Micro-SaaS & AI ProductsSource date: 2026Last reviewed October 17, 2026

Sleek hit $10,000 MRR within a month without paid marketing

Three friends built an AI mobile app design tool in three weeks.

Subject: Sleek (Mattia Pomelli and two co-founders)

Sleek social preview: "Make your app look designed", with phone screens designed in the tool.
Image: Sleek (official site). View source (opens in a new tab)

Case Overview & Background

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.

How AI Is Used

Users describe the app they want and the AI generates mobile app screen designs they can refine.

Step-by-Step Process

Step 01Pick an underserved niche

Mobile app design had fewer AI tools than web design.

Step 02Reuse prior experience

The team had built four design tools before.

Step 03Ship in three weeks

Launched quickly and grew through content.

Customer Acquisition & Distribution

Organic content, including a post that went viral. No paid ads.

Limitations, Risks & Failure Modes

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

  • Large design platforms are adding similar AI features
  • Retention after the first renewal cycle is not covered in the source
  • Self-reported figures

Key Takeaways

  • Experience from earlier products shortened the build to weeks
  • Niche focus (mobile, not web) gave a clear audience
  • Organic content can replace an ad budget early on

Sources

Indie Hackers2026

Indie Hackers: hitting $10k MRR in six weeks with an AI design tool

Note: Founder interview; full text requires a free account.

Open Source
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Case ID: cs-sleek
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