English Slovak Translator If you speak to this app in English - it will translate it to Slovak and read it out loud for you. You can also type in Slovak and get it translated to English. Not always a perfect translation.
uTalk Slovak This app costs $9.61 and is a quick and fun way to learn Slovak. It has recording, playback, photos quizzes, and lots more. It's good for learning basic Slovak phrases, not the entire language.
English Slovakian Dictionary This dictionary translates to and from Slovak and English. There are no definitions or examples provided in the translations - but there are learning tools like flashcards and translations built around synonyms. Definitely worth the $4.01.