AI Mobile App Builder in the Browser
Browser-based AI mobile app builder; first version in about two weeks with Cursor; grown through Reddit with zero audience.
In plain English
AppAlchemy lets people describe a phone app and build it in their web browser with AI. You can see the app take shape as you go. The founder found his first customers by posting on Reddit, with no audience of his own. Users pay a monthly subscription.
~$17K/mo (founder-reported on Starter Story, Jul 2025)
Operator: Diego Roshardt
A named, real operator ran this and shared results publicly. The figures are their own.
Not disclosed.
The tool stack
Payments
Anthropic API ↗LLM / agents
Next.js ↗Web app framework
Prices are the vendors' published list prices as researched in Oct 2026 and change often — always check the vendor's pricing page.
Step-by-step setup
- Ship an API or tool developers and agents call directly.
- Great docs, SDKs and MCP/CLI access.
- Usage-based or tiered pricing.
- Grow via developer communities and integrations.
What's automated vs. the human 15%
The machine does
- Core AI generation/analysis
- Billing and onboarding
You still do
- Product quality and support
- Distribution and marketing
- Compliance and edge cases
Overview
Browser-based AI mobile app builder; first version in about two weeks with Cursor; grown through Reddit with zero audience.
Operator: Diego Roshardt. Website: https://appalchemy.ai/
Estimated split: about 85% of the work automated, 15% human.
Realistic income
Diego Roshardt said on Starter Story that AppAlchemy makes around $17K per month (Jul 2025). This figure is operator-reported and not independently verified. This is one operator’s result, often after months or years of work, and doesn’t predict yours. Check the live source — numbers change.
Risks
- Platform dependency on upstream models/tools.
- Support burden from technical users.
- Startup cost and time to first dollar are not disclosed.
*Income figures are illustrative ranges based on public pricing and typical outcomes reported by practitioners, not guarantees. Most new online businesses earn little or nothing at first. Not financial, legal or tax advice.
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