Tank Timeline: Aquarium Log

Log your aquarium's water tests and see how readings change over time. Tank Timeline is a private journal for freshwater, planted and shrimp tanks. Start free with one aquarium, water-test logging, week and month charts, and JSON backup. No Tank Timeline account is required; your journal stays on your device. LOG WATER TESTS • Record temperature, pH, ammonia, nitrite, nitrate, GH, KH, phosphate, total dissolved solids, conductivity, potassium, iron, free ammonia and ammonium • Choose freshwater community, planted-tank or shrimp-tank presets • Add your own parameters and units • Use multiple named test timers while entering results SEE YOUR TANK'S HISTORY • Keep water tests, care records and notes in a searchable journal • Review a week or a month of parameter charts for free • Use free JSON backup and restore, including app photo copies • Import water-test records from CSV with a preview before saving PLAN CARE WITH PRO • Schedule water changes, testing, feeding, fertilizing, filter cleaning and custom tasks • Set daily, weekly, selected-weekday, monthly or custom repeat intervals • Receive optional local notifications • Review upcoming, overdue and completed maintenance in one calendar FREE FOR ONE AQUARIUM Water-test logging, custom parameters, test timers, searchable history, week and month charts, JSON backup and restore, and CSV import. TANK TIMELINE PRO Choose a monthly subscription or a one-time lifetime purchase for multiple aquariums, maintenance planning and reminders, photo history, six-month and yearly trends, and CSV export. Tank Timeline records observations only. It does not diagnose aquarium conditions, evaluate water safety, or replace test-kit instructions or advice from a qualified aquarium professional. Privacy Policy: https://tank-timeline-legal.vercel.app/privacy-policy/ Service Terms: https://tank-timeline-legal.vercel.app/terms-of-use/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/