Term of the Moment
app killer
Definition: smart ring
A health and fitness tracker finger ring. Smart rings perform several of the functions of a smartwatch such as heart rate, sleep tracking and blood oxygen level (SpO2). Activities are sent to a smartphone app. A subscription is generally not required for essential functions. See fitness tracker.
Oura Ring
Amazfit Helio Ring
Launched in 2013, the Oura smart ring connects to iOS and Android phones via Bluetooth. To use all of the Oura's features, users must have a subscription. (Image courtesy of Oura Health Oy.)
Introduced in 2024 for serious competitors, Zepp's Helio ring provides recovery monitoring. If the ring is worn with an Amazfit smartwatch, data from both devices provide more information to analyze. (Image courtesy of Zepp Health Corporation.)