[reesexu]

Most of the friction I’ve hit with tiny household setups isn’t “what does the gauge say”—it’s who last updated shared state (trips, refuels, keys) and whether the next driver can rely on it. A rough UI everyone actually opens can beat a neat paper log maintained by one person.

The pencil‑and‑notepad takes make sense once the ritual is already mutual; the failure mode I see is partial adherence, where informal notes silently diverge. A purpose‑built helper can be the workflow, not only the record of it.

I’ve shipped a couple of relatives‑only gadgets; “it worked” usually meant routines lined up across people, not that the tech was flashy.