Koush has been a pretty popular name around Android for most of the time that Android has been in existence. He's created some very popular apps, in fact all of his apps have become pretty popular. Like ROM Manager, Helium, AllCast and now Mirror and Inkwire which are his newer apps. The developer had been thinking about how much these apps should cost his users. As he does have to pay to keep the servers up and running for these apps - not to mention taking care of his family. But the price for both apps are actually $0.
Mirror, which is a screen recorder app, will remain at $0. However, you're recordings will have watermarks on them. Of course, that can be removed for an in-app purchase. Inkwire is going to be free for non-commercial use. This is kind of a remote support app. So if your mom or dad is having issues with their smartphone, you can draw on their screen and walk them through whatever issue they are having. Without actually needing to be in the same room with them. While Inkwire is going to be sticking to the $0 price tag for non-commercial usage, Koush does reserve the right to change that if server costs get too high. The changes to Inkwire are pretty minimal, it basically went from being "unreleased" in the Play Store, to being officially available.
However, Mirror has a bit more changes here. One of them being the name. It's now "Screen Recording and Mirror". It brings GIF encoding, as well as the ability to mirror to network devices - this includes the Apple TV and Fire TV, and native screen recording. These are in-app purchases, by the way. So GIF encoding is $4, mirroring to network devices is $5 and $10 for the full app unlock. Screen Recording and Mirror do only work on Android 5.0 Lollipop and higher, though. You can pick up both of Koush's new apps over in the Google Play Store right now. They are free with in-app purchases, which is a good thing as you can see if you like the app before dropping any cash down on them.