CubTutor guards the apps you pick on your kid's iPhone. To open them, your kid answers a few questions at their level — then play unlocks for exactly the time you set.
Download on the App StoreYou set the rules once. The phone enforces them every day — without you having to be the bad guy.
Choose which apps wait behind questions, how many questions to ask, and how many minutes of play a correct round earns.
When your kid opens a guarded app, a question at their grade level appears instead. Answer right — the apps open for the window you chose.
Daily practice, accuracy by topic, and streaks — on your own phone. If your kid works with a tutor on CubTutor, the tutor's notes reach you too.
No trial countdowns. Basic math stays free for as long as you use it.
Subscriptions are made from your phone, never your kid's — locked subjects on their phone simply say a grown-up can unlock them.
If your tutor uses CubTutor, their curriculum drives the questions on your kid's phone — so the practice between lessons is exactly what the tutor planned. You'll get their session notes and a weekly progress email, automatically.
Yes. Apple's own Screen Time framework never allows the Phone app to be blocked — calls always work. CubTutor only guards the apps you personally choose.
No. There is no "ignore" or "ask later" button. The guarded apps stay closed until a question is answered correctly. Everything else on the phone works normally.
No. There are no purchases on the kid's phone at all. Anything locked shows a note that a grown-up can unlock it — from the grown-up's own phone.
Kindergarten through 12th grade. Questions are matched to the grade you set, and you can change it any time.
Set it up in a few minutes — pick the apps, set the minutes, hand the phone back.
Download on the App Store