Packs
One app, many packs. Insert a pack, practise, swap — each pack's progress stays saved on this device.
Claude Developer Practice
53 questions · 8 categories
Built in
Unofficial Claude Certified Developer – Foundations (CCDV-F) practice: Matthew Purcell's full practice question set, with rationales.
Have a licence key?
Enter a licence key to fetch the pack it unlocks and start practising it here.
Browse published packs
The community pack registry — insert one straight onto your shelf.
Loading the registry…
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.