We are here to help you get the most out of Blackbook.
Reach us at [email protected]. We usually reply within 1-2 working days. Please include your app version (Profile → About) and device model so we can help faster.
Yes - you can start free, including the 30-day Boot Camp and thousands of practice questions. Some advanced features may require a subscription or a valid book code.
Tap Continue with Google (or Continue with Truecaller on phones that have the Truecaller app). You can also verify your phone later from your Profile.
The built-in dictionary and content you have already viewed remain available on weak or no network. Quizzes and fresh content need a connection.
Check your internet connection and make sure you are on the latest app version. If it persists, email us with a short description and your device details.
Open Profile → Redeem / Verify book and enter or scan your code.
See Delete your data, or email us from your registered address.