To increase incomes with apps you could sell your app or add Ads.
To add ads you just need to create a StageWebView object and publish your ads through it. But ads are not rolling in so much money so another solution could be Flattr. Just like ads, Flattr are published with JS, which works very well, so theoretically you could show Flattr button in your app as well.

Now, i have not yet tried this solution yet and can not confirm it really works but the idea is good and interesting.

I will return after some tests are made to confirm if it works or not.

To be continued…