What’s in the name? Well, it’s all in the name, I guess, because you pay for the brand name. There are already chess apps available offering analysis, undo moving, giving hints, and those are open source and free to use instead of using ‘brainpower’. I very much like the MagnusTrainer, but this chess program does not add to the experience. If it really had a training mode, analysing your own strengths and weaknesses and offering the lessons, it would be a great step into integration of both the playmagnus and magnustrainer. Now, it seems to be solely for the money.
Add: yes, Frenzy is fun indeed!