Taking part in our study
We study sleep and phone use. This page is for people who received a study code.
The study right now
Livephones sharingin the last 7 days
morningswith a check-in
teststaken
Totals across everyone sharing with our study, refreshed every 30 seconds.
Turn sharing on
- 1Open the app's Settings and tap Have a study code?
- 2Type the code you were given.
- 3Turn on Share my data with the study.
Today then says Updated and shared with our study.
Two check-ins a day
Evening
One 30-second test before bed.
Morning
About 90 seconds, with a 30-second test. Then you see how you slept. While sharing is on, the test is part of every check-in.
What leaves your phone
Sent while sharing is on
- How the phone moves, in 30-second summaries
- The sleep in Health, if an Apple Watch wrote it
- Your check-ins and test results
- When the phone charges, locks and unlocks
- Your phone's model, iOS version, app version, time zone and language setting
Your location, the apps you use and what is on your screen are never sent. The privacy policy has the full list.
Under your study code only. The data go to our study's database over an encrypted connection. Only the study team can read them.
Stopping. Taking part is voluntary. Turn the switch off and the app stops sending at once. Data sent before then may still be analysed.
Deletion. Write to [email protected] with your study code and we delete what you shared.