IWTM Calculator is a specialized Android application developed for industrial and maritime water treatment calculations. It supports closed loop systems, steam plants, and marine installations such as sea chests and seawater pumps. The app enables engineers to calculate system volume, expansion tank capacity, pump flow, heat/cooling power, and water hardness across multiple unit systems (metric, imperial, US gallons).
Integrated modules provide tendering texts, dosage calculations, and direct product references for Elysator, Purotap, and Chlorinator devices. These reflect IWTM’s chemical‑free water treatment solutions, which comply with Europe’s stringent VDI2035 water quality standards. By focusing on corrosion prevention and sustainability, the app helps engineers prepare accurate tenders, optimize system reliability, and reduce chemical usage.
Tech stack: Android, Java, Unit Conversion for metric, imperial, and US gallons, Custom Calculation Engine for system volume, pump flow, and hardness values, Link Handling for direct product references









