1. Head over to the Supabase website.
2. Sign up for an account or log in if you already have one.
3. Once you're in, click on "New Project" to start a new Supabase project.
4. Fill in the details for your project and hit "Create new project".

1. After setting up your project, go to the project dashboard.
2. Navigate to the "Settings" tab and then click on "API".
3. Copy the "API URL" and "anon public" API key. You'll need these for the Ionic app.

1. If you haven't already, install the Ionic CLI:
     ```bash
     npm install -g @ionic/cli
     ```
2. Create a new Ionic app:
     ```bash
     ionic start myApp blank --type=angular
     ```
3. Move into the new app directory:
     ```bash
     cd myApp
     ```

1. Install the Supabase JavaScript client:
     ```bash
     npm install @supabase/supabase-js
     ```

1. Create a new file in the src directory called supabase.service.ts.
2. Import the Supabase client and set it up with your Supabase URL and API key:
     ```typescript
     // src/supabase.service.ts

  import { createClient } from '@supabase/supabase-js';

  const supabaseUrl = 'https://your-supabase-url.supabase.co';
  const supabaseKey = 'your-supabase-key';
  export const supabase = createClient(supabaseUrl, supabaseKey);
  ```

1. Inject the supabase instance into your Ionic components or services:

  ```typescript
  // src/app/home/home.page.ts

  import { Component, OnInit } from '@angular/core';
  import { supabase } from '../../supabase.service';

  @Component({
    selector: 'app-home',
    templateUrl: 'home.page.html',
    styleUrls: ['home.page.scss'],
  })
  export class HomePage implements OnInit {

    constructor() {}

    ngOnInit() {
      this.getData();
    }

    async getData() {
      let { data, error } = await supabase
        .from('your-table-name')
        .select('*');

      if (error) {
        console.error(error);
      } else {
        console.log(data);
      }
    }
  }
  ```

1. Run the Ionic app on your local development server:
     ```bash
     ionic serve
     ```
2. The app should now be able to connect to your Supabase project and fetch data as configured.

1. Add mobile platforms (e.g., Android or iOS):
     ```bash
     ionic capacitor add android
     ionic capacitor add ios
     ```
2. Sync your project:
     ```bash
     ionic capacitor sync
     ```
3. Open the project in Android Studio or Xcode to build and run it on a mobile device:
     ```bash
     ionic capacitor open android
     ionic capacitor open ios
     ```

Make sure the Supabase client setup and API usage is correctly configured to work within the mobile environment.