Frequently Asked Questions
Clear answers about access, favorites, billing, and the experience across devices—kept concise so you can get back to rest.
Quick filters:
Access
Do I need images or apps to follow the courses?
Access
Do I need images or apps to follow the courses?
No. Courses are intentionally image‑free and app‑independent. You can read and follow them from any modern browser, on any device, without installing anything.
Favorites
How do favorites work?
Favorites
How do favorites work?
Click “Favorite” in the catalog. Your list is stored in your browser (local storage), so it’s fast and private—but it may not sync across devices unless you use the same browser profile.
Billing
What payment methods are supported?
Billing
What payment methods are supported?
At checkout we display the available methods based on your region. If an option is missing, it typically means it’s not supported in your country or by your selected currency.
Access
Can I access the course on phone, tablet, and desktop?
Access
Can I access the course on phone, tablet, and desktop?
Yes. The layout adapts to mobile and desktop, and your progress stays in your browser. For the best experience, keep your browser updated and avoid aggressive “storage cleanup” extensions.
Privacy
Do you store my questions or favorites on a server?
Privacy
Do you store my questions or favorites on a server?
Favorites are stored locally in your browser. On this FAQ page, the “Ask a question” form is a demo: your message is saved locally only and a confirmation modal appears.
Troubleshooting
My favorites disappeared—what happened?
Troubleshooting
My favorites disappeared—what happened?
Favorites are saved in local storage. Clearing browser data, switching browsers/devices, using private mode, or disabling storage can remove them. Try the same browser profile and ensure storage is allowed.
No matches found
Try different keywords or clear the search.
Still have a question?
Send it in under a minute. We’ll confirm in a modal and store it locally for demo purposes.