RingConn Gen 2 vs Gen 3 (2026): Should You Upgrade?

RingConn refreshed its smart ring line in 2026 with the Gen 3 at £349, alongside the older Gen 2 still available at £239. Both rings share the same no-subscription RingConn app and Apple Health / Google Fit integration. The £110 price difference buys an upgraded sensor stack (multi-wavelength PPG, skin-temperature trend), a slimmer 2.5mm ring profile, and faster charging. This guide explains what's actually new in the Gen 3 and which ring is right for which user.

The Gen 3 upgrades fall into three categories: sensor improvements, form factor, and charging convenience.

Multi-wavelength PPG. The Gen 3's photoplethysmography array uses multiple LED wavelengths (green, red, infrared) rather than the Gen 2's single-green-LED setup. The practical difference is more reliable SpO2 measurement during sleep, when finger movement and pressure changes degrade single-wavelength readings. For users using their ring for sleep apnea screening, this is a meaningful clinical accuracy upgrade.

Skin-temperature trend tracking. The Gen 3 includes a thermistor that tracks finger skin temperature trends across nights. This is useful for menstrual-cycle phase detection (skin temperature rises around ovulation) and for illness early-warning (fever often precedes other symptoms by 24-48 hours). The Gen 2 doesn't have this sensor at all.

Slimmer ring profile. 2.5mm thick versus 2.8mm on the Gen 2 - small in absolute terms but meaningful for users with smaller fingers, for users who wear the ring during weight training, and for women who wear the ring alongside other jewellery. Reviews of the Gen 3 consistently cite the slimmer profile as a noticeable comfort improvement.

Faster charging. Gen 3 ships with a faster charging dock - ~50 minutes for full charge versus 90 minutes on the Gen 2 dock. Marginal in absolute terms but a real convenience for users who put the ring on quick charges during showers.

Honest framing on the £110 decision:

Upgrade to Gen 3 if: you specifically want skin-temperature tracking (cycle tracking, illness early warning), you'll use the improved SpO2 for sleep apnea screening, the 2.5mm slimmer profile matters for comfort, or you want the latest sensor stack for longer future-proof use.

Stick with Gen 2 if: you primarily care about sleep, HRV, recovery, and activity metrics (all identical between the two), battery life matters more than sensor accuracy (Gen 2 is 10-12 days vs Gen 3's 8-10), or you want the lowest credible no-subscription smart-ring entry point at £239.

If you already own the Gen 2: the upgrade case is meaningfully weaker. The Gen 2's existing sensor stack delivers reliable sleep and recovery metrics that aren't materially worse than the Gen 3 for most use cases. The £110 spend on a Gen 3 is better directed at a CGM sensor for two weeks of metabolic insight or saved toward a 2027-tier refresh.

At the £239-£349 RingConn price band:

vs Oura Ring 4 (£349-£399 + £5.99/month subscription). RingConn's no-subscription model is the deciding factor for many buyers - over a 3-year ownership period, Oura's subscription adds £216 to the all-in cost. Oura's app is more mature with more research integrations; RingConn's app is simpler but functionally complete for core metrics.

vs Ultrahuman Ring Air (£299). Roughly equivalent positioning - both no-subscription rings at £299-£349. Ultrahuman has a more aggressive metabolism-PowerPlugs marketing angle; RingConn has the longer battery life. The choice often comes down to app preference - both are credible options at this tier.

vs Samsung Galaxy Ring (£399). Samsung's ring is more expensive and tightly integrated with the Samsung Health ecosystem; RingConn is platform-agnostic with broader Android/iOS support. For users in the Samsung phone ecosystem, the Galaxy Ring is the natural choice; for cross-platform users, RingConn is the safer pick.

Our smart ring health metrics guide covers the full cross-brand comparison in more detail including the sensor-stack differences.