FlagDeck Support
FlagDeck is an offline app for learning the flags, capitals, and currencies of 249 countries using spaced repetition. If you need help, please see below.
Contact
Email: support@therene.co.kr
Bug reports, feature requests, and data corrections are all welcome. We usually reply within 2–3 business days.
Bug reports, feature requests, and data corrections are all welcome. We usually reply within 2–3 business days.
Frequently Asked Questions
Does it work without internet?
Yes. All data is bundled in the app, so it works 100% offline — on planes, subways, anywhere.
Are there ads?
No. FlagDeck has no ads and no tracking whatsoever.
Where is my learning data stored?
Your nickname, scores, and review history stay only on your device and are never transmitted. Uninstalling the app removes them.
How does review work?
The SM-2 spaced repetition algorithm automatically queues missed and aging flags, showing them again right before you'd forget.
Where does the country/flag data come from?
Country, capital, and currency data is based on Wikidata (CC0); flag images on flag-icons (MIT). If you spot an error, please report it via the email above.