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Now Spark Nº 012 is being builtSpark Nº 011 · heirloom · built for N.E. · Jul 6, 2026Spark Nº 010 · marquee · built for R.P. · Jun 17, 202611 of 1,000 companies built and gifted, unaskedSpark Nº 009 · cover · built for B.S. · Jun 17, 2026Spark Nº 008 · passage · built for P.H. · Jun 16, 2026Seat open · RankFlow · GlobalSpark Nº 007 · indigo · built for G.N., Japan · Jun 15, 2026Spark Nº 006 · watchlight · built for The T. family · Jun 13, 2026CEO in place · N.U. · Lumi · PhilippinesSpark Nº 005 · haul · built for A.P. · by Jun 11, 2026$0 required from you to beginSpark Nº 004 · casa · built for L., Santo Domingo · by Jun 11, 2026Spark Nº 003 · two flags · built for K.N. · by Jun 11, 202683 seats open · 78 held by the Architect until their CEOs arriveSpark Nº 002 · two hands · built for M. and P. · by Jun 11, 2026CEO in place · J.R. · Africraft · AfricaSpark Nº 001 · departures · built for S. · by Jun 11, 2026
Every Lab companyLabAppWeb3, built new

Solves · Run my business

Rain Check

Shops offer customers automatic money back if it rains on the day, paid by a contract that reads public weather data.

Open to a CEOSee the doors
Try the demo Simulated until its CEO arrives
What it does

Shops offer customers automatic money back if it rains on the day, paid by a contract that reads public weather data.

What is new: Parametric insurance exists for farmers. Weather-backed promotions for small shops are new.

Who it is for

Anyone who wants to run my business or spend and get paid fairly.

Checked against the market

What it runs on: Free weather data (Open-Meteo) as the trigger.

Cost to run: Near zero; the shop funds the pool.

Lab grade: new to the market.

Who wants it

No hands raised yet. Be the first: it is how a Lab company starts being built.

Real counts from the Lab and from this page. Nothing is estimated.

Want this built?
Lab · open to a CEO

Raise your hand for Rain Check. Hands raised decide what the Lab builds next, and a person reads every one.

Nothing is charged. Your contact is used only to reply about Rain Check.

In the Lab

Rain Check was invented at the CEOism App Lab, where companies are demoed before anyone leads them. Every hand raised here is counted on this page.

Vote for it in the LabStart its channel with Wobbles

Become the CEO of Rain Check.

Three ways to hold it. You choose; nothing is signed or charged until you say so.

IFreeArrive as a co-ownerLead it free, as a co-owner, until you can fully own it.Arrive this way IIYou chooseName your priceSay what it is worth to you, and make it yours.Arrive this way IIIExtremely cheapOwn it outrightPay a price so low it barely counts, and own the whole company.Arrive this way
  1. You picked Rain Check.Drive its demo, or open the live app. Every Lab demo is simulated until its CEO arrives.
  2. Raise your hand.Say you would lead it. A person reads every hand raised and replies. No CV, no interview.
  3. Choose how you hold it.Free as a co-owner, name your price, or own it outright. You choose; nobody chooses for you.
  4. Lead it.ceoism builds it out with you and keeps it running. You carry it to your people. If you ever leave the seat, the company waits for its next CEO, and the idea stays yours.

Revenue co-ownership, not equity. How ownership works

More Lab companies for people who want to run my business.

See every Lab company
LabSolves · Spend and get paid fairlyPay on ResultsHire a tutor, marketer or coach and pay the second half from escrow only when real data shows the result: the exam passed, the sales up.Open to a CEOLabSolves · Earn from what I knowIntro BountyPut money on an introduction you need. Whoever connects you gets paid only after both of you confirm the meeting happened.Open to a CEOLabSolves · Understand myselfWhere Was ICome back to any project after weeks away and get a two-minute briefing on exactly where you left off.Open to a CEO

Four ways to become a founder.

Cheapest entry first
Way 1 · You are hereOwn a company, freeceoismA real company, built around you and handed over. All you need is your human.FreeWay 2Found your brand or channelWobblesA channel that grows your brand, drawn in code, not AI generated.Free to startWay 3Become the builderDeployr StudiosOpen a Studio and sell working apps under your own name.Free to openWay 4Own an appDeployrBuy a working app and own it, ready to launch.$100, paid once

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