CRM for smartphone (android) ?

Question

Android

The task is to quickly tag incoming calls on Android so that you can not lose contacts with customers.
It is desirable to be able to unload numbers.
Is there something like that?

Answer 1

What you described is written quite quickly, based on some dialer (including the standard one). CRM is still more powerful ( here and here )

Answer 2

Is it quickly written, meaning, quickly saved to the phone's notebook?

Answer 3

www.opencalls.me - can mark calls with tags and upload directly to a table on Google.Drive.
You can connect several androids to one account (write calls to a common table).