It installs straight from this page in a few seconds. There is no app store to visit and nothing to pay. Once it is on your phone, you can practise with no data at all.
Checking how your phone installs apps.
Your questions, notes and answers are kept on the phone. When the data runs out, the practice carries on, and your work syncs the next time you are online.
The app itself is a few megabytes, and after the first visit most of what you see is already on the phone rather than fetched again.
It sits on your home screen with its own icon, opens full screen with no browser bar, and keeps you signed in.
Teachers: put this code on the board or print it on a handout. Each learner scans it with their phone camera, lands on this page, and installs in seconds. No usernames, no store accounts, no waiting.
classmastergh.com/install
It installs from the browser instead, which means no store account, no 60 MB download and no waiting for updates to be approved. You always have the newest version. A Play Store listing is coming, and it will be the same app.
Installing and practising is free. Schools pay for the class tools their teachers use, and teachers themselves never pay.
No. The app is a few megabytes. Subject packs you keep for offline practice add a little more, and you choose which ones to keep.
You are most likely inside the browser that WhatsApp or Facebook opens, which cannot install apps. Tap the menu in the corner, choose "Open in browser" or "Open in Chrome", then come back to this page.
Press and hold the icon on your home screen and choose uninstall, the same as any other app. Your progress stays in your account.