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Charging
I use Charge HQ to charge only from excess solar (and in Winter to schedule charge to a different maximum which is then added to by solar).
Stats++
TeslaFi (though there are a few that do the same) is great for recording trip data, and I use it to see which software versions are incoming, and I love the lifetime drive map. TeslaFi.com Tesla Model S 3 X Y Data Logger
Novelty
Remote app iOS I bought so I could do Siri Shortcuts for things like opening the frunk and trunk but TBH the damn thing never works reliably. https://apps.apple.com/au/app/remote-for-tesla/id991623777
I paid $14.99 for it and that was too much and it seems to be nearly $50 now!!
I also use various charging ones and planning ones already named above