Lumm is a zero-text check-in for couples. No chat, no messages to write — just one button that sends a haptic pulse and a soft glow to your partner's phone.
Create a pair, share a one-time code with your partner. That's the only setup — ever.
One button. No text to write, no emoji to pick. Just tap it when they're on your mind.
Their phone glows and buzzes instantly — or the moment they next open the app.



Chat apps are for saying something. Lumm is for saying nothing — just "you're on my mind" without composing a message or starting a conversation. It's built for the moments where a text feels like too much, but silence feels like too little.