Privacy Policy

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

What stays on your device

Sumday stores the child names you enter, grades, goals, practice settings, questions, answers, elapsed practice time, rewards, mistakes, and worksheet history locally. It also keeps preferences, a local launch counter, your review-prompt choice, and an application log used for troubleshooting.

There is no account system, cloud synchronization, analytics service, advertising service, or automatic upload of your child profiles or practice history.

Children and parental use

Sumday is designed for parents and caregivers to set up practice for children. You may use a nickname instead of a child’s full name. IAM_DEV does not receive these local profiles through the application.

Backups and exported files

PDF worksheets and JSON backups are written to locations you choose. Backups include all profiles and history. Sumday saves a local recovery copy before importing a backup. These files are not password-protected or encrypted by Sumday; protect them with your device’s access controls and share them only with people you choose.

Your controls

You can edit or delete profiles, reset the active child’s history, and export or restore a backup. Resetting or deleting records does not delete copies you previously exported or local recovery files. Remove those files separately if you no longer need them.

External links and support

Store and review buttons open Microsoft services, which follow Microsoft’s privacy policies. Contact support opens your email application. We receive only information you choose to send in a support email. Do not include children’s personal information or a complete backup unless you decide it is necessary for your request.

This website

This site provides product information and links. It has no account form or document-upload form. Your browser connects to the site’s hosting service when loading pages; that service may process basic connection information. External services linked from this site have their own policies.

Changes and questions

We will update this page if Sumday’s data handling changes. You can contact support with questions about this policy.