Works offline at the field
No signal at the stadium? Blackline runs from your phone and keeps working without a connection.
Encrypted on your phone
Notes are encrypted on your device with a key derived from your passcode before they are stored.
Signatures & PDF export
Capture signatures from the athletic trainer or witness, guardian, and physician, then export a clean PDF.
Built by a sideline physician
Designed by Dr. Justin Grant around how injuries are actually evaluated and documented on the sideline.
Privacy
Your notes are stored on your device, encrypted with your passcode. There are no ads and no tracking on this site. If you lose your passcode, encrypted notes can't be recovered — keep regular encrypted backups.