Download and install the Ideas app from the App Store.
Open the Ideas application and click on the icon at the top-right to open the main menu.
Select Todoist Sync Settings.
(At this point, you can click on the image to watch a tutorial video on how to set up synchronization with Todoist.)
Click Open Todoist Web Page and log into your Todoist account.
In Todoist, go to Settings > Integrations. Select the Developer tab and click Copy API token.
Switch back to the Ideas app.
Press the Paste and Verify Token button.
Please note that synchronization may take up to 1 minute to complete.