Comparison
Lychnos Ring vs Natura Interface.
Both put AI agents one press away. They differ in how the ring connects, where you hear the answer, what else it does and what it costs.
In short. Natura Interface is an inexpensive ring that reaches the AI agents you choose through your phone, and tracks your health as well. Lychnos Ring costs more, is designed to work without the phone after set-up, and answers on its own screen and speaker; health comes with its second model.
Side by side
| Lychnos Ring | Natura Interface | |
|---|---|---|
| Status | In development; free list open | Pre-orders expected from November 2026; shipping planned for December or January |
| Price | Expected €299 | $99 |
| Plan | €9.99 a month for the first buyers; later expected €14.99 to €19.99 | Free for the first three to six months, then $9 a month |
| Which AI | Lychnos, on models we choose; or your own API key | AI agents you choose, such as ChatGPT or Claude |
| Where answers come back | On the ring’s screen, and at your ear from its speaker | Through connected headphones, an iPhone Live Activity or its app |
| Connection | Own eSIM (design); the phone only for set-up | Through your phone |
| Health tracking | Planned for the second model | Yes: heart rate, heart rate variability, sleep stages, skin temperature, steps |
Sources, checked 3 November 2026: TechCrunch, 8 October 2026 and Analytics Insight on Natura. Lychnos Ring’s figures are design targets. Prices and features change.
The same idea, two answers
Natura’s answer is a low price, health tracking included, and the phone doing the heavy work. Ours is to give the ring its own connection, a screen and a speaker, so it can finish the job without the phone. Lychnos also asks before it sends, moves or deletes anything: one press means yes. We think every AI agent that acts for you should ask first.
More on how Lychnos acts for you in a personal AI agent that asks first.