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Open Lessons on the home screen and start with Basics. Courses cover the basics, further skills, opening, middle game and endgame, with board exercises.

KataGo play, built-in lessons and life-and-death practice work offline. An internet connection is needed to load purchase prices, buy or restore purchases.

Open Tsumego on the home screen. Choose 18k, 15k, 12k, 9k, 6k, 3k, 3 dan, 6 dan or 9 dan. Puzzles unlock in order within each group. Revisit unlocked puzzles from the thumbnail list, or use hints and trial mode. Answer playback can be started up to five times a day; the limit resets the next day and cannot be increased by a purchase.

Choose Pass and play under Local play to take turns on one device. The current version does not offer online matches.

Check that the Apple purchase completed. Connect to the internet with the original purchasing Apple Account, then open Settings → About AstraGo → Restore purchases. Pending purchases require approval; cancelled purchases do not unlock anything. If the issue continues, contact the developer instead of paying again.

Return to the home screen and choose Resume game. Find saved records under Library, then swipe a record to the left to delete it. Deletion cannot be undone in the app, so check first.

Tap Settings in the upper-right corner. Themes are under Graphics. Match sounds, historical-game sounds and background music have separate controls. You can also choose the app language in Settings.

The current version has no app-managed cloud sync. Whether a system backup or device transfer restores data depends on your system settings. Restore Purchases restores review and theme access only, not game records or practice progress.