Help
Do I need an account?
No. There is no signup, login, or backend. Your progress stays on your device.
Will it work offline?
Yes. After the first visit, BrainSprint works offline as a PWA.
Can I move my progress?
Yes — Settings → Backup & Restore lets you export/import a JSON file.
How is XP calculated?
Base XP × accuracy × combo bonus × perfect bonus × daily bonus.