Getting started

Theta works between the hosted platform and client library. To get started:

  • Sign up at (An invite is required in closed beta).
  • Create a new project and design your first interface.
  • Copy the page the name you want mirror.
  • Install Theta client library and use a UIBox('name of the page') to integrate the page within your app.

System requirements#

Theta is a web application that can be used from a browser. For optimal experience, please follow the system requirements:

  • Working on a desktop or laptop is recommended.
  • Use a screen of at least 12 inches.
  • It is recommended to use Google Chrome (if you experience problems, please try to see if problems persist on Chrome).
  • To do copy and paste within a project, allow the ClipBoard (a dialog box will appear at

Installing Theta client library#

flutter pub add theta


Initialize Theta by calling Theta.initialize with your anonymous key. Be sure to call this method at the root of your app.

import 'package:theta/theta.dart';

Future<void> main() async {
    await Theta.initialize(anonKey: 'thetaKey');

Wrap your app with ThetaProvider#

Wrap your app with ThetaProvider to enable any UIBox to receive the theme and project styles.

    theme: ThemeMode.light,
    child: MaterialApp(
        home: // ...

Render remote UI#

Everything you need to do is to add a UIBox widget to your app and pass the component name as a parameter.

/// Your app
return Scaffold(
    body: Center(
        child: UIBox('Component name'),

Loading placeholder and error handling#

You can display a placeholder widget during loading and an error widget.

    placeholder: CircularProgressIndicator(),
    errorWidget: (error) => Text(error),

Add custom code#

Want a dynamic UI with gesture support (onTap, doubleTap, etc.)? You can add custom code, called 'workflow' based on gesture triggers.

  1. Select a single UI element based on its id or name.
  2. Choose the trigger for which the action will start.
  3. Add your code.
    workflows: [
        Workflow('Element id', Trigger.onTap, (context) {
            /// Your method

Override block properties#

You can override each UI block with a Flutter widget by mixing no-code with Flutter.

    'Social card',
    overrides: [
        Override('Post title')
            ..setText('My beautiful cat')
            ..setColor(Colors.white, 0.5),

Child override#

If in the no-code component the element to which you want to overwrite the child already has one, it will be removed and replaced with the one entered by the user via code.

You can also use the UIBox within other UIBoxes. This provides a very high degree of customization.

    'Component name',
    overrides: [
        Override('Element id')
            ..setChild(UIBox('Other component')),

Children override#

You can also overwrite the children of an element.

    'Component name',
    overrides: [
        Override('Element name')
                Text('Child 1'), 
                Text('Child 2')