Limen Ring — Sleep & Recovery Tracker
A ring you forget you are wearing, that tells you in the morning whether last night actually rested you.
Worn on the finger, because that is where it stays on

Most sleep data is lost to the tracker sitting on a bedside table. A ring is small enough and light enough that it stays on overnight, which is the only way an overnight measurement is worth anything.
Sleep, in stages
How long you slept, how long it took to get there, and how the night broke down — not just hours in bed.
Recovery trend
Resting heart rate and heart rate variability tracked night over night. The useful signal is the trend against your own baseline, not any single reading.
Daily activity
Steps and movement through the day, so effort and recovery sit side by side instead of in two separate apps.
Share with someone who cares
Give a family member view access to your trends. Useful if you are keeping an eye on a parent, or want someone keeping an eye on you.
Get the size right the first time
Ring fit is the single biggest cause of returns in this category, and finger size changes with temperature and time of day. If you are between sizes or unsure, order a sizing kit before the ring rather than guessing. A ring that spins is a ring that reads badly.
Limen.fit sells consumer wellness wearables. Nothing on this page is medical advice. Measurements are estimates produced by consumer sensors and will not match clinical instruments.