Pick your passport and tick the papers you hold. See, country by country, what they change: where you may be exempt from a visa, or get an e-visa or a visa on arrival instead of going to a consulate. Each answer comes with its rule, its source and the date it was checked. No sign-up.
The tool assumes a tourist visa, multiple-entry and already used, an ordinary passport, and a trip by air. Your case can differ: the app asks.
Pick a passport to start.
Your residence card and your visas can change this answer. The board counts them. No account needed.
If you are one of the first 50 testers, you get the tester build early: your days left and the date you can come back, counted from your own trips. You tell us where it is wrong.