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For founders with more ideas than time

Stop flogging
dead ideas.

You do not need another brainstorm. You need someone to tell you, in five minutes, which idea actually survives contact with reality - and which ones you should have killed last year.

4.7from 312 early users9m 21smedian verdict38%ideas killed (thanked us)

YOUR IDEASWORTH ITKILLCrypto for petsAI journaling appNewsletter toolUber for lawnsAnother CRMNFT loyalty programMeeting AI scribeYet another todoStreamer tax docsGPT wrapper #4,127Calendar, with AIDiscord, but Web3Rent-day remindersFaster Notion cloneSlack for surgeonsDAO for book clubsProductivity OSClinic vendor portalOn-chain LinktreeB2B AI agentsVibe box, weeklyDiner reorder pingsAI shopping listPitch deck generatorVoice notes, now AIStartSieve

What we doscroll down

Why this, not that

You have already tried
the other three.

A journal, a GPT chat, and a long call with your cofounder all feel like progress. They are not. Here is why we exist.

[ 01 / 01 ]
BEATING
THE DEFAULTS

Journaling

Option 1

Restates the idea back to you.
No pushback, ever.
You leave more convinced - even if it is wrong.

GPT chat

Option 2

Helpful, flattering, infinite.
No structured probe. No verdict.
Ends where it started: with a cursor.

Your cofounder

Option 3

Wants the idea to work as much as you do.
Cannot say "kill it" without a fight.
Takes too long to get honest.

yes

StartSieve

The sieve

5 minutes. Structured interview, not a chat.
A verdict. Hot / warm / cold / dead. Named.
One kill criterion you agree with before you leave.
From $1. Your ideas stay yours - we don't train on them.

Still here?

Good. The hardest thing about a bad idea is not the work - it is the years you spent trying to make it work. Five minutes is cheap. Go.

Get a verdict

Stop floggingdead ideas.

You have already triedthe other three.