Okay, so I've been on this keto journey for about 3 months now, and let me tell you - this little gadget has been a GAME CHANGER.
First off, the speed is insane. Like, I breathe into it while brushing my teeth and boom - ketone levels displayed before I've even finished spitting. No more waiting around like with those annoying blood tests.
The battery life? Legendary. I charged it when I got it and haven't plugged it in since (and that was 3 weeks ago!). Meanwhile my phone needs charging like 3 times a day...
What I really love is how it's made me understand my body better. Seeing those numbers change after a cheat day is brutal but motivating. Like a very honest (and slightly judgy) little coach in my pocket.
Pro tip: Do the test first thing in the morning like they suggest. I tried after coffee once and the numbers were WACK. Lesson learned.