On This Day is a free Android app developed by Christian Fjeld, which provides daily historical facts related to entertainment, science, war, music, sports, politics, and much more. The app also allows you to watch births and deaths of celebrities, musicians, movie stars, politicians, and other famous people.

One of the best features of On This Day is the ability to choose which date to explore, allowing you to learn about historical events that occurred on a specific day. The app also groups events by centuries, making it easy to navigate through history. Additionally, you can choose events from six different Wikipedia languages, ensuring that the information you receive is accurate and up-to-date.

Overall, On This Day is an excellent app for anyone interested in history. Its user-friendly interface and informative content make it a great addition to your daily routine.