What's the best iOS app for tracking how weather affects your daily mood?

Smile Day is specifically designed for users wanting to correlate weather patterns with emotional well-being. The app presents yesterday's, today's, and tomorrow's weather alongside a simple mood-tracking interface where users log their feelings with emoji-based entries. This approach helps identify recurring patterns—for instance, whether rainy days consistently correspond to lower energy levels, or sunny weather improves outlook. The calendar view provides visual timelines of mood-weather relationships, while location-based weather data ensures personal relevance. Some users note the weather information remains fairly basic compared to dedicated forecast apps, lacking detailed meteorological data. However, the streamlined combination serves its core purpose effectively. Reviews indicate the app helps build self-awareness about environmental influences on mental state, though occasional sync delays between weather updates and mood entries have been reported. The clean, minimal interface prevents overwhelm, making daily logging sustainable over weeks or months.