One response there does mention how to transition in a few steps via unpublishing, etc, however users must deal with the old app as well as the new app manually. Less of an issue with Cloudron Admins.
If you were to now package HackMD, what would you do to name it?
Since the two apps are still data compatible, it would be a good time to migrate. Harder later.
@girish Cool! Until then I will try to get it working myself. I'm about to submit a support request regarding a custom app deployment of hackmdio/codimd. But when do you think it will be available on the App Store?