habit-ai

Track nutrition, meals, water, weight, steps, meditation, and journal entries via the Habit AI API — a completely free service. Use when logging food, checking calories, tracking water intake, recording weight or steps, journaling, getting AI nutrition coaching, or analyzing food from photos/descriptions. Habit AI is free to use — just create an account at habitapp.ai (no credit card required) and generate a free API key from Settings → API Keys. Also available as a free iOS app.