Retrography is a personal-timeline app that stitches your days from what your phone already knows — places, photos, workouts, music — all on-device. People kept asking if they could bring their Apple Journal history over, so I pulled the export apart.
It holds more than I expected: photo times to the second, visited places with coordinates, songs, even workout GPS traces. Then I hit the wall. The visit records say where you were but never when. And for a trip written as one entry, there's no way to know which day a place belongs to. Apple Journal knows you went to five places. It doesn't know place number three was Tuesday.
That's not a bug. It's structural.
The realization
Apple Journal and Retrography both drop a dimension of time — opposite ones.
Apple Journal is built around moments. An entry is a thing you chose to capture, so entries are precisely timestamped; the places collected around them are decoration, so they're loosely dated.
Retrography is built around days. The day is the unit, so written entries are filed under a day (I keep a timestamp only to sort them, and never even show a time). Meanwhile the automatically-captured stuff — visits, photos, health — is timed to the second, because the timeline is the point.
Neither is higher-resolution. They're mirror images. And that's exactly why the import hurt: Apple Journal's precise thing (the entry) drops into Retrography's loose slot with zero friction. But Retrography's precise thing (the visit) receives Apple Journal's loose version — and there was all the pain.
Which is right?
Here's where I landed, and I'm sure of it:
Precision should attach to what's measured, not to what's remembered.
A visit or a photo was captured automatically, at the real instant. It has a true time for free. A written reflection is the opposite — made later, by a person, about a stretch of time. Timestamp it and you're either faking a precision the writer doesn't have, or recording when they held the pen. I write in the evening, about the day. Ask me to pin the afternoon walk to a minute and I couldn't, and wouldn't want to try. A day is the honest grain for a reflection.
By that measure Apple Journal has it backwards: it stamps the entry precisely (the one thing that can't honestly carry a time) and loosely dates the visits (the one thing that had a real time — Apple's own tracking knew it; the export just drops it).
So what actually gets lost
Almost nothing, going forward. The day you install Retrography, it starts recording exactly when you were where — precise place-at-time, captured live. The only casualty is history: the years already sitting in Apple Journal, which were logged loosely and can't be reconstructed into something precise. Fair enough. I'd rather admit a gap in imported history than fake it.
And the entries staying day-level isn't a limitation I settled for. It's the honest call: precise time on what was measured, a day on what was remembered.