Window Opened Dates

Window Opened Dates helps you remember when each room was last aired. In winter, it is easy to forget bedrooms, closets, north-facing rooms, laundry areas, and corners behind furniture. This simple tracker shows the last window-opening date for every room, how many days have passed, and which rooms may need fresh air today. Features: - Track the last ventilation date for each room - One-tap opened today records - Winter check mode for forgotten rooms - Room notes for condensation-prone spots - Local reminders - JSON, CSV, and ZIP export/import - iPhone and iPad support - No ads, no analytics This app is a household habit tracker. It does not diagnose mold, building conditions, or health risks.