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Sefaria delivers 3,000 years of Jewish texts (Torah, Tanakh, Mishnah, Talmud, and more) to your phone.
Search by keyword or browse the table of contents to explore texts, translations, and commentaries. Plus - the entire library can fit on your phone (500MB) so you can learn while you're offline.
the best part of this app is that while you learn something you simply click on the text to bring up all meforshim, pesukim, marei makomos, and more...
I would suggest you should take a look first at the [Login to see the link] -as the buttons in the app are not visible on some devices. (if anybody can fix that would appreciate).
to change to Yiddish click on the small א in top right corner.