Open a roll, add a frame, note where you are and how you exposed it. Seconds per shot.
A logbook for film photographers
Shoot film.
Keep every detail.
Film cameras don't record dates, locations or settings. MatchGrain logs every frame as you shoot — then writes real metadata back into your scans.
Download on theApp Store
iPhone · iOS 17 +
The problem
A scan is a photo
with no memory.
When your film comes back from the lab, every frame carries the same wrong date and no location. No camera, no lens, no exposure. MatchGrain closes the gap between the shutter and the scan — so a roll you shot in Rome in April actually says so.
How it works
Three steps, one clean roll.
Point MatchGrain at your developed scans. It lines them up against your log automatically.
Process the roll and every scan gets real date, time, GPS and EXIF — saved to your library.
Your archive
Every roll, laid out
like a contact sheet.
Browse your shooting history the way it was exposed — roll by roll, frame by frame. Track what's still in the camera, what's ready to match, and what's been processed.
Features
Built for the way you shoot.
F·01
Frame-by-frame log
Date, time, location, ISO, shutter and aperture — captured for every exposure, the moment you take it.
F·02
Camera & lens library
Save your bodies and glass once. Attach the right setup to any roll in a single tap.
F·03
Smart scan matching
Scans are auto-paired to your log by sequence, with offset correction for blank frames and false starts.
F·04
EXIF + GPS injection
MatchGrain writes date, time, GPS and full EXIF directly into each scanned image file.
F·05
Straight to Camera Roll
Processed frames land in your photo library — properly dated, placed and searchable.
F·06
35mm, 120 & more
Track any format and any frame count, from a 24-exposure roll to medium format.
On the roadmap
Coming to future rolls.
Where MatchGrain is headed next. Shipped features above; everything here is in development.
01Planned
iCloud sync
Every roll and camera, mirrored across all your devices.
02Planned
Apple Watch quick-log
Log a frame the instant you press the shutter — no phone needed.
03Planned
Built-in light meter
Meter a scene and record the reading into the frame in one motion.
04Planned
Lab scan import
Pull developed scans straight from supported labs into matching.
05Planned
Film stock profiles
Looks, notes and reciprocity data for every emulsion you shoot.
06Planned
Shareable roll archives
Export a finished roll as a contact sheet to print or share.