Sign Up concept

The task was to make a minimum number of forms to fill out, so that the user was not afraid and he downloaded the application and continued to register, and did not delete it. So I made just 3 basic fields:
1. Name
2. Password
3. Email
And a quick registration using social networks. The re-entry fields were removed by porol, this irritates the user and takes extra time for the user who wants to quickly register and start using the application