Puzzld is a daily problem-solving platform across Math, Logic, Science, Puzzles, Mystery, and Aptitude. Every day you receive a Featured Challenge and three Brain Gym problems. Each problem is paired with an AI guide (Claude) that uses the Socratic method — it asks questions to guide your thinking rather than giving you the answer directly. Features: daily + weekly leaderboards, streaks, badges, a community feed where solves are shared and discussed, 96+ problems with new ones added every two days, dark/light mode, and an Android app. Built solo with FastAPI, Supabase, React, and the Claude API. Available free at puzzldapp.com.