Founders who package a specific AI workflow into a paid app, browser extension, or web tool. The documented cases sell subscriptions, one-time licences, or paid reports, and most were launched by very small teams.
Sal Aiello and Monica Powers built DimeADozen, a site that turns a business idea into an AI-generated validation report. They built it in four days, charged $39 per report, made more than $66,000 in about seven months, and then sold the business for $150,000.
Cal AI lets users photograph a meal and get an AI estimate of its calories. Launched in May 2024, it is priced at $2.49 a month or $29.99 a year. CNBC reported about $1.4 million a month in gross profit and about $274,000 a month in net operating income, with a team of 30.
SiteGPT lets businesses create AI chatbots trained on their own website content. Founder Bhanu Teja Pachipulusu says it reached $10,000 in monthly recurring revenue within a month of launch.
Tony Dinh built TypingMind, an alternative chat interface for AI models, over a weekend for his own use after OpenAI released the ChatGPT API. Within three months it had more than 4,000 paying users and was #1 Product of the Day on Product Hunt. He raised the price from $9 to $79 as he shipped updates.
Buildpad started as a way to give AI memory across the product-building process. The basic version took about 30 days. The founders report reaching $1,000 MRR 54 days after launch, $2,000 MRR after 98 days, and $2,700 MRR with 5,000 users after about six months.
Daniel Nguyen built BoltAI, a native macOS client for AI models. He told Indie Hackers it makes about $10,000 a month in one-time sales plus $5,000 in monthly recurring revenue. Licences were priced at $37, $57, and $79.
Mattia Pomelli and two friends had already built four design tools before launching Sleek, which lets founders "vibe design" mobile apps by chatting with AI. It was built in three weeks and, according to Pomelli, reached $10,000 MRR within about a month without any marketing spend.
Photo AI generates realistic AI photos of users from their uploaded selfies. Pieter Levels runs it largely alone and reported $105,000 a month in revenue and $80,000 a month in profit, noting the app is a 40,870-line index.php file.
HeadshotPro, founded by Danny Postma, turns ordinary selfies into professional-looking headshots. The company states it has made more than $10 million in revenue since launch, generated 17 million headshots, and completed over 200,000 photo shoots.
Yasser Elsaid built Chatbase, which lets businesses create AI support agents trained on their own data. He says the first Stripe payment arrived 30 minutes after he added a pricing page, and that the company reached $9 million ARR with a team of about 30 and no outside investors.
Saeed Ezzati, a software engineer, learned to build browser extensions and launched his first one within two or three days. Superpower ChatGPT adds features such as folders and search to ChatGPT. He told Starter Story it was at about $20,000 to $30,000 MRR and that he is the only person working on it.
Rasty Turek built Vaultaire, an encrypted photo and file vault for iPhone, in about three weeks, mostly by prompting AI coding agents. He reports 17,100 downloads, 1,287 purchases, and a 7.53% conversion rate, with $26,384 gross in July and $41,425 in August.
Official imageOpenAI's general-purpose AI assistant. In our documented cases it is used to draft reports, brainstorm product slogans, write first drafts of client posts, and generate code for digital products.
Free plan: Yes. Free plan with limits on uploads, image creation, and deep research.
Pricing: Free plan, plus paid Go, Plus, and Pro plans for individuals and Business and Enterprise plans for teams. Exact prices were not shown in the version of the page we could read; check the official page for your region.
Checked October 17, 2026
Official imageAnthropic's AI assistant. Documented cases use it to write long video scripts, draft newsletter summaries, and run client offers on a single monthly subscription.
Free plan: Yes. Free plan for chat on web, desktop, and mobile.
Pricing: Free plan. Pro is $20/month billed monthly or $17/month billed annually. Max starts at $100/month. Team seats start at $20/seat/month billed annually.
Checked October 17, 2026
Each issue covers a sourced case study, the tools used, and what the evidence does and does not show.