Hi Product Hunt! I'm João, and I built Notai with Jéssica to help strangers become friends and feel less lonely.

We kept seeing the same thing in Lisbon: people on their own at cafés, gyms and coworks, a metre from someone they'd happily talk to, both looking at their phones. Social apps moved friendship online, and dating apps make every approach feel romantic. We wanted the opposite: an app whose whole job is to get you off it and talking to the person at the next table.

How it works:

Scan the Notai card on your table. No download, no sign-up.
Add a selfie of the day and say what you're up for: lunch, coffee, work or just a chat.
See who else here is open. A chat opens only when you both say hi.
Find each other in minutes, then tap "We met".
Your photo and chats are deleted when you leave. Company, not dating.

Try the live demo (no install): notai.pt/v/demo

We'd love your honest feedback:

Would you scan the card if you were eating or working alone? What would stop you?
What would make you feel safe saying hi to a stranger?
Which places should we start with: cafés, coworks or gyms?

Thank you!