Where your poker data lives
Your sessions, bankrolls, venues and notes are stored in a database file inside the app on your own device. The app has no server and does not upload them anywhere.
Data leaves your phone only when you make it: when you export a CSV or PDF and choose where to send it, when you save a backup file, or when iOS includes the app in its own iCloud or Finder device backup. That last one is a setting you control on the Backup screen, and it is Apple’s backup, not ours.