This sounds not that different from cron/at/launchd/systemd timers and in some ways but is cloud based (per their FAQ and synchronizes the jobs across a fleet of devices. In some ways this is therefore like a management snap, which we do not allow, but also like conda, which we did allow because the in that the user is telling the snap precisely what to do. It is understood that classic is required and I feel it is sufficiently within the same scope as conda that it should be allowed. @pedronis, please speak up if you disagree.
(I’m going to give @pedronis some time to respond before granting this)