Micro-SaaS & AI ProductsSource date: June 22, 2024Last reviewed October 19, 2026

Three founders took an AI content repurposing app to $120,000 MRR in about 10 months

An AppSumo launch two weeks after the MVP got Castmagic its first big wave of users.

Subject: Castmagic (Blaine, Ramon and Justin)Subscription AI content repurposing tool

Read original source1 source linked below
A laptop showing revenue charts on a desk beside an open notebook and coffee

Case Overview & Background

Blaine, Ramon and Justin built Castmagic, which uses AI to turn videos, audio and conversations into content such as show notes. They built it in two weeks and say it passed $120K MRR within about 10 months.

How AI Is Used

AI generates content with the context of a user's media files.

Step-by-Step Process

Step 01Spot the friction

Show notes could not be handed to a VA.

Step 02Build fast

Built the MVP in two weeks.

Step 03Launch on AppSumo

Used the launch as a springboard.

Customer Acquisition & Distribution

AppSumo launch, then creator and affiliate marketing.

Limitations, Risks & Failure Modes

What may not apply to you, and what could go wrong:

  • Self-reported
  • Faces competition from general AI tools
  • AppSumo takes a large cut

Key Takeaways

  • Embed AI in an existing workflow
  • Launch platforms give distribution
  • Speed matters

Sources

Interview SiteJune 22, 2024

Starter Story: They Make $1.4M/Year With AI

Note: Video interview transcript.

Open Source
Advertising slot availableAdvertise on AI Side Hustles

Category page banner: Reach readers researching one specific AI business model.

One clearly labelled banner on a category page such as Micro-SaaS or AI Agencies, shown next to the documented cases your product is relevant to.

Sponsored placements are always labelled and never change how cases are researched, labelled, or ranked.

Commercial disclosure: We currently have no affiliate or sponsorship relationship with any tool or person on this page. If that changes, affiliate links and sponsored content will be clearly labelled, and evidence labels will never be changed for commercial reasons.

Case ID: cs-three-founders-took-an-ai-content-repurposing-app-to-120-000-mrr-in-ab
Compare

Related Case Studies

DimeADozen.ai social preview: "Validate a business idea before you build it."
Image: DimeADozen.ai
October 16, 2023
1 source

A $185 AI report tool that made $66,000 and sold for $150,000

DimeADozen (Sal Aiello and Monica Powers)

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.

Reported figure
$66,000+ in about 7 months(revenue)
Evidence levelIndependently Documented
Tools:
Inspect Case
Cal AI social preview showing the app scanning a plate of pancakes and listing calories and macros.
Image: Cal AI
September 6, 2025
1 source

Cal AI: a teen-founded photo calorie tracker with about $1.4 million monthly gross profit

Cal AI (Zach Yadegari and Henry Langmack)

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.

Reported figure
About $1.4M/mo gross profit
Evidence levelIndependently Documented
Tools:none named in the source
Inspect Case