I activated the paid version since my first contact with the app to give me everything she has the best.
Now I do not know whether to continue with the paid version or to stay with the standard version.
What do you think?
Pro or standard?
This really is based on you and your experience. Do you like what you have - have you suggested any improvement. And whatever else you are benefiting from that you would not necessarilly have if you dropped from the premium to free version.
To be honest I can't tell you nor should anybody else. This is your choice and seeking outside validation is only seeking an answer you already have chosen.
As to how many are using pro version are very high numbers.
I'm not a Pro user and am happy with what I have.
Edit: March 2019: Actually, lately SL has been having a lot of connectivity issues with difficulty for users in saving code on Code Playground as well as sometimes during challenge quizzes. However, these issues seem to be shared by both Pro and ordinary users.