Interface: a $99 smart ring that summons AI agents with a single tap

Interface is a $99 smart ring from Natura, designed for the age of AI agents. A single tap on the ring lets you send a task to an agent straight from your finger, with no phone required. The company was founded by Carlo Edoardo Ferraris, who previously built an accessories company. He became convinced that rapid progress in AI demands a new kind of interface — one people can talk to as naturally as they would another person.

Which agents are supported

Interface works with a range of AI agents. At launch, it supports: • Claude • ChatGPT • Grok Bot • Meta's Muse • Instinct

Users can split tasks across agents based on their strengths. You might ask Claude to write code, have Instinct book a restaurant table, and let Grok Bot handle something else entirely. Responses come back through earbuds, iPhone Live Activities, or the NatureOS app.

Use cases

Ferraris laid out several concrete scenarios: • While running: ask the ring to start tracking your workout • After waking up: check your schedule for the day • In the shower: ask it to reorder your shampoo • Before bed: turn off the TV and set a morning alarm • After a meeting: send discussion notes to a colleague

"Over time we concluded that people need 24/7 access to agents," Ferraris told TechCrunch. "The ring form factor is ideal — it's an extension of you. You can shower in it, sleep in it, and never have to take it off."

Health and battery

The ring tracks a full suite of metrics: • Heart rate and resting heart rate • Heart rate variability (HRV) • Different sleep stages • Daily activity and step count • Skin temperature

The battery lasts 6–12 days depending on use, with a full charge taking 100 minutes.

Competition and positioning

The market already has health-focused rings (Oura Ring, Samsung Galaxy Ring, Ultrahuman, RingConn) and AI-focused alternatives (Pebble, Vocci). According to the founder, Interface combines both approaches — high-quality health tracking plus the components needed to talk to agents and record meetings, packed into a compact form factor with long battery life.

"This ring is substantially different from anything else on the market," says Ferraris. "We combined high-quality health tracking with the components for talking to agents, recording meetings, and external memory, plus an incredibly long battery life and a very compact size."

Pricing and timeline

The $99 price is deliberately set below competitors. After a 3–6 month free period, a $9/month subscription kicks in. Natura plans to raise the price later, but wants to grow its installed base and build demand first. Manufacturing costs are comparable to the Oura Ring and Samsung Galaxy Ring, since similar components are used.

Preorders open next month, with shipping planned for December or January.

History and future

Natura previously released HumanPods, AI-powered earbuds for interacting with agents. But rapid progress in voice technology convinced the team that a different form factor was needed.

Ferraris believes the ring will replace much of our screen-based interaction. "The main interface between people and technology is going to be a ring," he says. "Not right away, because not everyone has a personal agent yet, but I think soon everyone will. In the first phase, it'll be for people who already use agents — mostly in tech. But within a year, I expect most people will have a personal agent."