Reef Book

Smart Logbook for Aquarists Understand your aquarium at a glance. Reef Book makes it easy to record water tests, follow long-term trends, and keep every tank’s history organized. Whether you care for a reef, planted tank, freshwater aquarium, or another setup, create a dedicated logbook for each aquarium and tailor its parameters, ranges, units, and appearance. Share an aquarium with fellow aquarists so others can view or contribute to the same history. Track What Matters • Record measurements with fast, intuitive controls • Choose from a comprehensive catalog of water parameters • Customize target ranges and display units for each aquarium • Mark important parameters as favorites • Manage as many aquariums as you need See the Big Picture • Spot patterns with clear trend charts • Review one month, one year, or your complete history • Give each aquarium a full-screen wallpaper for instant recognition • Add notes and smart tags for maintenance, dosing, livestock, and other events Share and Stay in Sync • Collaborate with others in a shared aquarium logbook • Keep your logbooks synced across iPhone and iPad with iCloud • Schedule automatic backups and choose how many to keep • No separate Reef Book account required Plus fun iMessage stickers!