A watch collection app for iPhone
Measure your wrist.
Then see what fits.
WORN measures your wrist size in millimetres, then puts every watch on it at true size. A 36mm dress watch and a 44mm diver land differently on the same arm, and you can see the difference before you buy. The collection you already own lives in the same app.
See it work
A watch collection app that knows your wrist size.
Screens from WORN 2.1.
Before you buy
Photographs of watches are taken on someone else's arm. These four answer the questions a photograph cannot.
Does this watch fit my wrist?
Hold your iPhone over your forearm and the depth camera measures your wrist, edge to edge, and reports the circumference in millimetres. It is a measurement rather than a guess from a photo: the reading is taken in three dimensions, so the angle you held the phone at cancels out, and the scan only settles once repeated readings agree. From then on every watch in WORN is drawn against that number.
Free, and it happens on your device. If your iPhone has no depth camera, set your wrist size by hand instead.
Try a watch on before you buy it.
One photo of your wrist, taken once and kept. Any watch can then be laid onto it at its real case diameter, so a 36mm dress watch and a 44mm diver land differently on the same arm and you can tell which one you actually want. That measured fit is drawn on your device and costs nothing.
If you want the photoreal version, an AI render arrives as an instant print that develops on screen, with the size check written on its border. Every render you pay for is kept: a gallery in Discover, and a Tried on strand in the Diary that is never counted as a wear.
A render costs 5 Credits, or 10 on the pro model. You are charged only when a picture actually comes back.
Ten watches a night, then the tray closes.
A catalogue of 46,257 pieces, dealt ten at a time from a closed tray. When the ten are judged the night is over, which is the opposite of a feed. Tap a card and the piece gets a study page: a monograph on the watch, its movement, its maker and its material, not a product listing.
Keep what deserves it, rank your keeps from Grail down to Pass, and search the shortlist once it grows past easy remembering.
Is it running well?
Rest your iPhone against the caseback for thirty seconds and WORN listens to the movement's beat, then answers the only question you actually have. Drift comes back in seconds a day, with the confidence interval attached, because a number without one is a guess with a decimal point. Readings are kept as an accuracy log per watch, so you can watch a service coming instead of being surprised by it.
Listening costs no Credits and needs no network.
The ones you already have
Where the watches you own live.
Point the camera and it knows the watch
Reference, heritage, calibre and the movement inside it, filled in for you.
A wear logged with one tap
A watch picked for today's outfit
A box, not a spreadsheet
Every watch on its own cushion in a walnut box you arrange yourself. Lift the lid and tap into photos, box and papers, purchase price and service history.
A journal entry for the day
Write it yourself, or answer a prompt. Prompts are always free.
Cost per wear, and what it argues for
What you paid divided by the days you actually wore it, alongside rotation, wear duration and brand breakdown. The honest number usually argues for wearing more rather than buying more.
Loved by collectors
Five stars on the App Store.
“This app made me feel closer to my watches and the way I use them. I am someone who has a lot of watches but mostly fail to wear them on a regular basis.”
“Loved the concept behind WORN. The app feels premium, clean, and nicely put together. It gives watch collectors a dedicated space to build and enjoy their collection in a more organized and personal way.”
“I enjoyed putting up my watch in the virtual box and it was such a beautiful journey. The app recommended me some really interesting Reddit posts about my watch that I wouldn't have come to check.”
Credits first · Premium optional
What it costs.
Every watch you own gets a Slot, free. The diary, the wear log, the listening and the measured fit are free too. Only the AI pictures cost Credits, and your first AI action is on us. WORN Premium is there if you use those often enough to stop wanting to count them.
Everything else is free for everyone
Credit packs are a one-time consumable purchase; WORN Premium is an auto-renewing subscription. Both are charged to your Apple ID at confirmation. Purchases are non-refundable, your Credits never expire, and you can cancel Premium any time in your App Store settings.
Your watches stay on your device.
Your collection, your wear diary, your wrist photo and your recordings live on your device and sync through your own private iCloud database, which we cannot read. No photo leaves the phone in the background. Every AI feature is a deliberate tap, covered by a consent you can withdraw in Settings at any time, and the privacy policy names every service the app talks to and exactly what each one receives.
Measure your wrist. It takes a minute.
Free on iOS · 20 Credits to start · Premium optional