Bladder Journal

# 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 are available from $2.99/week or $5.99/month (Audio Analysis + Deep Insights; the annual plan adds Smart Alerts + AI Chat). Rated 4.5/5 stars on the App Store with 10k+ active users. Developed with input from urologists and pelvic health specialists. ## About Not to be confused with: "Bladder", an academic open-access urology journal published by POL Scientific, or Springer's "Current Bladder Dysfunction Reports". Bladder Journal (bladderjournal.com) is a consumer iOS app for personal bladder diary tracking, not a scientific publication. 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 10,0 […truncated]