Added an achievement for completing the Daily Challenge 200 days in a row. The achievements page now displays eight milestone badges for 3, 7, 14, 30, 100, 200, 500, and 1000 days.

New Daily Challenge achievements: track your current and best streaks, and unlock badges for 3, 7, 14, 30, 100, 500, and 1000 days. Previously saved daily wins count too. Earned badges stay unlocked even if your streak ends.

Added Hindi, Arabic, French, Bengali, Brazilian Portuguese, Russian, Indonesian, and Urdu, bringing support to 16 languages. Improved number entry and reasoning-note layouts for right-to-left languages, with clearer button labels on small screens.

More compact reasoning notes: switch between digit marks and position candidates. Select positions 1–4 directly and see candidates for all four positions below the grid. Help and clear controls are now in the header.

Introducing Daily Challenge: one fixed four-digit puzzle each day, with no repeated digits and unlimited guesses. Your guesses, unfinished input and reasoning notes are saved automatically so you can return and continue. Completed results stay locked for the day, and a new puzzle arrives at midnight in your device’s local time. Improved small-screen layout and dark-mode readability.

Add reasoning notes to mark excluded or included digits and track candidates for each position. A home-screen banner supports the app while keeping gameplay clear.

Adds Apple Game Center friend invitations and random matches, synchronized rounds, a 60-second reconnect countdown, and local friend-battle stats.