Help Center
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Public tutorials and free tools work without an account. Lessons, review, and account settings ask you to sign in so NumDojo can load the right progress and account information.
Tutorials and free tools
Read method guides or use the virtual Soroban and printable Trachtenberg worksheet without an account.
Lessons and practice
Sign in to continue your learning path, open a lesson, or practise the skills you have studied.
Review queue
See which practice problems are due and work through your scheduled review session. Sign-in is required.
Account settings
Change display settings, manage supported review reminders, download your data, or delete your account.
Plans and billing
Review the Free plan and the invitation-only UK Pro pilot. Pro Max is not open to new subscribers.
Frequently asked questions
Read answers about getting started, learning methods, computer Battle practice, parents, and safety.
Account access
Create an account to save learning progress. If you already registered, sign in with the same method you used before. Password reset is available for email-and-password accounts.
Younger learners and managed accounts
Read how NumDojo handles child privacy and parental consent. Managed family, teacher, school, and district onboarding is not open during the controlled launch.
Still need help?
Use the support form for account, technical, or billing problems. Include the page, device, browser, and what happened. Do not send passwords, payment card details, or children's personal information.