Easy Lighten Blend is a free iPhone app developed by Osawa Shunsuke. As a multimedia program, it allows users to easily create lighten blend photographs. In addition to lighten blend, the app also supports darken blend and averaging blend, providing users with various options to enhance their photos.

One of the main features of Easy Lighten Blend is the ability to create stunning photographs of fireworks and the starry sky. Users can select any number of photos to blend together, although it is important to note that selecting too many images may cause the app to crash due to memory shortage.

With its user-friendly interface and simple functionality, Easy Lighten Blend is a great tool for anyone looking to create beautiful blend photographs on their iPhone. Whether you're a photography enthusiast or just want to add some artistic flair to your photos, this app offers a convenient and accessible solution.