Google App Maker Shutting Down. Google cites low usage as the reason for pulling down the service that is part of google's gsuite. If you no longer use an app, it will stop working according to the timeline in the next section.
App maker is one nice platform and google is already shutting it down in 2021. Due to low usage, google app maker will be turned down gradually over the course of 2020 and officially shut down on january 19, 2021. Preview apps can't be distributed in the g suite marketplace.
Google has announced that it is going to shut down its google app maker service.
Prior to the shutdown, you’ll need to review app maker usage in your domain and take any necessary action. The existing apps under app maker will continue to work for now. Starting today, january 27, 2020, app maker is no longer under active development. Having announced the end of support for chrome apps, the company has now announced that google app maker will be closing down in less than a year.