Thanks for your comment. What their free tier provides, I doubt that anyone would ever complain. The issue that I have addressed in this article is the poor customer support and suddenly terminating a free instance and the account, with no notice. You can see the screenshots of their customer support. After such hideous support, even if it is freely given to me now, I still won't go for it. So far I know, it happened to many people who signed up. In your case, if it is working, then great!