PDExact vs TrueDim

Ordering glasses online and the form asks for your PD? PDExact measures your pupillary distance from a photo, using any bank or credit card as the ruler. Take a selfie with the front camera (or pick a photo) while holding a standard card flat against your forehead. Then place the handles: the two ends of the card, the centre of each pupil, and your nose bridge. PDExact converts pixels to millimeters from the card's known 85.60 mm length and shows your PD and both mono PDs live. • PHOTO + CARD SCALE — the standard ID-1 card size (a bank or credit card) sets the scale right in the photo, so no screen calibration is needed. • AUTO-PLACED PUPILS — on-device face detection pre-places the pupil and nose-bridge handles when it can; you can always drag them. • MAGNIFIER — hold any handle to see a zoomed view with a crosshair for precise placement. • REAL MONO PD — right and left mono PD are measured from your nose bridge to each pupil, not just half of the total. • RESULT PDF — a one-page PDF with your PD, both mono values, the date and the disclaimer, ready to share or save to Files, in the app's language. For the best reading, keep the card flat against your forehead, face the camera straight on and hold your head level. Not a medical device: PDExact is a shopping aid only. It does not diagnose conditions, replace an eye exam, or provide a prescription. For clinical PD or medical advice, see an eye care professional. Everything stays on your iPhone. Nothing is uploaded and no account is needed. Measuring is free; saving a result PDF includes 3 free exports. A one-time $4.99 purchase unlocks unlimited result PDFs. No subscription, no ads. Questions: overlapmarr@gmail.com

TrueDim is the measurement-grade PDF markup app for people who work from drawings. REQUIRES A FETZER WORK ACCOUNT TrueDim is the field and shop tool for Fetzer Architectural Woodwork. Signing in with a Fetzer work email is required to use the app. Accounts are issued by the company — there is no public sign-up, and the app cannot be used without one. Most PDF tools treat a sheet like a page of text. TrueDim treats it like what it is — linework at a scale, with a job riding on the numbers. DIMENSIONS WITH A SPINE • Witness legs with per-leg trims, five cap styles, and endpoint tags (VIF, AFF, CL and friends) • Multi-reading dimensions with a live readings table • Stable D-numbers and a dimension schedule that jumps to any dim on the sheet VERIFY AGAINST THE SHEET • Tap a printed scale note to adopt it • Tap a printed dimension to capture it as a live dimension • No text layer? Calibrate with two snapped clicks and a known length SNAPS TO THE REAL LINEWORK • Endpoints, intersections, and perpendicular tracking are read from the sheet's own vector geometry — the mark lands where the line actually is CHECK SETS THAT ROUTE THEMSELVES • Identity-locked ink for every reviewer • Move a set on and the work orders on that drawing follow the routing • Email notifications and the in-app Check Sets inbox keep the review moving without paper on anyone's desk ONE FILE, EVERY DEVICE • Marks live inside the PDF itself — a sheet marked on iPad opens live and editable on the desktop apps, and back again • Apple Handoff: an open review follows you between your devices THE ORIGINAL STAYS PRISTINE • Autosave writes to a verified working copy; the pristine sheet is never rewritten • Export flattened for the record, editable for the next reviewer, or clean Full markup kit: pen, highlighter, regions, polylines, polygons, clouds, callouts, text, photos, stamps, counts, and areas — with per-tool remembered styles and undo/redo everywhere. YOUR DRAWINGS STAY ON YOUR DEVICE Once you have signed in on a device, drawing and measuring keep working with no network. Your documents and marks are stored on the device; signing in carries only your name and work email. Built by Fetzer Architectural Woodwork — for people who build from drawings.