Tank Timeline

Keep every aquarium's care history in one clear, private journal. Tank Timeline helps you record raw water-test readings, schedule routine care, and review what changed over time. It works without a Tank Timeline account and keeps your journal on the device. LOG WATER TESTS • Record temperature, pH, ammonia, nitrite, nitrate, GH, KH, phosphate, total dissolved solids, conductivity, potassium, iron, free ammonia and ammonium • Start with freshwater community, planted-tank or shrimp-tank presets • Choose which readings each aquarium tracks, including your own parameters and units • Run multiple named test timers while entering results PLAN AQUARIUM CARE • Schedule water changes, testing, feeding, fertilizing, filter cleaning and custom tasks • Use daily, weekly, selected-weekday, monthly or custom repeat intervals • Receive optional local notifications • Review upcoming, overdue and completed maintenance in one calendar FOLLOW THE TIMELINE • Browse water tests and maintenance in a searchable journal • Review parameter charts for a week or a month • Add notes to tests and maintenance records • Keep separate histories for multiple aquariums with Pro YOUR DATA, YOUR CHOICE • No Tank Timeline account • Journal data stays local on your device • Free JSON backup and restore, including app photo copies • CSV export is available with Pro FREE includes one aquarium, raw water-test logging, a month of trends, searchable history, custom parameters, test timers and JSON backup. TANK TIMELINE PRO Choose a monthly subscription or a one-time lifetime purchase to unlock 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/