Find AI Business IdeasBuild an AI appointment setter that follows up and qualifies leads
In short: about $50–$200 to start and about 15 hours a week (our estimates), intermediate level. First step: Put up a simple landing page for one niche (for example solar or coaches), book demo calls, and take refundable deposits before you build the product.
Two founders validated an AI appointment setter with a fake demo and refundable deposits before writing code. Here is their path.
Best fit if: you know a high ticket sales niche and can ship a simple web product. Skill level: Intermediate.
Who did it
| Role | Two co-founders of Setter AI (Josef and Timo) |
|---|---|
| Background | One left freelancing as a software engineer to start indie hacking; they met in a coworking space in Bangkok |
What they did
| Validated first | They put up a landing page and a fake AI caller demo months before building the product. |
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| Took deposits | Buyers paid a refundable deposit before any real software existed. |
| Niches that pay | They sell to solar, coaches, financial services and other high ticket B2B buyers. |
| Grew on inbound | After launch they doubled down on SEO, comparison pages, free tools and YouTube. |
“The only way to validate is when buyers swipe their credit card.” From Timo, in his Starter Story interview
How it went
| Before code | They report making $500 before writing a single line of code. |
|---|---|
| Pricing | Subscriptions start around $50 a month; some pay over $500; their biggest customer pays up to $5,000 a month. |
| Customers | About 2,000 business signups and 38 paying customers focused on higher value accounts. |
| Revenue | They report $10K MRR (Starter Story). |
Self-reported by the founder, not verified by us, and not typical. Source*: Starter Story.
Tools they used
| Named in the source | Webflow for the landing page and CMS, a serverless stack for the product, and calendar booking for demos. The source does not name every AI model. |
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What it cost to start
| Reported | They stress validating with a fake demo and deposits before a big build. Exact total spend is not listed. |
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| Our estimate | $50 to $200 for a domain, hosting, AI usage and tools while testing. This is our estimate. |
| Time | They describe more than a year from idea to the reported revenue level. |
Try it yourself: step by stepOur suggested plan
These steps are our suggestion, not what the source did step by step.
| 1. Pick one niche | Choose one industry you understand where missed leads cost real money. |
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| 2. Build a fake demo | Make a short landing page and a sample call or chat that looks real. |
| 3. Rank for one keyword | Target one buyer search term with a warm domain if you have one. |
| 4. Book demos | Put a calendar link on the page and talk to people who book. |
| 5. Take a deposit | Offer a refundable deposit that unlocks early access when you launch. |
| 6. Build only after pay | Write the first real version after you have paid interest. |
Worth knowing
| High ticket sales | This path leans on sales calls and deposits, not a self serve free plan. |
|---|---|
| Seasonality | They note August was slow for B2B. |
| Competition | AI callers and setters are a busy category now. |
| Results vary | Results vary. Most people earn less, and some earn nothing. |
At a glance
| Startup cost | $50–$200 ($100 to $500 tier, our estimate) |
|---|---|
| Hours / week | About 15 (our estimate) |
| Complexity | Intermediate |
| Time to first dollar | 1 to 4 months (estimate by this site, not sourced) |
| Tools | LLM API, Webflow or Next.js landing page, calendar booking, Stripe |
| First step to first customer | Put up a simple landing page for one niche (for example solar or coaches), book demo calls, and take refundable deposits before you build the product. |
| Reported result | $10K MRR A self-reported story from Starter Story*. Our automatic check found this figure in the source text on 2026-10-14. We do not verify it, and it is not typical. |
Quick answers
How much does it cost to start: Build an AI appointment setter that follows up and qualifies leads?
About $50–$200 to start, by our estimate ($100 to $500 tier). Tools: LLM API, Webflow or Next.js landing page, calendar booking, Stripe.
How many hours a week does it take?
About 15 hours a week, by our estimate. Complexity: Intermediate.
What is the first step to a first customer?
Put up a simple landing page for one niche (for example solar or coaches), book demo calls, and take refundable deposits before you build the product.
How long until the first dollar?
1 to 4 months. This is an estimate by this site, not sourced, and many people earn less or nothing.
Results are self-reported by third parties and not verified by us. Most people earn less. Not financial, legal or business advice. Full disclaimer.
Source: Starter Story*, accessed 2026-10-14