Support

Questions about Lumen or something that isn’t working as expected? Let us know so we can help.

Report a problem or a question error

Include your device model, operating system, and app version. For a quiz issue, include the grade, chapter, question text, and what seemed incorrect.

You can also open an issue on GitHub. Remove names, photos, and other personal information from public screenshots.

Understand local progress

Progress and preferences stay on your device by default. Clearing storage, uninstalling the app, or clearing browser site data removes the local profile. Avoid those steps if you want to keep your current progress.

Change your preferences

Use Preferences to change your name, grade, theme, and goals, or to remove or replace a profile photo. Read Data controls before resetting the app.

Download availability

Lumen is marked coming soon on Android and iOS. The download page will show store links when they are available.

Privacy questions

Read the Privacy Policy for local storage, optional network features, and your controls. Contact us by email for private questions.