Paste a sentence in Arabic script, from a text message, a song or a show, and the explainer splits it into words. You get a translation of the whole sentence, and for each word its meaning and its pronunciation in Arabizi. Pro adds a note on the grammar. You can also type in Arabizi and it turns into Arabic as you go.
Lebanese Arabic packs a lot into a single word. ما بعرفو (ma ba3rfo, “I don’t know him”) is a negation, a verb conjugated for “I”, and an object pronoun, written together. Seeing a sentence taken apart is how you start recognising those pieces on your own.