the reactor
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◆ Free to start

The Community for Startups.

Guidance and support for first-time founders.

  • Self-paced — any order, know what's next
  • Documentation kit — plan, deck, profile
  • Surveys — real evidence, not guesswork
  • Community — mentors and peers
  • Private — until you're ready to share

No card. No setup. Your first idea takes about a minute.

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Spoken to customers○ Public

The Reactor

by Aman Bharti · EdTech / Innovation management
OverviewDetailsSurveys
Guidance and support for first-time founders, in whatever order it happens.
ProblemThe same questions answered over and over, in a different tool each time.
Ideal customerFirst-time founders, inside a community that backs them.
Revenue modelFree to start, then a personal plan or a licence.
5Assumptions
3Evidence
3Reactions
1Survey
Documentation kit8/13
31 of 34 intake fields filled
Details
OwnerAman Bharti
MaturitySpoken to customers
Access○ Public
Community

Peers, mentors and more!

  • Find mentors by expertise
  • Request a chat in one step
  • See who's already helping
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People⌕ Search ideas, people⌘K
Find help
Browse mentors by expertise, then reach out with a specific question. Your peers are here too.
Any roleAny expertiseA to Z
Mentors
K
Kwame Osei
Go-to-market and growth advisor
◇ Mentor◔ Scout
MarketingGTMB2B SalesMarketplaces
3 mentoring · 0 intros offered
R
Rachel Merton
Finance and viability, ex-VC
◇ Mentor◔ Scout◈ Investor
FinanceViabilityPricingFundraising
3 mentoring · 3 intros offered
Your peers
F
Farah Nasser
Founder, AirCool
✎ Founder
ClimateHardwareOps
D
Diego Alvarez
Founder, Fieldwork
✎ Founder◔ Scout
OpsLogisticsSupply chain
Projects

Published in your community.

  • Learn from other founders
  • Share updates and offer help
  • Connect with purpose
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Projects⌕ Search ideas, people⌘K
The community
What people are building, and how you can help move it forward.
All projectsNeeds attentionMineFollowing
◈
The ReactorAman Bharti · EdTech

Guidance and support for first-time founders, in whatever order it happens.

Current focusCommunities pay once founders adopt it.
3 signals3 interviews
⋔
FairSplitRavi Menon · Fintech

Split group expenses and settle up instantly.

Current focusUsers trust an app to move real money.
1 signal0 interviews
▤
FieldworkDiego Alvarez · Logistics

On-demand warehouse space, booked by the pallet, by the week.

Current focusOwners accept weekly bookings.
1 signal3 interviews
✻
AirCoolFarah Nasser · Climate tech

Pay-per-comfort air conditioning, billed by usage.

Current focusTenants trust usage-based billing.
2 signals3 interviews
Your projects

Quick capture or a guided intake.

  • Collect your ideas
  • Draft, iterate, then publish and share
  • Answer the questions others will ask
Start a new projectSave & exit
1The basics✓Solution & vision3Market4Customer5Product6Business model7Team & needs
The basics · 1 of 23
What are you calling it?
A working name is fine, you can change it later.
The Reactor
← BackContinue
Do next

Work in any order. Never wonder what's next.

  • Ranked by what moves the idea most
  • Every item opens the right form
  • Never a score, just what's missing
Projects / The Reactor⌕ Search ideas, people⌘K
◈
Spoken to customers○ Public

The Reactor

by Aman Bharti · EdTech / Innovation management
OverviewDetailsSurveys
Do next — where to point your energy
→
Test: "A community will pay for it once its founders adopt it."Highest-risk assumption with no evidence yet. A customer conversation would move it.
→
Gather one more data point"Founders will log interview evidence if it takes under 30 seconds" isn't settled yet.
→
Ask the community for co-foundersYou've listed needs but no one has offered yet.
Documentation kit

Be ready for every question.

  • Business plan, pitch deck, personas and more
  • See what's still missing in each
  • Change an answer, every document is updated
The kit  ·  One-pager  ·  DeckPrint / Save as PDF
The documentation kit

One intake, 13 documents.

31/34 fields · 8 of 13 complete
Business plan14/14Not yet
Company profile6/7Not yet
Pitch deck9/10Open
Ideal customer persona6/6Not yet
Financial model inputs9/9Not yet
Shareholding and equity2/4Not yet
Surveys

Find out what people actually think.

  • Build a survey in minutes, send one link
  • Log interviews
  • Your contact list grows as you talk to people
Projects / The Reactor⌕ Search ideas, people⌘K
OverviewDetailsSurveys
How do you currently track idea validation?14 responses
Tests: founders want this more than a spreadsheet.
Where do your idea notes live today? · Single choice
Notes app6 · 43%
WhatsApp4 · 29%
Spreadsheet3 · 21%
Nowhere1 · 7%
How many customer interviews have you logged anywhere? · Rating
Average across 14 replies1.8
Open respondent view ↗Copy share link
Sharing

Private, invited, community or public.

  • Private means private, even from hosts
  • Choose exactly which sections show
  • Publish a page that captures real interest
Share & review — "The Reactor"
General access
○ Public — anyone with the link
Ask for review
They get a request in their inbox.
RRachel MertonMentor
KKwame OseiMentor
GGeorge IvesFacilitator
Send review request
What to show on the public page
Solution & vision
Market & edge

No card. No setup. Your first idea takes about a minute.

Home

Requests, offers and announcements in one place.

  • Get discovered by mentors
  • Introductions from peers
  • Announcements from your community
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Hi Aman
Here's what's moving on your projects, and across the community.
◈
Rupert Hale posted an announcement

Demo day slots are open. Book one before Friday.

Needs your response
RRachel Merton asked you to review The ReactorMentor · this morningAcceptLater
KKwame Osei offered an introductionTo a payments lead he used to work withAccept
Happening around you
Kwame Osei left mentor feedback · 2h
Diego Alvarez shared Fieldwork · 5h
14 people answered your survey · yesterday
AI prompts

Copy the prompt, paste the reply.

  • No new subscription, no data sent anywhere
  • Review every suggestion field by field
  • Nothing is applied without you
Review what came back
Nothing is applied until you say so.
Problem
Now: A founder answers the same questions over and over.
Suggested: The same facts, rewritten into five documents that drift apart.
Ideal customer
Now: Founders writing things down for the first time.
Suggested: First-time founders inside a community that backs them.
Revenue model
Now: Freemium, then a licence.
Suggested: Free to start, a personal plan, a licence for communities.
Apply selected
Resources

Guides, templates, playbooks and tools.

  • Curated by your community
  • Filter by type or topic
  • Updated regularly
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Learn what you need
Guides, templates, playbooks and tools, curated by whoever runs your community.
EverythingGuidesTemplatesPlaybooksToolsPodcasts
Guide
Running an interview that is not a pitchTalking to customers
Template
A financial model on one pageGetting technical
Playbook
Finding your first ten customersGetting off the ground
Tool
Survey questions that do not leadTalking to customers
Podcast
Founder stories before product market fitWorking with people
Explore

Search everything.

  • Unified search
  • Discover resources
  • Find the right project or person
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Search⌕ Search ideas, people⌘K
Search everything
Press ⌘K anywhere to jump to a project, a person or an action in one step.
⌕ react
Projects
◈The ReactorAman Bharti↵
People
AAman BhartiFounder · Scout · Mentor↵
Do something
Log a conversation on The Reactor↵
Open The Reactor document kit↵
Who's around you

You're not doing this alone.

  • Founders and peers — build, publish, share and back each other
  • Mentors — advise on the record, not a rehearsed pitch
  • Investors and service providers — early, and already in the app
Profile⌕ Search ideas, people⌘K
A
FounderScoutMentor

Aman Bharti

Building The Reactor: one intake, a whole startup document kit
in/bsabharti ↗
About
BioEMBA 2027 at LBS, founder at Saadhana Studios. Product and full-stack builder who would rather run one real customer interview than write ten slides.
SkillsProductFull-stackStrategy
Community contribution
Interviews3
Intros offered0
Reactions1
Mentoring
FairSplitRavi M.
For facilitators

Run the whole programme from one page.

  • Every project at a glance, and what's stalled
  • Assign mentors, nudge founders, flag what needs attention
  • Announce to everyone, and curate their resources
CohortsCompaniesUniversitiesNetworks
Community admin⌕ Search ideas, people⌘K
Community admin
Set what people see, announce, curate resources.
8Projects
5With evidence
12Interviews logged
2Open flags
Visibility policy
Founders can view mentorsOn
Mentors can view all foundersOn
Founders can view their peersOn
Roster
Founders8
Mentors4
Facilitators2
All of it, in one place

Everything you get.

The whole list. Everything here works today, in your browser, with nothing to install.

Capture and build

  • Quick capture, or a guided intake
  • 34 fields across 8 sections
  • Click any field to edit it
  • Version history on everything
  • "Do next" tells you what is missing

Documents

  • A kit of 13 documents
  • Completion tracked per document
  • One-pager and pitch deck
  • Print-ready PDF
  • Copy the whole thing as Markdown

Research

  • Survey builder, 7 question types
  • A shareable link and live results
  • Log interviews against contacts
  • A contacts list that fills itself
  • Private notes only you see

Publishing

  • Private, invited, community, public
  • A public page with a demand test
  • Pick which sections show
  • Share and ask for review at once
  • Archive or duplicate any project

People

  • Hold as many roles as you like
  • An inbox for requests and offers
  • A directory filtered by expertise
  • Follow any project
  • Profiles with LinkedIn import

AI, your way

  • Works with any model you already pay for
  • Review every suggestion field by field
  • Nothing is ever applied automatically
  • Assists for surveys and interviews
  • No AI baked in, no data sent anywhere
Pricing

Start free. Upgrade for the price of a coffee.

If a community you belong to has a licence, you already have everything.

Free
$0forever

Get one idea out of your head and in front of people.

  • One project
  • Quick capture and guided intake
  • Publish to your community
  • The one-page brief
  • Feedback, intros and offers of help
  • The full document kit
  • Surveys and contacts
Most popular
Premium
$4.99/ month

or $39 a year, saving 35%

Everything, for as many ideas as you have.

  • Unlimited projects
  • All 13 documents
  • Surveys with live results
  • Contacts and version history
  • Every AI assist, with your own model
  • A public page with a demand test
  • Keep everything when a programme ends
Communities
Contact usannual licence

A licence for a cohort, company, university or network.

  • Premium for every member
  • Every project at a glance
  • Visibility policy and announcements
  • A resource library you curate
  • Assign mentors, flag, nudge
  • Priced on members and cohorts
  • Members keep their work afterwards
What hosts get

This is a working prototype. Nothing is charged and no payment details are collected anywhere. The prices above are the intended model, not a live checkout.

Questions

The things people ask first.

Is this finished?

No, and we would rather say so. It is a working prototype in active development, built alongside a real cohort instead of in a vacuum. Everything on this page works in your browser today.

Next up: the remaining twelve document generators, then real accounts so your work syncs across devices.

How is this different from a business plan tool?

LivePlan and the rest write you one document, on your own. The Reactor builds the whole set from a single intake, keeps them consistent with each other, and puts your work in front of people who can actually help.

Why not just use a doc and ChatGPT?

You can, and most founders do. The problem is nothing compounds: you rewrite the same facts in five places, they drift apart, and none of it is shareable as one coherent thing.

Here you answer once, everything stays in step, and you send one link at whatever fidelity you choose.

Do I need to be in a programme?

No. It works perfectly well on your own, and you can publish to invited people or to a public page without belonging to anything. If your accelerator, university or company does have a licence, you get Premium free while it runs.

Who owns what I write?

You do. If you joined through a programme and it ends, your projects and documents stay yours: you carry them onto a free or personal plan rather than losing them.

How is my idea kept private?

Private is the default and it means private: only you, plus anyone you explicitly invite. Not even a programme host can look inside a private project. You choose when to widen it, and you can narrow it again.

Your idea deserves better than a folder.

Answer a few questions and watch it start becoming a company. Show it to whoever you like, whenever you are ready.

See pricing

No card. No setup. About a minute to your first document.

the reactor
The appYour projectsThe kitFull listFacilitatorsPricingFAQPresentationPrototype entry
A working prototype for LBS ESS 2026. Identity is simulated locally for the demo. No real accounts, passwords, or payment are collected.