Colmi R09 review: can a $20 smart ring replace an Apple Watch at night?
A week of sleep tracking with the $20 Colmi R09 next to an Apple Watch Ultra. The sleep data matched. The sizing guide didn't.
About this site
I sell for a living, and most of the day is calls. The monitors, earbuds, mics and watches here are the ones I bought for that job, scored after weeks on the desk, with the price I paid. How I test
News
All newsApple's 'Welcome Home' event is October 13. Most of what you've read about it is still a rumor.
Apple confirmed an October 13 event in Tribeca. The home hub, Apple TV and HomePod mini are expected. Prices and a second Mac event are not.
Microsoft will pay up to $1,000 to switch from a MacBook Pro, after a trade-in and an inspection
Surface Laptop Ultra ships October 16 at $2,599. The MacBook trade-in bonus is real, and it arrives after Microsoft inspects your old Mac.
Apple's new CEO is in the design studio several times a week. Tim Cook went about once a month.
Bloomberg reports John Ternus has made himself Apple's de facto design chief a month into the job. What that changes this year, and what has to wait.
All reviews
By category
7.0Colmi R09, the $20 smart ring
The sleep data matched my Apple Watch. Colmi’s sizing guide didn’t.Should you buy it?
7.5Ray-Ban Meta Gen 2 after a month
Nobody in a client meeting has noticed the camera. Two things still hold them back.Should you buy them?
4.0Gawfolk GF005 after two weeks
Same brand as my main monitor, an unusual shape, and a very different score.Should you buy it?
8.0Gawfolk GF270J after two weeks
Budget 4K at a refresh rate Macs rarely get. Two weeks in, one thing I miss.Should you buy it?
7.0SoloCast after three years
Three years of calls. Then I moved it 15 cm and people stopped hearing me.Should you buy it?
7.0AirPods Pro 3 after 10 months and 3 pairs
Ten months, three pairs, and I still reach for them first.Should you buy them?
6.0Apple Watch Ultra (1st gen) after watchOS 27
Apple dropped it from watchOS 27. That changes who should buy one used.Should you buy it?
Field notes
All notesBuilding with AI without outsourcing taste
Where I let AI do the work, where I only let it help, and how I tell the two apart.
The outbound system that helped double revenue
Four years of building and fixing outbound at two B2B SaaS companies, and what each step did to the numbers.
How I built a SaaS alone and shipped it to the App Store
Seven apps that didn't talk to each other, one codebase for web and iOS, and eleven days of App Store review.
If you make desk gear, email me what it is. I’ll tell you how I’d test it and whether it fits this desk. You read the review when everyone else does.