Hunch
Sleep & recovery experiments
Your watch or ring already measures how you sleep and recover. Hunch helps you find out what actually changes it: test one habit for 14 nights and see if your numbers really move.
For iPhone · Reads Apple Health · Your first experiment is free
One change, tested properly
Most health tips are guesses. Hunch turns one into a fair test, using the data your devices already collect.
Pick one change
No caffeine after noon, the same bedtime every night, eating earlier. Choose one, or start from a lead in Insights.
Live it for two weeks
Seven nights as usual, then seven with the change. Hunch reminds you and keeps count of the days you stuck to it.
See if it really worked
Hunch compares the two weeks and tells you whether the change made a real difference, or whether it was just a normal week.
Everything at a glance
Today, at a glance
- Recovery, training load, stress and steps, measured against your own normal
- An effort range for today and a realistic bedtime for tonight
- Home and lock screen widgets
Spot your patterns
- Tag yesterday in one tap: alcohol, a late meal, a stressful day, travel
- Insights show what goes with your shorter nights and lower recovery, with a test for each lead
- Choose your focus: sleep, recovery, stress, blood pressure or reflux
Private by design
Everything is worked out on your iPhone. No account, no ads, no tracking. Your health data never leaves your device.
Free to start
Your first experiment is free. Hunch Pro adds Insights, unlimited experiments and a PDF report you can share with your doctor.
a month
a year, with a 1-week free trial
once
Hunch is a wellness app, not a medical device. It doesn't diagnose or treat any condition. Talk to your doctor before changing your treatment.