Get the app

Version 1.0.1 · 18 August 2026 · Android 5.0 and above

Works on every phone from roughly 2015 onwards. Older 32-bit phone? Use this one.

Installing

Open the downloaded file from your notifications or the Files app.
Your phone will warn that the app is from outside the Play Store — that is expected, because we distribute directly. Tap Settings and allow installs from your browser, then go back and tap Install.
Open the app and sign in with your Google account. Two full chapters, one full mock paper, and everything free is open immediately.

Why not the Play Store? We sell directly so the full plan costs ₹1,000 instead of carrying a store commission. The app asks for no permissions beyond internet access, collects nothing but your email, and everything you study stays on your phone — see the Privacy Policy.

Updating

New versions are announced inside the app. Download the new file from this page and install it over the old one — your progress and your plan are untouched.

Trouble?

Write to principalsarthi@gmail.com with your phone model and what you saw. A person answers.