Everyone is shipping.
Sharing an idea before you build it is messy. Threads scatter, replies disappear, and the signal you need is buried in DMs.
Spark is a free-flowing canvas where founders share early product ideas, invite people to comment, and collect demand signals — interest, willingness to pay, would-use — before writing a line of code.
Join the waitlistSee how it works →

Sharing an idea before you build it is messy. Threads scatter, replies disappear, and the signal you need is buried in DMs.
People click "interested" to be polite. Polite is not signal. You need price, intent, and a way to reach them again.
Likes do not pay rent. Spark turns curiosity into structured commitments — prices, emails, early-access requests.
Open Spark, type one product idea, hit publish. No design work. No setup. You get a clean canvas with your idea at the center, ready to share.

Drop the link in your group chats, your Twitter, your newsletter, your founder Slack. Anyone with the link can read your idea and react — no signup required to comment.
Visitors leave comments, react with "interesting", and — most importantly — submit a price they would pay. Each interaction is structured signal, not noise.

When you are ready to build, export the list of supporters who said "would pay" or "want early access" — with their emails. You start day one with a warm pipeline.

Spark opens in waves throughout 2026. Drop your name, your email, and the idea you want to validate first.