WaterReserve

WaterReserve lets you plan your water supply one day ahead.
Enter your today’s intake and tomorrow’s goal (in liters), tap CALCULATE RESERVE, and instantly see if you’re all set or how much more you need for tomorrow.

Features:
• Simple and fast input
• Positive/non-negative validation
• Output shows reserve needed or surplus
• Copy/share for reminders
• Reset in one tap
• Clean, easy UI

Stay prepared—WaterReserve keeps hydration rolling day to day!