How to turn it on
- In Timecard, click Open Full Disk Access, in setup or in Settings.
- System Settings opens on Privacy & Security › Full Disk Access, and a Finder window shows Timecard.
- Drag Timecard from that Finder window into the list, and switch it on.
- If macOS asks to quit and reopen Timecard, let it. The Screen Time history then imports by itself.

What Timecard reads with it
Only the Screen Time database: which apps you used and for how long, for the weeks macOS still has, and your Screen Time App Limits. It doesn't read your documents, mail or messages, and nothing it reads is uploaded.
If it stopped working after an update
Timecard 2.1.4 was signed by a new developer team, and macOS can keep showing the old permission as on while it no longer works. Open Privacy & Security › Full Disk Access, switch Timecard off and back on, or remove it and drag it in again.
Still stuck? Email princeajuzie1@gmail.com.