Comparison

Smartwatch HRV ECG Sleep Apnea Skin / Body Temp Biological Age Gym Auto-Detect (Relaxed) Water Resistance (Swim) Battery Life Android Compatible Subscription Free? Est. Price (INR) Withings ScanWatch 2 ✅ Yes ✅ Medical Grade ✅ Medical Grade ✅ Yes ✅ Yes (Vascular Age) ❌ Lacking (Manual) ✅ Yes (5 ATM) Up to 30 Days ✅ Yes ❌ Lacking ($10/mo) ~₹29,999 - ₹34,999 Amazfit T-Rex Series (3 & Ultra) ✅ Yes ❌ Lacking ❌ Lacking (Breathing only) ✅ Yes ❌ Lacking (Readiness score) ✅ Yes (Counts reps) ✅ Yes (10 ATM / Diving) 20 to 27 Days ✅ Yes ✅ Mostly (Premium extra) ~₹19,999 - ₹35,000 Garmin Venu 3 ✅ Yes ✅ Medical Grade ❌ Lacking (Breathing only) ✅ Yes ✅ Yes (Fitness Age) ✅ Yes (Counts reps) ✅ Yes (5 ATM) Up to 14 Days ✅ Yes ✅ Yes (100% Free) ~₹43,690 Amazfit Balance Series ✅ Yes ❌ Lacking ❌ Lacking (Breathing only) ✅ Yes ❌ Lacking (PAI score) ✅ Yes (Counts reps) ✅ Yes (5 ATM) Up to 14 Days ✅ Yes ✅ Mostly (Premium extra) ~₹14,999 - ₹24,999 Samsung Galaxy Watch Ultra ✅ Yes ✅ Medical Grade* ✅ Medical Grade* ✅ Yes ✅ Yes (AGEs Index) ✅ Yes ✅ Yes (10 ATM) 2 to 3 Days ✅ Yes (Samsung only)* ✅ Yes (100% Free) ~₹53,199 - ₹59,499 Samsung Galaxy Watch 7 ✅ Yes ✅ Medical Grade* ✅ Medical Grade* ✅ Yes ✅ Yes (AGEs Index) ✅ Yes ✅ Yes (5 ATM) 1 to 1.5 Days ✅ Yes (Samsung only)* ✅ Yes (100% Free) ~₹29,499 Google Pixel Watch 3 ✅ Yes ✅ Medical Grade ✅ Medical Grade ✅ Yes ✅ Yes (Cardio Score) ✅ Yes ✅ Yes (5 ATM) 1 to 1.5 Days ✅ Yes ❌ Lacking (Fitbit Prem.) ~₹39,900 - ₹43,900 Apple Watch Series 10 ✅ Yes ✅ Medical Grade ✅ Medical Grade ✅ Yes ❌ Lacking (VO2 Max) ❌ Lacking (Basic) ✅ Yes (5 ATM) 18 Hours ❌ Lacking (iPhone only) ✅ Yes ~₹46,900

Feature request for biological age