PD+ : Easy Pupillary Distance

Name: PD+ : Easy Pupillary Distance
Rating: 4.7 (499 reviews)
Author: Zernike LLC

By: Zernike LLC

Measure PD & Seg Height

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Features & Capabilities

PD+ instantly measures pupillary distance (PD) from a high-resolution facial photo. It provides near and far PD in binocular and monocular modes, with no additional cost. For compatible devices, it also calculates fitting height for frames to ensure lenses are properly centered for optimal vision. Fitting Height is supported on devices with TrueDepth or LIDAR cameras.

Calculators included in PD+ cover Rx Transposition, Vertex Adjustment, Crossed Cylinders (over-refraction), Keratometry Conversion, Visual Acuity Scale, Estimated Visual Acuity, Minimum Blank Size (MBS), and Simple Magnifier and Spectacle Magnifications, enabling a comprehensive eyewear fitting workflow.

User Growth & Download Statistics

App Photography Education

By:

Zernike LLC

Rating:

4.70

(499) 1 new ratings

Version:

1.7.7 Last updated: 2026-03-04

Version code:

882993330

Creation date:

2022-08-23

Compatible devices:

Size:

76.09MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-02

Compare stats and ranking:

Ranking

# 78,529 ▲ 507

For Developers

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Contact the developer

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Developed by:

Zernike LLC

Apple Apps Store

https://apps.apple.com/us/app/pd-easy-pupillary-distance/id1560353383

User Reviews

Users largely praise the app for ease of use, quick PD checks, and features like voice instructions and seg height measurements. A recurring theme is unreliable accuracy: many reviews report inconsistent results across attempts and significant deviation from optician measurements (off by 4–6 mm, 20% off). Several caution against using it for prescriptions, and a few report crashes or inaccurate frame-size guidance. Overall, it’s convenient but not dependable for professional eyewear prescriptions.

Pros

Accurate and precise PD measurements.
User-friendly and easy to use interface.
Convenient for pocket on-the-go PD checks.
Voice-guided instructions for measuring.
Includes seg height measurement.

Cons

PD results are often inaccurate and vary across attempts.
Not reliable for prescription decisions; should be verified by an optician.
Results frequently do not match optician’s measurements.
App stability issues (crashes).
Frame size recommendations can be inaccurate.

Recent reviews

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

by ns*****, 2026-06-14

Easy and quick way for measuring. Really good

by Ke*****, 2026-06-09

I remember at shop they measured 62 for my pd and the app is showing 56? lol pd don’t change over a year so user beware. Download more apps to get a consistent trend.