Tanksmith

Tanksmith is a local-first logbook for reef aquarium keepers. The app requires no account and has no in-app cloud sync, ads or subscription. Usage analytics are optional and stay off until you allow them. TRACK THE DETAILS THAT MATTER • Add display, frag, or quarantine tanks • Log alkalinity, calcium, magnesium, nitrate, phosphate, salinity, temperature, and pH • See your latest readings and chart their history • Keep livestock records with species and placement notes • Track equipment and service intervals so overdue maintenance is clear • Switch between gallons/°F and liters/°C READING TRENDS AND REPORTS Tanksmith Pro calculates the daily equivalent of the change between your latest two alkalinity, calcium, and magnesium readings. It is an observed-change summary, not a dosing recommendation or prediction. Additions, water changes and testing variation can affect the result. Generate a Tank Report PDF with tank details, the latest reading for each parameter, livestock, and equipment for your own records or to share when asking a community for help. START FREE The free app includes one tank, 40 parameter readings, and three livestock entries per tank. ONE-TIME PRO UNLOCK Tanksmith Pro is a one-time purchase. It unlocks unlimited tanks, readings, and livestock, plus recorded-change trends and Tank Report PDFs. No subscription. YOUR RECORDS Tanksmith itself does not transmit your aquarium records to a developer server. Depending on your Android backup settings, the operating system may back up app data. Google Play handles purchases through its billing service.

Clarifies the optional analytics notice, including automatic Google Play purchase events.