Sen: Talk in Lines

A line you draw returns on their screen — at the exact speed you drew it. No words needed. With a friend, or a stranger. Open a board and draw one quiet line.

A message made of lines, not words.

Sen is a new way to talk — using nothing but the lines you draw with your finger. No text. No stickers. Just a single line, drawn by your hand.

That line comes back to life on the other person's screen, at the very speed you drew it. Draw slowly, and it arrives slowly. Draw in a rush, and the rush comes through. Even the pauses and the hesitation are carried over — so the feelings that don't fit into words arrive intact.

■ How it works

1. Open a board (your friend needs no app and no account)
2. Send one link (by message, email, or QR code)
3. Draw together on the same screen

■ Features • Real-time: watch the other person's line grow right in front of you. A small glow marks their fingertip. • Replay at drawing speed: open a board later and the lines return in the rhythm they were drawn. • Plaza: a place lined with boards that strangers have left open. Find a line you like, and add one of your own. • Color is your identity: one color per person. No names needed — just the color of the ink and the breath of the lines. • Login is optional: draw without an account. Sign in to keep your boards on a shelf.

■ A safe place We have zero tolerance for inappropriate content and abusive behavior. You can report a board or hide a specific person's lines. When we receive a report, we review it and take action — including removing content and suspending users — within 24 hours.

For sleepless nights. For days when the words won't come. Connect with someone — through a single line.