Instead of having a new messaging app, just have a contact app that remembers what app you use to get in touch with everyone. When you want to message someone, the contact app will open the relevant messaging app for you. Receiving messages can happen through your phone's/PC's notification system, so it's not so much of a problem.
Instead of having a new messaging app, just have a contact app that remembers what app you use to get in touch with everyone. When you want to message someone, the contact app will open the relevant messaging app for you. Receiving messages can happen through your phone's/PC's notification system, so it's not so much of a problem.