Problem with the apps

[Android Central Question]

I installed an app, after finishing installing it does not shown me the open option, it only displayed done option.
Iam thinking that it is app used for hacking
If it is true, what should i do to protect my mobile, being hacked,
Please help me with this

 

[B. Diddy]

Welcome to Android Central! Which app did you install, and where did you install it from? The Play Store, or somewhere else?