Wait on the $149 Luna Band. Tom's Guide wore Noise's screen-free tracker for five weeks and loved having it on the wrist, but told readers not to buy it until the app is finished. You'll find "Coming Soon" badges all over it, including on blood oxygen, so those features couldn't be tested at all.
The app wants seven hours of sleep, 5,000 steps, 410 active calories and 8km a day, and the reviewer couldn't find a way to change any of them. Even the built-in AI chatbot said sleep targets can't be set by hand. If you'd rather aim for eight hours and 10,000 steps, you'll have to keep score yourself.
The band starts tracking when you lie down, not when you fall asleep, so it can tell you how long you took to drop off. You don't have to remember when you put your phone down and do the math, as you do on the Amazfit Helio Strap.
There's no GPS and no route map, even if you carry your phone. Automatic detection logged a 4-minute run on a day when the reviewer's heart rate sat between 144 and 162 BPM for thirty minutes, so you're better off starting sessions by hand from the app's Health and Activity tab. HRV read about 20 ms lower than a Helio Strap worn alongside it. Tom's Guide couldn't say which one was right. Serious runners should look at the Helio Strap, Garmin Cirqa or Fitbit Air.
The fabric strap didn't trap heat or sweat, the band survived a swim in the ocean under its 5 ATM rating, and the 10-day battery claim held up, with four charges over the five weeks. That ties the Cirqa and beats the Fitbit Air's week, though the Whoop 5.0 and Helio Strap reach 14 days.
Whoop requires a subscription and Luna doesn't. The Fitbit Air and Cirqa lock some features behind a monthly fee. So the $50 you'd save against the Cirqa may grow over time, and the Air and Helio Strap are both $50 cheaper still at $99.
Most of these complaints are about the app and not the band, so software can fix them. Check back once the badges are gone and you can set your own goals. If you need a tracker today, buy one of the finished rivals.