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






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.
“Tell us about you, find your next idea.”
Steps 01 — 02“Map the market. Talk to humans. Get a verdict.”
Steps 03 — 06“Business case, MVP, legal, live website.”
Steps 07 — 10“30-day GTM, weekly insights, raise money, stay ahead.”
Steps 11 — 14Four 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.
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
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
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
Strong demand from ops managers, weak from founders. Drop the founder segment and re-test pricing before you build.
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 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.
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.
“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.”
“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.”
“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.”
Simple pricing. Honest tiers.
Start free. Upgrade when your co-founder’s got you to a real decision.
Find out whether entrepreneurship is for you.
- Your AI co-founder
- Market updates
- Dashboard & entrepreneur profile
- 1 personalized business idea / 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
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
* Domain included for 1 year, on the yearly plan only. Building with a team or cohort? Talk to us about accelerator plans →
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.