Map Notes is a free Android application developed by Palm Lab that falls under the category of Travel & Navigation and the subcategory of Maps & GPS. The app allows the user to create a map with various annotations such as markers, balloons, text, lines, and ovals. The markers and lines on the map automatically stretch and shrink when the map is zoomed in or out.

The user can save the map as an image file and share it via email, Twitter, Facebook, and other social media platforms. This feature is particularly useful when inviting friends to one's home or sharing a route to a specific location. The app also includes an address search function and the ability to show the user's current location, making it a reliable guidance application.

Overall, Map Notes is a convenient map making application that provides users with a variety of annotation options and sharing capabilities.