Build internal tools with just backend code
Interval generates full web apps just from backend Node.js or Python code. If you love writing code but hate building UIs, you'll love building with Interval.
Just write your business logic
In your codebase:
100% code-backed tools committed to your app's codebase
Import internal functions & modules
Use language-native features like async/await, conditionals, and type safety (because it's just code)
In your browser:
Interval renders UIs while your script awaits input
Runs in your browser, shareable with your whole team
Full component library with inputs, pickers, tables, & more
Made for TypeScript & Python
Interval's Node & Python SDKs integrate with your backend and provide simple code-first primitives for things like forms, tables, and navigation.
A single line of Interval code packs a punch
Interval's component library compresses the tedious work of building and wiring up UIs for your tools into simple async method calls placed within your business logic.
Custom frontend code
Robert'); DROP TABLE Users; --
Custom validation logic
What can you build with Interval?
AI database query tool
"I normally hate internal tool builders. They're often clunky, hard to audit, and removed from your code base. But Interval solves all of those issues and so many more. I love Interval and suggest it to every startup that will listen to me!”
Send Slack or email notifications from within Interval apps with one line of code.
Teams & permissions
Invite team members and grant granular access to your internal tools.
Cron & scheduling
Schedule actions to run automatically and optionally prompt for input if needed.
Links & navigation
Link between actions, perform redirects, and construct hierarchical navigation.
Create multiple environments for your apps and easily switch between them.
Interval automatically detects when data is loading and renders loading states to the user.
Security & privacy
Interval runs on your own infra, so only the data you send us reaches our server.
Add an extra layer of security to sensitive actions by prompting for MFA verification inline in your code.
Backed by the best
Build internal tools fast, with code.
Interval is a thoughtful, intuitive approach to quickly building powerful UIs that integrate seamlessly with your backend—no API endpoints, drag-and-drop, or frontend code required.