I rarely write reviews, but I have to say--TDC is one of THE best Tagalog resources, and to have it easily accessible on iOS? Practically a godsend.
I'm learning Tagalog as a hobby and this dictionary has made it 10x easier. It has all of your 'standard' dictionary features; part of speech, definition, etc.. but it also has usage notes, root/affixes, conjugation, example sentences, verb focus, word frequency, and so so so much more. There are also helpful features for intermediate/advanced learners like affix analysis and a corpus tool.
One day, I'd love to see a flashcard function on the app (like the one on the website), but aside from that, this app is absolutely perfect. One of my most-used Tagalog resources ever!