I had been using it for a few days, but have now removed it. I don't have a regular "morning routine" or whatever and so don't need to see different apps presented to me at various parts of the day. And most of the predefined categories didn't fit in with what I wanted. No provision to define your own custom ones. Normally I have groups of apps on the various pages of Google Home launcher or Touchwiz.
Another more serious issue though, is that it seemed to be constantly running the GPS, resulting in excessive battery drain. Could always see the GPS was active in notifications, and usually it was flashing because of being indoors most of the time, i.e. GPS doesn't normally work indoors. So had to turn it of, but when an app actually needed to use it, e.g. Maps, had to manually turn it back on again. Would Aviate always be needing to use GPS to determine precise location all the time? - surely WiFi or cellular location is enough for it?