Gridproof: Contact Sheets

Update guide

Version 5.0 (build 10)

This guide covers version 5.0. The current website catalog lists version 5.0. Check the App Store for availability on your device; the features below require version 5.0 or later.

CONTACT SHEETS FIRST Compare photographs, select favourites and deliver a contact sheet your client can review. Version 5.0 for iPhone and iPad leads with a preview of the finished sheet, then offers culling, comparison and delivery controls.

SAVE THE PROOF YOU SENT — NEW IN 5.0 Named proof rounds preserve the generated PDF, decision CSV and original photo-number map. Reopen or share the same files later. Apply numbered client replies to the original photo identities even after reordering the project. Up to 20 saved rounds and 256 MB per project. Client picks are saved before success is reported; missing required previews stop PDF delivery.

PROJECT BACKUPS AND RECOVERY — AVAILABLE IN 4.0 Export a JSON project backup with resized previews, decisions, metadata and settings. Restore validates it and creates a separate project. Recently removed projects remain recoverable until explicitly deleted permanently.

PREVIEWS AND STORAGE Previews are up to 1200 pixels on the long edge, not full-resolution originals. Original photographs are never edited or deleted. Saved proof rounds are local and are not included in JSON backups or duplicated projects; share their PDF and CSV files separately. Interface and screenshots are English. Store descriptions are localized.

Guide updated 2026-11-04.