Diamond Frame

Diamond Frame turns picture-framing math into a precise live preview and shop-ready cut sheet—fully offline, with no account and no camera clutter. Built for photographers, DIY framers, print sellers, and craft-fair makers who need exact mat borders, glass sizes, and blade cut lengths instead of guessing with a ruler. HOW IT WORKS Choose an outer frame size, lock your artwork aspect ratio, then tune top, bottom, left, and right borders on a live MatWindow preview. Readouts update instantly for outer frame, artwork opening, and glass size. When the layout looks right, generate a cut sheet for the shop floor. LIVE MATWINDOW DESIGNER Linked border controls keep proportions clean while you experiment. Switch between inches and millimeters anytime. Prefer a bottom-weighted mat? Set a default bias and it restores on cold start with your other defaults. SEED SIZE CATALOG One-tap apply for common US frames from 4×6 through 24×36, plus ISO and A-series sizes. Three starter projects—gallery print, diploma, and triptych—make the app useful on first launch. ARTWORK ASPECT LOCKS Lock 2:3, 4:5, 1:1, 5:7, A-series, or enter a custom ratio. Openings stay proportional while borders reflow so every print gets even margins. MULTI-OPENING MATS Design single, double-stacked, or triple-row layouts with equalized gutters and per-window size chips—ideal for triptychs and multi-print mats. BLADE CUT SHEETS Get rail lengths, opening size, glass size, and rabbet allowance in a clear cut list. Share as plain text through the system share sheet to printers, framing shops, or collaborators. PROJECTS ON DEVICE Save, rename, duplicate, and delete projects locally on a project shelf. Your library and unit preferences restore when you return. No cloud, no sign-in, no network upload—storage stays on your device. OPTIONAL HOME WIDGET Reopen your last project or a favorite frame size with one tap from the home screen. Guided onboarding plus in-app Privacy Policy and Terms spell out the local-only model clearly. Whether you cut mats at home or prep orders for a print shop, Diamond Frame delivers even borders and shop-ready measurements in seconds.