Everything the app does, and why
ONZU looks like a game. Underneath it is a spaced-repetition engine tuned for Years 3–6. This guide explains every feature, including the parts you can't see by tapping around, so you know exactly what your child is practising and why it sticks.
The one-paragraph version
Every answer your child gives updates a private skill score for that exact fact, word or scenario. Weak items come back sooner and more often; mastered items fade into occasional review. Wrong answers are never punished with lost points. They trigger a short Fix-it (do it once, correctly) and a faster return of that item. The games, pets and streaks exist to make a ten-minute daily session something kids choose. That's the whole trick, and it's the same one behind flashcards, Anki and every serious memory system, wrapped in something a nine-year-old actually opens.
My QA team is in Year 4 and Year 6
ONZU started as a homework helper for my own two kids. Every feature in this guide shipped because it survived contact with two real children. Everything they got bored of was cut.