With the implementation of project hours, I think it should be reasonable to bring back the ability to monitor your existing apps downtime using platforms such as UptimeRobot.
I get this could artificially keep a project alive but there are already existing methods to do this. It this isn’t an option, could you at least bring back this feature for boosted apps.
UptimeRobot is very useful in monitoring the status of your application and would be a nice feature to be allowed access to.