Northstar Tutor

About

Northstar Tutor helps you understand an idea, see it explained, and practice what you have learned. Explore biology, chemistry, perceptual ability, reading comprehension, mathematics, and Bosnian/Croatian/Serbian grammar. Available lessons combine visual explanations, worked examples, guided practice, and checks for understanding. Start a one-time, continuous 10-minute classroom preview without signing in. No payment method is required and the preview does not start a subscription. Membership accounts can use Sign in with Apple, Google, or email and password. Existing public language lessons remain free. The iPhone and iPad app includes native account and subscription controls, classroom navigation, sharing, reload, connection retry, and a separate read-only reviewer demonstration. Available memberships use Apple In-App Purchase; the purchase screen shows the localized price and renewal terms. Account deletion does not cancel a store subscription. An internet connection is required for the hosted classroom. This iOS version does not access your camera or microphone. AI-generated explanations can make mistakes. Northstar Tutor is a learning supplement, not a guarantee of examination results or a certified language qualification. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/