also includes several useful optical calculators for lens adjustments and visual acuity estimations.

How accurate are the PD measurements?

Measurement accuracy is guaranteed to be the highest achievable by the capability of your device's camera system. Both far and near PDs, binocular and monocular, are available at no cost.

What is fitting height and how is it measured?

Fitting height is measured for the frames you currently have on. Accurate fitting height measurements are needed to ensure lenses are properly centered for optimal viewing clarity and to position segments for multifocal lenses. This feature is supported on devices with TrueDepth or LIDAR camera systems.

What optical calculators are included?

The app includes calculators for Rx Transposition, Vertex Adjustment, Crossed Cylinders (over-refraction), Keratometry Conversion, Visual Acuity Scale, Estimated visual acuity, Minimum Blank Size (MBS), and Magnifications.

Is this app free to use?

The core features, including pupillary distance measurements and several optical calculators, are available at no cost. However, some advanced features or functionalities may be available through in-app purchases.