Contact

[email protected] is for anything about Math Challenge: help with the app, a purchase or refund, your account, or a mistake in a lesson (name the lesson).

Your account and data

To delete your account or part of your data, see Delete your account. Refunds: see the Refund Policy.

Post

Lattice Logic Pte. Ltd., 77 High Street, #10-12B High Street Plaza, Singapore 179433.