Terms of use
Last updated 12 October 2026
These terms cover using Bright Belts tools, including NumNinja. By creating an account or using the tools, you agree to them.
A free beta
The tools are free and still being built. Features may change, and things may occasionally break. We work hard to keep practice data safe, but the service is provided “as is”, without guarantees.
Accounts
- Grown-up accounts are for teachers, parents and guardians aged 18 or over.
- Children's profiles are created and managed by a parent, or by a teacher for classroom use.
- Keep login cards, picture passwords and PINs private to the child they belong to.
Fair use
- Use the tools for learning. Don't try to break, overload or get around the security of the service.
- Teachers: only add students you teach, and follow your school's rules on student data.
Your data
Practice data belongs to the child and their family or school. How we handle it is explained in our privacy policy.
Changes and contact
We may update these terms as the tools grow and will note the date above. Questions? Email hello@brightbelts.com.