Aquarium Notebook is an aquarium tracker and fish tank log for everyday care, water test records and breeding. Organize your tanks, plan water changes and follow your fish and shrimp from new arrivals to growing fry. Keep a clear aquarium journal for your freshwater aquarium, planted tank or shrimp colony.

Aquarium and livestock tracking
Create separate records for your aquariums, including volume, setup date and inhabitants. Organize fish and shrimp by species, quantity and variety. Keep each tank's notes and history together.

Water parameters and test history
Manually log pH, GH, KH, TDS and temperature readings. Review water test results by aquarium and date, and see changes over time in tables and charts. Explore the water parameter guide to understand what each value means and how requirements vary between species.

Aquarium maintenance reminders
Set reminders for water changes, feeding, filter cleaning and other fish care tasks. Choose one-time, daily, weekly or monthly reminders to build your own maintenance schedule. Add notes about your observations and revisit earlier records.

Fish breeding and fry development
Track pregnancy or incubation records for guppies and other supported species. View estimated birth and hatch dates, record outcomes and keep track of fry counts. Follow the age and development of your fry colonies. Breeder mode brings records for your selected species together, while development illustrations help you explore embryo stages for supported species.

Fish and shrimp care guides
Browse species profiles and care information. Explore livestock compatibility and shrimp water compatibility tools to inform your choices. Find guides covering guppy varieties, water parameters, algae and fish diseases.

Photo journals and lineage tracking
Document changes in your aquarium and livestock with dated photos. Build growth albums, organize generations and keep lineage records. Share photo histories as PDF reports.

Aquarium expenses and backups
Record spending on food, equipment and other hobby supplies. Review income and expenses with charts. Export your records and photos to a backup file and restore them when needed.

Free version and Pro
The free version supports two aquariums, with limits on photos and some advanced features. A one-time in-app purchase unlocks Pro, removes ads and enables additional features.

From your first fish tank to your next fry colony, keep your care and breeding history organized with Aquarium Notebook.