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spaced-repetition

All Country Flags: Learn 254 — offline flag quiz and learning app with spaced repetition, 35 similar-flag groups, capitals mode, world heat map and 254 countries + territories. No account, no tracking. By lapnito.cz s.r.o.

AI-powered Cloud Architect LMS — dual-cloud AWS+GCP certification training with gamification, spaced repetition, quests, leaderboard, and cert pathway visualizer

https://cloud-architect-trainerv2-410866387199.us-central1.run.app/

Turn any AI coding agent into your personal tutor. One file, spaced repetition, visual exercises, adaptive difficulty. Works with Claude Code, Cursor, Windsurf. https://srs.voxos.ai/