Lunar Papers: Product, team and how it was built

Solo founder · sold 17 months after launch

It solved one narrow and repeated task that every company has at the end of each quarter. The task is to find all invoices and give them to the accountant. It read the invoices where they already were, in the inbox and on supplier websites, instead of asking people to forward them. It also let customers write their own checking rules in plain language. Stripe data shows monthly revenue rising from US$12,631 in November 2025 to US$18,970 in January 2026.

Team of 2 to 10 · 33 months after launch, revenue falling

The product goes where the customers already are. A shop owner does not install a new app or learn accounting software. Instead, the owner writes into a chat. The founder wrote of having worked as a data scientist at a microloan company and of running a café. So the founder knew both the bookkeeping problem and the reason banks ask for records.

Solo founder · 19 months after launch, revenue growing

The founder, a digital nomad, had collected more than 1,000 receipts from many countries to track his own spending. He built the app for that use. It reads every line item instead of only the total, which matters for travellers with receipts in foreign scripts and currencies. Small, steady releases widened the market: 25 versions between 21 January and late October 2026. A translation of the app into 52 languages did the same, without a team.

Solo founder · 12 months after launch, revenue growing

It serves one narrow job, turning a statement PDF into clean rows, and it grew through pages written for single banks. The founder wrote in March 2026 that almost all clicks come through those bank pages. A free tier and a small credit pack let people try it before they subscribe.

Solo founder · 23 months after launch, revenue falling

It does one narrow job and returns the same fields for every document. A developer or an automation builder can call it without writing a parser. It sells credits by the page, and a credit pack needs no subscription. Revenue is small, and the verified record shows it falling from its January 2026 peak.

Team of 2 to 10 · 24 months after launch

It picked work that large regulated companies had failed to automate for years and that tolerates almost no errors. Instead of letting a model decide each step, it turns the expert's procedure into fixed program steps. This makes the result predictable and cheap to run. A few large customers, sold directly, can pay for a very small team.

Solo founder · 18 months after launch, revenue growing

It serves one narrow group of buyers, people who publish low-content paperbacks on Amazon KDP. It does every step they otherwise do with four to seven separate tools. Revenue stayed at a few hundred US dollars a month for a year. It grew after the founder replaced the free tier with a card-gated trial long enough to finish a whole book.

Solo founder · 1 months after launch

Most AI visibility tools show a share-of-answers score. The founder ran GEO work for B2B software companies through an agency. He wrote that the content team then asks "what do we write on Monday to get cited? No tool answers that." Cited.today sells the answer to that question and keeps the score only as the check.

Team of 2 to 10 · 25 months after launch, revenue falling

Said US$90K a monthRecords US$61.9K in JuneDid not hold

A developer in Bangalore formed a company with an American YouTuber who already had an audience of people who want faceless channels. So customers paid from the first day. Affiliates receive 33% of every payment and brought about a tenth of all revenue, and Meta ads brought more. Nobody could use the product without paying, so no free user consumed paid AI models. Verified revenue reached about US$85,000 a month for six months, and then fell by half.

Team of 2 to 10 · 3 months after launch

It went live in mid-October 2022, a few weeks after Dreambooth made it possible to teach an image model one person's face. The founder said in January 2023 that the first version was a static page with a Stripe button. He said the first portraits sold within 24 hours. A Facebook post, then Instagram and TikTok videos of dogs, brought the customers. The founder said the hype for AI avatars was already fading in January 2023, so the couple moved to pets, where the owners keep buying.

Started small, grew after funding · sold 11 months after launch

Its founders wrote some of the methods that the industry already used to run models cheaply, such as AWQ for 4-bit weights. They turned that research into a paid serving API. They proved the speed on a public benchmark and partnered with a cloud company that needed exactly that speed. Eleven months after its first public post, the partner agreed to buy it.

Solo founder · 33 months after launch, revenue falling

The app costs almost nothing to run: the owner reports a profit margin of 99%. The App Store page shows no new version since July 2025. A small, steady flow of downloads, about 2,500 in 28 days in October 2026, keeps about 150 paid subscriptions alive. The owner is an experienced app marketer who already sells more than a dozen other apps from the same developer account.

Solo founder · 4 months after launch, revenue falling

The founder turned the go-to-market frameworks she uses as an advisor into a product with one job and one price. It is a small, early business. Stripe data shows US$500 of revenue in its first four months and two active subscriptions in November 2026. The founder has listed it for sale.

Team of 2 to 10 · 11 months after launch, revenue flat

The site ties a cruise chat product to a creator with a social audience. It says the tool is led by her experience of living, working and travelling at sea. The first verified payment came in January 2026, the month after the start date on TrustMRR.