A free program for Android, by Matthew J Williamson.
Flag Maker is an application that can help you design your own flag in minutes. The app contains a large number of base designs, emblems, and colors to help you get started right away. All you have to do is combine them in the right way, resize them, rotate them, or change their colors, and you're done! It's that easy!
Once you're done, you can save them to your device or share them with your friends on social media. It's up to you!
The app contains dozens of base designs and hundreds of emblems, so there are a lot of possibilities for you to get started.
