Project guide

AI writing tool site

3 of the 4 self-reported cases grew with AppSumo; income runs from 4,000 to 215,000 dollars a month, and the two largest serve one job, CVs or SEO articles

Compiled from the 6 cases in our AI writing tool project: 4 grade B (founders' own accounts on Starter Story and Indie Hackers) and 2 grade C leads (CoverAI and Enhance.AI were both sold, but no citable source gives their revenue or price). Mind the date: Nichesss's figure is from 2022.

Compiled 2026-10-23

Key facts

4Cases graded A or B

2Grade C leads

Income ranges use cases graded A or B (grade B is the founder's own account, with no platform data to check it), in USD; grade C leads are listed but not counted

See the steps

How the cases did it, step by step

Each step names the cases it comes from. Public sources give no reliable time data, so there are no weeks or hours.

Step 1 Pick one specific writing jobCVs (Rezi, ResumeUp.AI, CoverAI), SEO articles (Cuppa), blog posts and ad copy (Nichesss): the more specific the job, the easier it is to get paid.Cases: Rezi · ResumeUp.AI · Cuppa · Nichesss
Step 2 Launch as soon as a new model opens upNichesss got GPT-3 API access in November 2020 and launched within a month; Rezi added GPT-3 in December 2020; Enhance.AI was built in a month.Cases: Nichesss · Rezi · Enhance.AI
Step 3 Win the first users on AppSumo or Product HuntNichesss made 100,000 dollars after the platform's cut in its first AppSumo month; ResumeUp.AI hit #1 on Product Hunt and an AppSumo deal brought hundreds of customers; Rezi grew through Reddit, AppSumo, search and one giveaway.Cases: Nichesss · ResumeUp.AI · Rezi
Step 4 Set the price tiers carefullyRezi uses a free builder to draw people in and charges 29 dollars a month or 149 for life, and dropping a 3-dollar tier raised lifetime value; CoverAI had 5- and 7-dollar subscriptions and a 15-dollar lifetime plan; Nichesss was still selling a 59-dollar lifetime deal in 2026.Cases: Rezi · CoverAI · Nichesss
Step 5 Or buy an existing product and run itCuppa is an existing writing tool a friend bought; Ryan Darani closed his SEO consultancy to join, reached 41,000–45,000 dollars a month in under two years and added a done-for-you service. In the other direction, CoverAI and Enhance.AI were both sold soon after launch.Cases: Cuppa · CoverAI · Enhance.AI

At a glance

Ranges are the 25th–75th percentile of cases graded A or B, computed by script from the case data; both ends of a ranged figure are counted

Cases graded A or B: 4
Monthly income (annual figures divided by 12): $30,000 – $45,000

Skills involved

How many of the 4 cases graded A or B list each skill

AI-assisted coding3 of 4 cases

Nichesss was built within a month of getting GPT-3 API access; ResumeUp.AI built CV writing, an ATS checker, LinkedIn tuning and an application tracker in three to four months.

SEO3 of 4 cases

Rezi grew through search rankings, Reddit and AppSumo; Cuppa's operator previously ran an SEO consultancy at 65,000 dollars a month; ResumeUp.AI lists search as a channel too.

Pricing2 of 4 cases

Rezi draws people in with a free builder and charges 29 dollars a month or 149 dollars for life; dropping its 3-dollar tier raised customer lifetime value. CoverAI had 5- and 7-dollar plans and a 15-dollar lifetime plan.

Mobile app development0 of 4 cases

Enhance.AI's creator built the writing site with React and AI in a month and then sold it (per the video description).

Key points

How big the income is

All four are self-reported: Rezi at 215,000 dollars a month (August 2024, 11 staff, profitable by the founder's account); Cuppa at 41,000–45,000 dollars a month, varying by season; Nichesss at about 30,000 a month (January 2022); ResumeUp.AI at about 4,000. CoverAI and Enhance.AI were sold, but there is no citable revenue or price.

Cuppa's done-for-you service, at 13,500 dollars a month, is counted separately
Nichesss's figure is from 2022
Sale prices that appear only in third-party retellings are not recorded

Costs and acquisition

Nichesss spends 2,000 dollars a month on AI generation, a cost that rises with use; Rezi ran paid ads for a year at 15,000 dollars a month without a positive return and stopped; ResumeUp.AI's founder says their biggest mistake was assuming a good product would grow itself, barely marketing for months.

Model costs grow with usage
Paid ads may not pay back
A good product does not sell itself

Dependencies and risks

Nichesss depends heavily on AppSumo for distribution; demand for Cuppa moves with search engines' policies on AI content; CV tools are crowded, and ResumeUp.AI's rival Rezi is far larger; CoverAI's lifetime tier left the long-term API costs to its buyer.

Dependence on one channel
Search-engine policy drives demand for SEO content
Lifetime deals need the long-term model costs worked out

Cases graded A or B

See them all in the case library →

BSelf-reportedCuppa: Ryan Darani closed a 65,000-dollar-MRR SEO consultancy to join a friend's acquired AI writing tool, now at 41,000–45,000 dollars MRR in under two years$41,000–$45,000 MRR · monthly
BSelf-reportedNichesss: a self-taught programmer's GPT-3 writing tool run from Rio, 100,000 dollars net in its first AppSumo month, about $30,000 a month$30,000 revenue · monthly
BSelf-reportedResumeUp.AI: two Bangalore engineers' AI resume tool, launched in three months, hundreds of customers from an AppSumo deal, about $4,000 MRR$4,000 MRR · monthly
BSelf-reportedRezi: an AI resume builder run from Seoul, launched 2019, GPT-3 since late 2020, 215,000 dollars a month and profitable by the founder's account$215,000 MRR · monthly

Other cases in this project

Grade C leads: income not reliably confirmed; useful for how things were done, but not counted above.

Tools

Tools and platforms the cases mention. Every link goes to the official site, and we earn nothing from them.

Tool	Used for	Link
OpenAI API	Nichesss and Rezi generate content with GPT-3; CoverAI and Enhance.AI also used OpenAI models	Official site ↗
AppSumo	Where Nichesss and ResumeUp.AI sold lifetime deals; Rezi grew there too	Official site ↗
Product Hunt	Where ResumeUp.AI launched and hit #1	Official site ↗

Platform rules and compliance

AI-written articles must follow search engines' content policies: Google treats low-quality content mass-produced to manipulate rankings as spam, and demand for Cuppa moves with such policies.
CV tools handle job seekers' personal data: publish a privacy policy that says how data is stored and deleted.
Before selling lifetime deals on AppSumo, work out the long-term model costs and support load.
Claims such as 'passes ATS screening' need evidence, and no tool should promise a job.

Compare

Compare: AI micro-SaaS (small tool sites)

FAQ

How much can an AI writing tool make?

Our four self-reported cases range from 4,000 dollars a month (ResumeUp.AI) to 215,000 (Rezi).

Is AppSumo worth it?

It helps at the start: Nichesss made 100,000 dollars after the platform's cut in its first AppSumo month, and ResumeUp.AI won hundreds of customers there; but Nichesss's distribution came to depend heavily on AppSumo.

Should I run ads?

Rezi ran paid ads for a year at 15,000 dollars a month without a positive return and stopped; it grew mainly through search, Reddit, AppSumo and one giveaway.

Can I buy an existing product?

Cuppa is an existing writing tool a friend bought; the two reached 41,000–45,000 dollars a month in under two years (self-reported); the purchase price is undisclosed.

What is the biggest risk?

Depending on one channel, search-engine policy shifts on AI content, and the long-term model costs a lifetime deal leaves behind.

Want more examples like these?

See them all in the case library →