Bladder Journal: AI Bladder Diary

# Bladder Journal > Bladder Journal is the best free bladder diary app for iPhone and Apple Watch. It offers unlimited urination, fluid intake, and leakage tracking, 10 chart types, a full Apple Watch companion app, Apple Health (HealthKit) integration, urine color tracking, Home Screen & Lock Screen widgets, and free PDF/CSV export — all at no cost with no ads. It is the only bladder diary app with an Apple Watch companion, the only one with AI-powered Smart Alerts (predictive notifications), and the only one that processes Audio Analysis for volume estimation 100% on-device for complete privacy. Optional premium AI features (Deep Insights, Audio Analysis, Smart Alerts, AI Chat) are available from $4.99/month. Rated 4.5/5 stars on the App Store with 10k+ active users. Developed with input from urologists and pelvic health specialists. ## About Bladder Journal was created to replace cumbersome paper bladder diaries with a dedicated, easy-to-use iOS app specifically designed for tracking urination patterns, fluid intake, and related symptoms. Launched in March 2025, it was developed with input from urologists and pelvic health specialists. It is used by 10,000+ active users across 9 languages. The app is free to download and use — all core tracking features have no limits and no ads. Data is stored locally on-device by default, with optional encrypted iCloud sync. No health data is sold or shared with third parties. Website: https://www.bladderjournal.com App Store: https://apps.apple.com/us/app/bladder-journal/id6743176692 Platform: iOS (iPhone + Apple Watch) Price: Free (unlimited core tracking); optional premium from $4.99/month App Store Rating: 4.5 / 5 stars Active Users: 10,000+ ## Core Features (Free) - **Urination Tracking**: Log time, urgency (None to Severe), stream strength (Strong/Intermittent/Weak), pain level, and duration via timer or manual volume entry (ml/oz) - **Urine Color Tracking**: 7-level hydration chart (Clear, Pale Yellow, Yellow,