After wearing the KEEPONFIT smartwatch daily for 3 weeks (yes, even in the shower!), I'm convinced it's the best budget fitness tracker that doesn't feel 'cheap'. That matte pink case? Surprisingly stain-resistant against my sweaty workouts.

The SpO2 sensor gave me peace of mind during high-altitude hikes, though I noticed a 2-3% variance compared to my doctor's pulse oximeter. Pro tip: Wear it snugger than usual during measurements for more consistent readings.

That '7-day battery' claim? Mostly true - I got 5.5 days with continuous heart rate monitoring and about 30 daily notifications. The magnetic charger snaps satisfyingly into place - no fumbling like with some pricier watches.

Swimming tracking shocked me - it survived my chaotic butterfly strokes and even auto-detected different pool laps. Though the touchscreen becomes useless when wet (hello, side button navigation!).

The real MVP? Custom watch faces. I designed one showing my step count, heart rate, AND today's coffee intake (via the app's custom metric feature). Take that, Apple Watch!

Downsides? The vibration motor feels like a drowsy mosquito - I missed several work calls. And while it syncs with both Android and iPhone, iOS users lose quick-reply functionality.

For $79.99, this isn't just a 'good starter smartwatch' - it's a legit health companion that made me ditch my $250 Garmin. Just don't expect ECG or fall detection at this price point.