How the scoring actually works.
RoboRebbe is the first and only app that scores the chanting itself — not a quiz about it. Here's what's happening under the hood, in plain language, so you know exactly what your child's numbers mean.
First, the student hears it
Every verse starts with a professional cantor's recording of that exact verse — the student's real parsha, not a sample. Words light up as the cantor chants them, so the eye and the ear learn together. The recordings come from PocketTorah and cover all 54 Torah portions and every haftarah.
Melody % — the trope tune
When the student chants the verse back, the app tracks the pitch of their voice — the rise and fall that carries the cantillation (trope). It then compares that melodic shape, word by word, against the cantor's version of the same verse.
The comparison uses dynamic time warping, a standard technique for aligning two performances that don't run at the same speed. In practice that means a student who chants slower than the cantor — as every beginner does — is never penalized for pace. The score asks one question: did the tune go where the tune goes?
Words % — the Hebrew
At the same time, speech recognition listens for the Hebrew words themselves and checks each one against the verse. Swallowed syllables and skipped or garbled words get flagged; everything else passes. It grades pronunciation, not accent — kids don't need to sound like anyone but themselves.
Word-by-word verdicts
The two channels combine into one score per attempt, and — more usefully — a verdict on every single word: solid, needs a melody touch-up, or needs another look at the Hebrew. Instead of "run it again," practice becomes "fix these three words." That's the difference between repetition and progress.
The 85% mastery line
A verse counts as mastered at 85% — a bar high enough that the verse is genuinely performance-solid, without demanding robotic perfection from a twelve-year-old. Each mastered verse drops a candy in the jar; when the whole reading is past the line, the student is candy-throw ready.
What the scores are — and aren't
The scores are a practice aid, built to be honest rather than flattering. They are not a ruling on ritual readiness, and RoboRebbe is not a religious authority — it's a practice coach. Nusach, community custom, and the final "you're ready" always come from your own cantor, rabbi, or tutor. RoboRebbe just makes sure the practice between those lessons actually happened — and shows everyone exactly where the work went.
A note on privacy
Melody scoring runs on the device. For pronunciation, short audio clips are scored and not kept — recordings aren't tied to a name or used for anything but the score. No ads, no third-party analytics in the app. The details live in our privacy policy.