This app was mentioned in 6 comments, with an average of 1.33 upvotes
I know what you mean about tagalog being a niche language..
I've just started and THIS has helped me get a basic understanding on the conversation side of tagalog. It eases you into it with taglish to help you understand how they structure their sentences. There is a free version if you want to sample it first.
I am also using THIS to learn words. It's not the best but I will use it until I find something better.
Good luck!
If you are just starting then this is the best place to start https://play.google.com/store/apps/details?id=com.junbarbosagmailcom.tagaloglessonsapppro
They even have a skype group so you can practice
If you use this it'll take less than 2 weeks because they use Taglish to teach the structure
https://play.google.com/store/apps/details?id=com.junbarbosagmailcom.tagaloglessonsapppro
After learning all the essential Tagalog words and structures you can slowly increase your vocabulary then substitute Tagalog words for the English words.
none of the above, the best is
https://play.google.com/store/apps/details?id=com.junbarbosagmailcom.tagaloglessonsapppro
no contest. punch me in the face if I'm wrong
If you are learning about Taglish, you will find this app useful
https://play.google.com/store/apps/details?id=com.junbarbosagmailcom.tagaloglessonsapppro