Solve puzzles with real-time generated levels. Adjust difficulty with four options. Play against peers in local challenges. Use undo/redo, hints, and error checking. Track cell input with path notes. Save and reload puzzles. Auto-save on exit.
Learn Ham material with structured study sessions and exams. Review flashcards, track progress, and access detailed explanations for each question. Set study goals and receive feedback on performance.
Manage accounts with account support. Schedule messages for specific times. Link Web via QR code. Start chats without saving numbers. Use a security checklist to protect accounts. No data collection.