Useful Find #016Nov 2, 2026

1 iPhone app that picks which of your watches to wear each morning

I built it because I own 30+ watches and kept wearing the same 3

Og v2

๐Ÿ‘‹ HEY, IT'S RAJA

I own more than 30 watches, and I kept wearing the same 3. Most mornings I'd open the box, skip past watches I was excited to buy, and grab whatever I wore yesterday.

This week's find is the app I built to fix that. It's the first iPhone app I've made, the beta opened this week, and you can try it before it reaches the App Store on 17 November.


๐Ÿ” The find: an app that hands you a different watch each morning

Full disclosure: I made this one.

A pick that fits the day

Wristkeeper is an iPhone app for anyone with more than 1 watch. Every morning it suggests one from your collection. It looks at the weather and at how long each watch has waited, so a rainy day gets a 200m diver on a bracelet instead of the one on a leather strap.

If you have plans, tap Work,Dinner,Gym or Travel and the pick changes to fit.

The number I never wanted to work out by hand

When you put a watch on, you hold Wear this today once and the wear is logged. From there Wristkeeper keeps the cost per wear for every watch: what you paid, divided by the days it's been on your wrist.

Wristkeeper showing a Casio's cost per wear: 5 wears, $5 a wear of $25 paid.

A $25 Casio worn 5 times costs $5 a wear. A $1,200 watch worn twice costs $600 a wear, and 40 wears bring it down to $30. Once that number sits next to every watch, the ones in the back of the box get very hard to ignore.

2 details I like

When a month ends you get a Wrist Report: your most worn watch and your rotation, which you can share as a short video. And your collection syncs through your own iCloud, so there's no account to make and there are no ads.

๐Ÿ’ก Add your 3 most worn watches first, then the one you feel guiltiest about. Let Wristkeeper pick for a week and see how often that last one comes up.

๐Ÿ“ Where: the free TestFlight beta, from the button below on your iPhone

๐Ÿ“ฑ Works on: iPhone

๐ŸŽ Price in the beta: free for up to 3 watches, and Pro is free while you test

Join the Wristkeeper beta


How many watches do you own, and how many did you wear this month? Hit reply with both numbers. I read every reply, and if something in the beta feels slow or confusing, that's the best place to tell me.

Keep it useful,

Raja ยท The Useful Tech

P.S. Know someone with a watch box they never open? Forward this to them.

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