Most restaurant pickers spin a wheel for one person. 531 is built for two: each of you shapes the decision, then it commits you to one table.
Type a city and an area: Lisbon, London, New York, Tokyo, Mexico City or a small town. 531 maps the restaurants around that point from OpenStreetMap and, where available, Google. You pick five cuisines, your partner keeps three, you pick one, and 531 draws a single restaurant that fits your time and diet.
A random pick ignores what either of you wants, so one person vetoes it and the argument restarts. Alternating, limited turns give both people a say and end with a result neither can blame on the other.
It does not store restaurant data, take bookings or rank places by paid placement. It shows one restaurant, live, and gets out of the way.
Yes. 531 is free during the beta and needs no account.
531 works wherever OpenStreetMap has restaurants mapped, which covers most cities worldwide. Coverage is richest in large cities.
Yes. Set a diet before you play and 531 only counts places that offer those options.