why not simply carrying your Aqua Calculator along with you?
-Record your tanks water parameters (chart or table view)
-Use a calendar with reminder functionality
-Calculate the amount of salt you need for your next water change or to adapt your tanks salinity (realistic data of nearly all available synthetic salt mixes included)
-Evaluate exact dosage of salts and liquid solutions for adaptation of Calcium, Alkalinity and Magnesium according H.W. Balling’s method.
-Convert units of all measured quantities of saltwater tanks (eg Salinity ↔ Density ↔ Conductivity)
-Read the built in Mini-FAQs via iBooks, to manage your tank even better