RingConn Gen 2 vs Ultrahuman Ring Air

For smart ring shoppers who refuse to pay Oura's $5.99/month subscription fee, the RingConn Gen 2 ($299) and Ultrahuman Ring Air ($349) are the top two subscription-free contenders compatible with both iOS and Android.

The RingConn Gen 2 wins on hardware endurance, slimness, and price: its 2.0mm ultra-thin titanium profile houses a 10-to-12-day battery (more than double Ultrahuman's 4-to-6-day runtime), includes a pocket battery case providing up to 150 days of off-grid charges, and adds continuous SpO2 sleep apnea monitoring while costing $50 less upfront.

The Ultrahuman Ring Air counters with a deeper, more proactive metabolic and circadian coaching app—translating your morning HRV and temperature curves into actionable sunlight exposure, movement, and caffeine cut-off windows. Buy RingConn Gen 2 for 12-day battery freedom and apnea tracking; buy Ultrahuman for biohacking coaching.