WaveMaker is a great platform for enterprise and SME's because it can save a lot on resources and time. The price is very low compared to the other competitors of WaveMaker and the best thing about WaveMaker is its no lock-in policy, you can always download the code and work on other IDEs. Overall an amazing platform.
There is really not much to dislike about WaveMaker, but if there is something, I would like offline support(this is not available), since it is a cloud-based platform.
There were instances where we had specific requests and the support team was really helpful because they were really concerned about getting me a solution.
I have tested Android Studio, but I needed a complete IDE with commercial support, a team of competent people which can give me solutions in case of issues, and a tool easy to use, so I can concentrate on my projects. I am satisfied to date, starting in 2010 when I implemented on UNIX servers the applications compiled with Free WaveMaker (at that year).