A smart ring and companion app that tracks sleep stages, heart rate variability, and body temperature to deliver personalised health insights.
At a glance
| Price from | £299 |
| Best for | Comprehensive wearable sleep tracking |
From Oura's own website.
What stands out
- Highly accurate sleep stage and heart rate monitoring
- Discreet and comfortable ring form factor
Worth knowing
- Requires a monthly subscription fee for full data access
How it ranks
Oura is ranked 1st of 10 in Best Consumer Hardware Startups (Lister Score 97.1).
#1 in Best Consumer Hardware Startups · Lister Score 97.1
Oura, founded in 2013 in Oulu, Finland, makes the Oura Ring, a smart ring that tracks sleep, activity, heart rate and temperature, sold with a membership. It raised over $900 million in a Series E at about $11 billion in October 2025, and postponed a planned IPO in September 2026, so it remains private.
Oura said paid members had reached 5.7 million when it postponed its IPO in September 2026..
| Rank | Best Consumer Hardware Startups | Score |
|---|---|---|
| 1 | Oura | 97.1 |
| 2 | Nothing | 95.9 |
| 3 | Eight Sleep | 94.6 |
| 4 | Even Realities | 93.4 |
| 5 | Ultrahuman | 92.1 |
| 6 | Viture | 90.8 |
| 7 | Framework | 89.5 |
| 8 | Mill | 88.2 |
| 9 | Matic | 86.9 |
| 10 | Tonal | 85.6 |
Frequently asked questions
How does Oura rank on Lister?
Oura is ranked 1st of 10 in Best Consumer Hardware Startups (Lister Score 97.1).
Appears in
- #10 in Top 10 AI Sleep-Tracking Apps · AI Tools
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