Your AI co-founder, from idea to first customers.

Your AI co-founder takes you through a proven 14-step journey — Discover, Validate, Launch, Scale — so you always know the single next move. No blank pages. No guesswork.

  • One clear next move, every day
  • No technical skills needed
  • Free to start

Built for first-time and solo founders.

Grounded in peer-reviewed entrepreneurship research from leading institutions

StanfordHarvardINSEADIMDHECEPFL
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Startups built with AI
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Faster than manual research
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Countries using Fonda's AI tools
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Rating from entrepreneurs
How it works

One journey. Fourteen steps. Built to compound.

Your AI co-founder walks you through the same four phases every founder runs — and remembers every interview, decision, and pivot along the way. Every step ends with one action. Finish it, and the next unlocks.

01
About you
02
Ideation
03
Market
04
Personas
05
Interviews
06
Verdict
07
Business case
08
MVP plan
09
Legal & setup
10
Live site
11
GTM
12
Insights
13
Raise
14
Stay ahead
Discover · 2 steps

Tell us about you, find your next idea.

Steps 01 — 02
Validate · 4 steps

Map the market. Talk to humans. Get a verdict.

Steps 03 — 06
Launch · 4 steps

Business case, MVP, legal, live website.

Steps 07 — 10
Scale · 4 steps

30-day GTM, weekly insights, raise money, stay ahead.

Steps 11 — 14
What your co-founder does

Four ways your co-founder does the work with you.

Not a blank chatbot. A partner who scans the market, designs the tests, calls the verdict, and ships the boring stuff — one clear step at a time.

Your co-founder

A co-founder, not a chatbot

Most AI gives you a blank box and a blinking cursor. Your co-founder gives you a path — the same 14 steps every founder runs, across Discover, Validate, Launch and Scale — and does the work alongside you.

  • One clear next action every day
  • Progress auto-saves as you go
  • Pivots are non-destructive — archived ideas stay queryable
Discover
Validate
Launch
Scale
Your next move
STEP 05 · INTERVIEWS
Talk to 3 of the ops managers you flagged
Your co-founder drafted the outreach and the 6 questions. Send, log the answers, and the Verdict step unlocks.
Mapped the market
Built 3 customer personas
Score the verdict
Discover

The signals that matter to your idea, every morning

Your co-founder scans real market activity overnight — funding rounds, launches, shifts in your vertical — and surfaces the handful that touch your idea and ICP. Each one comes with a plain-English note on why it matters to you. Real, current signals. Refreshed daily, not a static blog.

  • Real funding, launch, and demand signals
  • Filtered to your vertical and ideal customer
  • A "why this matters to you" note on each
Today’s signalsRefreshed 6:00 AM
Funding
Seed round in your space
Why this matters: Same ICP as you — validates the budget exists.
Launch
Competitor shipped a free tier
Why this matters: Watch this — it reshapes your pricing wedge.
Demand
Search interest up 40% this quarter
Why this matters: Rising wave. Good time to validate fast.
Validate

We design the test, find the people, then give you a straight answer

Your co-founder builds falsifiable demand tests — not vanity surveys — helps you find and talk to real customers, then scores the result: go, refine, or pivot. No vague 'looks promising.' If the idea doesn't clear the bar, you get pivoted to a better one instead of sinking months into a dead end.

  • Falsifiable demand tests, designed for you
  • Help finding and talking to real customers
  • A scored go / refine / pivot call — with the reasoning
Validation verdict
72/ 100
Refine — narrow the ICP

Strong demand from ops managers, weak from founders. Drop the founder segment and re-test pricing before you build.

Launch & Scale

From validated idea to first paying users

Once the idea clears, your co-founder ships the parts founders dread: an auto-drafted business case, a live landing page and waitlist, a one-sentence MVP plan with a week-by-week roadmap, and a right-sized legal checklist — so you don't burn $4k on a lawyer too early. Plus go-to-market and fundraising tooling for what comes next.

  • Auto-drafted business case + live landing page & waitlist
  • One-sentence MVP plan, week-by-week roadmap
  • Right-sized legal checklist, GTM, and fundraising tools
Your launch kit
P
Prelude PR
Founder PR studio for pre-seed
Live site + waitlist · prelude.pr
The product

“Your co-founder remembers everything you’ve decided — and grounds the next conversation on it.”

Every step you complete, every interview you log, every pivot you make — Fonda folds it into a working memory. Not a chatbot. A co-founder with continuity.

Fonda · Co-founder
What did we decide about pricing yesterday?
Founder-led, $19/mo, no free tier. You said you'd rather lose tire-kickers than discount the ones who'll pay.
Right. Draft the page.
Drafting now — pulling the three objections from interviews 6, 9 and 12 to address inline. Back in 30 seconds.
Ask your co-founder…
Entrepreneur Stories

Founders who stopped guessing and started shipping

Join thousands of entrepreneurs using Fonda’s AI co-founder to turn their skills into thriving businesses.

The startup plan my AI co-founder generated was better than what I got from a $3,000 consultant. The financial projections alone saved me months of work — and it remembered every assumption when I came back to revise it. The best AI for entrepreneurs I've used.

SL
Sarah L.
E-commerce Founder · London, UK

I was stuck for two years trying to figure out what to build. Fonda matched me with HR consulting based on my experience — I launched in three weeks and hit $5K in month two.

JR
James R.
HR Consultant · Atlanta, GA

I was an engineer wanting to go solo. Fonda found the perfect intersection of my skills and market demand. Now doing $8K/month with my own dev studio.

AC
Alex C.
Dev Studio Owner · Berlin, DE

The validation surveys killed two ideas before I wasted a year on them — and pointed me at the one that actually had demand. That alone paid for itself.

PM
Priya M.
Solo Founder · Toronto, CA
1,000+
Startups built
4.9/5
Founder rating
50+
Countries
Pricing

Simple pricing. Honest tiers.

Start free. Upgrade when your co-founder’s got you to a real decision.

StartFree
$0no card

Find out whether entrepreneurship is for you.

  • Your AI co-founder
  • Market updates
  • Dashboard & entrepreneur profile
  • 1 personalized business idea / month
Get started free
Most popular
CoreIdea → Concept
$19/month

Turn your best idea into a clear, tested business concept.

  • Everything in Start
  • 10 personalized ideas / month
  • Market analysis
  • Risk & feasibility assessment
  • ICP + customer interview guide
  • Go/no-go score + pivot plan
  • Advanced support
Start with Core
ProBuild & Sell
$59/mo · $599/yr

Build the assets, plan and roadmap to start selling.

  • Everything in Core
  • 20 personalized ideas / month
  • Full business plan
  • Website — domain* & SEO included
  • Go-to-market strategy & setup checklists
  • Investor pitch deck + funding match
  • Weekly action plan, analytics & priority support
Go Pro

* Domain included for 1 year, on the yearly plan only. Building with a team or cohort? Talk to us about accelerator plans →

FAQ

Questions about building a startup with AI

Everything you need to know about Fonda, the AI co-founder for entrepreneurs.

Ready to meet
your co-founder?

Your co-founder is waiting at step one. Tell it about you, and you’ll have your next move in minutes.