Estimate together, without the overhead.
Create a room, share the link, vote on a Fibonacci deck, reveal together, start a new round — synced live between everyone in the room. No accounts, no subscriptions, nothing to install.
How a round goes
Three requests, one shared room. Every participant sees the same state at the same time — reveal shows everyone's card, plus the average of anything numeric.
Create or join
Pick a name, create a room, and share the link — or drop in a room code someone sent you. Nothing to sign up for.
Vote in private
Everyone picks a card. Who's voted shows up live — what they picked stays hidden until the room reveals.
Reveal, discuss, repeat
One click flips every card at once. See the spread, talk it out, then start a new round when you're ready.
Permissionless
No host role — anyone in the room can reveal, start a new round, or edit the topic.
Actually live
Votes, joins, and reveals push to every open tab instantly — no refresh, no polling.
Fibonacci + wildcards
1, 2, 3, 5, 8, 13, 21, plus a ♠ wildcard and a ? pass — both excluded from the average automatically.
Nothing to maintain
Rooms expire on their own after 4 hours idle. No accounts to manage, no data to clean up.
Want to build your own?
The code here is private, but the behavior isn't a secret. proto-specs has a code-free, platform-agnostic spec precise enough that another team — or another LLM — can recreate this app's behavior from scratch: the data model, the full API contract, realtime and concurrency guarantees, every frontend edge case, down to exact validation predicates instead of vague categories.