Ultrahuman Ring AIR vs Ring PRO
Ultrahuman sells two rings. Here is a full breakdown of the differences, who each is for, and the pricing with our 10% referral discount applied.
The 30-second answer
Buy the Ultrahuman Ring AIR if you want the best subscription-free smart ring at the lowest price — it covers sleep, HRV, recovery and steps with excellent accuracy. Buy the Ultrahuman Ring PRO if you specifically want continuous 24/7 skin temperature tracking, improved overnight SpO₂, or the extended battery life, and you are comfortable paying roughly £90 / $100 more.
Full spec comparison
| Feature | Ring AIR | Ring PRO |
|---|---|---|
| Released | 2023 | 2025 |
| Material | Titanium | Titanium |
| Weight | ~2.4g | ~3.0g |
| Battery (real-world) | 5–6 days | 7–8 days |
| Water resistance | 10 ATM | 10 ATM |
| Heart rate & HRV | Yes | Yes (updated sensor) |
| SpO₂ monitoring | Nightly spot check | Continuous overnight |
| Skin temperature | Nightly baseline | Continuous 24/7 |
| Steps / movement | Yes | Yes |
| Sleep tracking | Full stage detection | Full stage detection |
| Monthly subscription | None | None |
| RRP (USD) | $349 | $449 |
| RRP (GBP) | £329 | £419 |
| RRP (EUR) | €379 | €469 |
| With 10% referral (USD) | $314.10 | $404.10 |
| With 10% referral (GBP) | £296.10 | £377.10 |
| With 10% referral (EUR) | €341.10 | €422.10 |
Who should buy the Ultrahuman Ring AIR?
The Ring AIR is the right choice for most people. It delivers the full Ultrahuman experience — Sleep Index, Recovery Score, HRV trends, Circadian Rhythm tracking, and the best wearable app in the category — at a lower price and in a lighter form factor.
- Anyone buying their first smart ring and wanting to try the platform before committing to the PRO price
- Anyone switching from Oura Ring who wants the same data without the monthly subscription
- Apple Watch users who primarily want better sleep data
- Anyone who wears rings regularly and wants something as light as possible
Who should buy the Ultrahuman Ring PRO?
The Ring PRO makes sense when the specific upgrades — continuous skin temperature and extended battery — are directly useful to you.
- Anyone using cycle tracking, where continuous skin temperature is significantly more accurate than nightly readings
- Frequent travellers or athletes who want 7–8 days between charges
- Users who want continuous overnight SpO₂ tracking rather than spot checks
- Anyone who simply wants the latest hardware and isn't price-sensitive
The subscription question
Neither ring requires a subscription — and this is the single most important thing to understand before buying either product. Oura Ring 4, the main competitor, charges £6/month to access most of its insights. Over three years that adds ~£215 to the cost. Both the Ring AIR and Ring PRO are one-time purchases with no ongoing fees.
Does the 10% discount apply to both?
Yes. The referral link on this site applies 10% to the Ring AIR, Ring PRO, Blood Vision, and any accessories in your basket. The discount is applied automatically at checkout — no code to enter. See our Ultrahuman referral code page for more detail on how it works.