Good overview of the different BaaS services out there. If you don’t want to rewrite your whole app you might want to consider using Parse Server. In our blog post we looked at all 3 available solutions from a developer’s perspective. https://medium.com/adminca-com-blog/parse-is-dead-what-are-the-possible-solutions-9de972c1b9ed#.crq6yv2b0
Let me know what you think about it!