Make Your SaaS Fully Customizable

Empower every user to create the tools they need - directly inside your product. Without code, just prompts.

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The Future of SaaS Customization Is Here

Custom.is embeds a vibe app creation layer inside your product,
enabling business users to build custom features and integrations just by typing prompts. No technical skills required.

  • No code exposure.
  • No internal rebuilds.
  • No engineering bottlenecks.

How It Works

  • 1. Quick Integration
    You just need to add 3 lines of JS in your pages.
    Our AI will learn the structure of your app: DOM, backend routes, API.
  • 2. Developer-Level Power for Every User
    Your users can now:
    • 👉 Customize UI: "Add a Kanban view to this dashboard".
    • 👉 Automate workflows: "Sync new leads to HubSpot".
    • 👉 Connect external tools: "Add button that shows info from LinkedIn".
    --all through plain English prompts.
  • 3. Secure by Design
    Custom.is never accesses your source code. It extends your UI and calls your API safely -- ensuring your product remains stable and compliant.


<script>
(async ()=> {
  let custom = await import('https://v1.custom.is/vibe.js');
  custom.init({
    company_token: '...'
  });
})()
</script>

Boost Adoption and Reduce Churn

Enhance your platform stickiness, create or expand your marketplace, and unlock new revenue by turning PS into software.

  • Maximize stickiness by embedding customer-specific solutions directly into your product.
  • Boost renewals and expansions by enabling extensibility at scale.
  • Generate new revenue streams through ecosystem-created apps and workflows.

What Our Customers Say

Richard, CTO
“

Custom.is let us give our top customers a safe way to build their own features. Our upsell can increase while our engineers stayed focused on core product.

”
David, VP Engineering
“

The integration of Custom.is was super quick, even with our pretty complex tech stack. Our power users are going to love it!

”
Eric, Startup Founder
“

The vibe coding trend is completely changing the game. Custom.is is becoming a key piece to stay ahead.

”

For Your Users

No technical skills required

Business users create features in natural language.

Faster time-to-value

Instant gratification, no IT bottlenecks, no wait for PS cycles or product releases.

Infinite flexibility

Build what they imagine, without waiting for your roadmap.

For Your Engineering Team

Zero engineering burden

No new custom code to maintain. Custom.is manages all customizations.

Fewer escalations

Reduce the flood of custom feature requests.

Stronger enterprise sales

Win and retain customers with deeper personalization.

Make Your SaaS Fully Customizable with AI

Try now.

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Frequently Asked Questions

Contact

Please feel free to contact us for any question: