In no particular order:
Feedly: It's a Newsreader App. I can jam through all the headlines from all my favorite sites and forums in record time, read what i want and skip the rest. You can save stories for later or bookmark to come back to, share etc. Best part, it syncs with the PC so you can open anywhere and it's all synced.
Car Care: Track vehicle maintenance and fuel. Records are exportable via email. When did I change my oil or that belt? its all recorded in app.
Waze: Navigation app with crowd sourced notifications of police, accidents, debris in road etc. LOVE IT. Customizable voice notification.
Spotify of course...
Scany: Network scanner with lots of networking tools, ping, traceroute, whois, etc etc, because who doesn't scan networks....
5-0 Radio Pro - Police, fire, emergency services Radio Scanner feeds
Call Protect: If you're on ATT, this is your defense against robocallers. Community sourced with reports, block callers, supported by AT&T and blocks some offenders at the network level as well. Its called HIYA on androids.
DJI Go 4 - Drone interface
Eufylife: Best app out there for my eufy products