Build an App with AI · Real example

"Vibe design" a mobile app by chatting with AI.

Build an AI tool that designs mobile apps: Sleek, $10K MRR within a month

A gap in a fast-growing market (more people building mobile apps with AI) is a strong place to launch.

$10KMRR within a month
3weeks to build
$0marketing spend

Figures as told to Indie Hackers (self-reported by the founder) · source

From Indie Hackers · Jan 2026

Source image for Build an AI tool that designs mobile apps: Sleek, $10K MRR within a month
Image from indiehackers.com

The Short Version

How Mattia Pomelli (Sleek) made $10K MRR within a month, according to Indie Hackers (self-reported).

  • What: Mattia Pomelli has coded for about eight years and built four design tools with two friends.
  • Result: He told Indie Hackers Sleek reached $10K MRR within a month of launch without spending any money on marketing (Indie Hackers, Jan 2026).
Key Facts
WhoMattia Pomelli (Sleek)
ToolNot named in the source
Money$10K MRR within a month
TimeframeJan 2026
SourceIndie Hackers
Self-reportedYes

Source posted Jan 2026Figures as shared by the creatorHow we check sources

The workflow

GoalBuild an App with AI
$10KResultMRR within a month

Where & With What

What They Did

  1. 1The moveMattia Pomelli has coded for about eight years and built four design tools with two friends.
  2. 2Step 2Build where you have skills
  3. 3Step 3Find an underserved platform
  4. 4ResultHe told Indie Hackers Sleek reached $10K MRR within a month of launch without spending any money on marketing (Indie Hackers, Jan 2026).

Quick Answers

What tools do you need?

Just the platform account.

How much does it cost?

No paid tools needed: this case uses only the platform itself, which is free to join.

Is it allowed?

Follow the platform rules and disclose ads.

Watch out: Self-reported.

Try It Yourself

The prompt
(Our template, not the creator's prompt.) Describe my app idea as a mobile design brief for an AI design tool: 5 key screens, the main action on each, a color and type style, and one reference app for the feel.

Your first step

Paste the prompt into your AI assistant and swap the [brackets] for your own niche.

Full write-up & sources

More detail: Their latest, Sleek.design, lets app founders and developers without design skills design mobile apps by chatting with AI. They saw fewer AI design tools for mobile than for web and built Sleek in three weeks.

Source: Indie Hackers · Jan 2026. Summarised in our own words; figures as told to Indie Hackers (self-reported by the founder). Updated .

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