Hello!!
We can develop an android app for you with your desired functionality mentioned below:
There would be a rotation app with two modes of operation. In normal mode it would work same as that of other similar apps and in up right mode it would get the original rotation feature of the device. Apart from it, all app icons would rotate with the phone's orientation i.e they would always upward faced not depending on the phone's angle.
The maps app would also be having the above effect on orientation.
Kindly open the PMB (Personal Messaging Board) to discuss further regarding your project with our technical team and move forward.
Regards,
SmarTech Solutions