I am still young and love apps, I design apps too. I love testing apps and that why I am here. I can be technically involved in helping your app improve and that gives me an edge over others.
I would test your app on the current most used OS (as of 09/22/2016 its Android Lollipop and Marshmallow)
I will perform different types of testing suitable to your app:
I would test all the features that your app provides and I if you like, I will record a video on a DSLR so that it's of better quality and my review gets you more value. I can certainly provide design improvement ideas and new features.
My work would also include screenshots, bug reports and I tell you where the app lags.
My services would cost you $5. I will do the job within 24hrs for mere $5 extra. :)
Android Mobile Phone
App testing and review
Test your app on Android M and provide a personal review, bugs % design improvements.