Daylight for iPhone is a utility app designed to help users track changes in daylight throughout the year. It provides notifications when days start to lengthen, making it especially useful during the long winter months. This app is free to download and offers a straightforward interface that allows users to easily understand and monitor daylight variations.

The app serves as a helpful tool for those living in northern regions where daylight can drastically change with the seasons. By keeping users informed about daylight hours, Daylight enhances awareness and can help mitigate the effects of seasonal affective disorder (SAD) by promoting outdoor activities during brighter days.