Hi,
I understand your requirement completely and can Add splash screen in your Android app.
I am expert Android developer.
I will add splash screen to display for time of your choice, and text also you will be able to change.
(Will you do this changes in code? If yes, I will let you know where you can do so you can change easily.)
I can also do other changes like removing text field as you want.
I will provide you best service with perfect communication.
Please send me a message so that we can discuss more,
Thanks,
Swapnil Chouhan