The moment is yours.
The reaction is theirs.
Capture a moment and send it to your friends. They react with their real face — no filters, no retakes, no infinite scroll.
Three taps, one honest reaction.
Post a flash
Capture a photo or short video and send it to your friends.
React back
Your real face, captured in the moment — before the deadline.
Find your people
Your feed stays quiet until you add friends. No followers, no algorithm.
Built around the reaction, not the post.
Real faces only
Reactions are captured live with the front camera. No filters, no uploads.
On the clock
Every flash carries a reaction window. Honest reactions happen in the moment.
Friends, not followers
A private graph you build by hand. No public profiles, no follower counts.
No infinite feed
You see what your friends send and what they owe you back. Nothing more.
You own your circle
Block, report, and group friends on your terms. Quiet by default.
Distraction-free
Pure black, one accent, zero clutter — the moment stays the focus.
Good questions.
What exactly is a "flash"?
Why can't I upload from my camera roll?
What's the reaction deadline?
Is there a public profile or follower count?
How much does it cost?
How do I report someone or get help?
Stop performing.
Start reacting.
Knewflash is free. Your friends are waiting.