Are smart humidifiers worth it over a basic model?

For most buyers, yes, primarily because of the built-in humidity sensor and auto mode. Across the reviewers we read, the most consistent complaint about dumb humidifiers is over-humidification, and auto modes that target a set RH percentage solve that. App and voice control are secondary nice-to-haves; specialist subreddit threads frequently note that the smart-home integration on these units (especially Levoit's) is the weakest part of the package.