Last updated 18 September 2026
These are the terms for using Nkwadaa STEM, built and run by Marcus Perry Agbolosu. By using the app you agree to them. If you're under 18, please use this app with a parent's or teacher's awareness, especially the account-based features described below.
Every chapter, lab, quiz, glossary entry, BECE practice paper and the calculator are free to use, work fully offline, and require no account. That will not change to a paid model.
An account is only needed for progress sync, Quiz Duel, Team Duel, Chess, Community boards and joining a classroom. You're responsible for keeping your password private and for what happens under your account. Give a real email address you can access — it's how you'd ever recover access or request your data be deleted. See our Privacy Policy for exactly what an account stores and how to delete one.
The Community boards, Quiz Duel, Team Duel and Chess are shared spaces with other students. Posting content or playing there, you agree to:
Other students can vote a post or comment out if it doesn't belong, and anyone can report content directly for review. An account that breaks these rules can be banned from posting, commenting and voting — a ban doesn't affect that account's ability to read chapters, use labs, or sync progress, since those aren't shared with anyone else.
You keep ownership of anything you post. By posting to a Community board, you're allowing other students to see it there, same as any forum. If you delete your account, your posts and comments stay up so other students' replies and conversations aren't broken, but your name on them is replaced with "Deleted user" — see the Privacy Policy for the full deletion process.
Nkwadaa STEM is provided as-is, built to help with real study and exam preparation, but without a guarantee that it's free of errors or that it will improve any particular exam result. If you spot a factual error in a chapter or quiz, we'd genuinely like to know — email us using the address below.
We may update chapters, features, or these terms over time. If these terms change, we'll update the date at the top of this page.
Questions about these terms, or anything about the app: marcusperryagbolosu@gmail.com