Not a critical feature (low priority) but crossword puzzles could be another way to do review of vocabulary.
It could be generated based on user own vocab or optionally generated by LingQ based on their recommended list of words or a mix of both options.
Reference :
QuickDic is an English-German dictionary app that I have used as a student and that is still available for download (it’s freeware). It contains a crossword puzzle creator.
There are also tons of websites with crossword puzzle generators, although none of them seems to be aimed directly at language learning.
And there is software for crossword generation. Genxword creates crosswords based on a word list. https://github.com/riverrun/genxword
If you are not the programming-affine person ChatGPT can both guide you through the installment process and create a script for you to automize the process for your individual needs.