Excercise app in Android or iOS.

Hi, I have an android app that need to be developed. Can you please take a look at the description in the link and let me know if you can do it, and how long does it take, and how much will you charge for it. I want to start with Android version, and potentially add iOS version later.

And if you can send me some past android app screen shot, that'll be great. Thanks.

https://docs.google.com/document/d/1JgOOd468HWGWhqQBmThfjOF-Mn-rvQJz08aJYHJFqlg/edit?usp=sharing