Packs
One app, many packs. Insert a pack, practise, swap — each pack's progress stays saved on this device.
Capitals of the World
45 questions · 5 categories
Built in
Expert-level practice on the capital cities of the world — moved capitals, multiple-capital countries, and the ones map buffs reliably get wrong.
Browse published packs
The community pack registry — insert one straight onto your shelf.
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Insert a pack
From a pack's files (pack.json + questions.json), a single bundle .json, or a URL — a GitHub pack repo works directly.