After testing the KEEPONFIT Fitness Tracker for two weeks, I'm blown away by its value. The 1.57" touchscreen stays responsive even when my hands are sweaty during HIIT sessions - a rare feat for budget trackers.

The 100+ workout modes surprised me with their accuracy. During my pool swims, the 3ATM waterproofing held up perfectly, though I wish it displayed real-time stroke count like premium watches.

Sleep tracking became my guilty pleasure. Waking up to see I scored 92% sleep quality (with detailed REM/light/deep breakdown) motivated me to ditch late-night scrolling. The SpO2 readings matched my doctor's pulse oximeter within 1-2% margin.

Battery life is where this shines. After 5 days of continuous heart rate monitoring and 3 workouts, I still had 18% left. The magnetic charging cable snaps securely - no more fumbling with pins like my old Fitbit.

Downsides? The band's clasp requires nail pressure to secure - annoying for quick gym transitions. Notifications sometimes lag by 10 seconds during phone calls. And while the VeryFit app gets the job done, its UI feels dated compared to Fitbit's ecosystem.

For under $50, this delivers 90% of features found in $200+ wearables. If you want reliable health tracking without breaking the bank (and can live with minor quirks), this is your best budget companion.