Recite from the page and the mushaf follows along, turning pages for you. Skipped words and wrong words are marked in red and saved under Marks → Mistake for revision.

• Private: the listening happens on this device. No audio is uploaded.
• One-time download of about 130 MB (Tarteel's Quran speech model). After that it works offline.
• Start anywhere on the open pages. If you start elsewhere, it finds you.
• Tip: Hide words turns it into a memorisation test — words appear as you recite them.

It checks the words, not tajweed or vowel length. Like any listener it can be wrong — tap a red mark to see what it heard, and delete it if it's not a mistake.