Terms of Service

Effective September 30, 2026. Sumday is provided by IAM_DEV. Contact: support@iamdev.me.

Using Sumday

Sumday provides arithmetic practice, printable worksheets, and local progress records. You may use it for personal, family, and classroom learning, subject to the terms attached to your Microsoft Store installation. Parents and caregivers choose the exercises, goals, and profiles appropriate for their children.

Your profiles and files

You retain control of the names, practice records, and files you create. Sumday does not provide a hosted account or cloud backup. Keep exported backups in a safe place and review the selected mode before importing, resetting history, or deleting a profile.

Replacing local data may overwrite existing records. Previously exported worksheets and backups remain in their selected folders until you remove them. Local recovery copies help protect against import mistakes but do not replace a separate backup.

Educational use

Sumday supports regular practice and review. Its accuracy statistics reflect answers submitted in the application; printed worksheets are not automatically graded or included as completed screen practice. Parents and educators can use these records alongside their own observation and teaching.

Worksheets and intellectual property

You may print and share the worksheets you generate for educational use. The Sumday name, application artwork, and software remain the property of their respective owners. Third-party software and font components retain their own licenses.

External services

Microsoft Store, review pages, email services, and your PDF viewer are separate services or applications with their own terms. Sumday opens them only when you choose the corresponding action.

Privacy and support

Our Privacy Policy describes local storage, exports, and support communications. For help, contact support@iamdev.me.

Updates

Features and these terms may be updated with future releases. These terms do not limit any rights you have under applicable law or the Microsoft Store terms governing your installation.