Android App: Keyer
A very simple but quite handy app
Keyer is my second app for Android. It's a lot simpler than Wrangler, but it does what it is built for well. Again, it is an app aimed at people creating videos. In these days of advertising it is very common to film someone using a mobile phone and then replace the screen later on in post-production. I've had to do this many times, and the inconsistent tracker markers and background colors I get can be tricky to work with. Thats why I created Keyer.
You select a background color and tracker markers (or turn them off). Having a consisten background color and good tracker markers makes the process of replacing the screen in post-production a lot simpler. Test it out, it is free.