Is there any penetration testing which detects any loop holes or security concern?
Hi , you can check this post , maybe will help you https://learn.techbeacon.com/units/how-get-started-mobile-penetration-testing-android
A fun side topic of testing you might want to look into is Mutation testing, this changes source code paths to see if the tests fail, i.e. sad paths have been tested in your code base. It’s not penetration testing, but it opens your thought process up to the inverse of what your code is capable of.