Use it yourself, it's free!
In a few seconds you're done!
<%= simple_form_for(resource,
as: resource_name,
url: registration_path(resource_name),
wrapper: :inlabel
) do |f| %>
<%= devise_error_messages! %>
<%= honeypot %>
<%= f.input :full_name, required: true %>
<%= f.input :email, required: true %>
<%= f.input :password, required: true %>
<%= f.submit "Sign up", class: 'btn btn-primary' %>
or <%= link_to 'Sign in', new_user_session_path %>
/ <%= link_to 'Forgot your password?', new_password_path(resource_name) %>
<% end %>