Do smart air purifiers actually clean air better than non-smart models?

No—the filtration hardware (true HEPA plus activated carbon) does the cleaning, and that's the same in many smart and non-smart models. The 'smart' features add WiFi app control, real-time air-quality readouts, scheduling, and auto modes that adjust fan speed to sensor data. Across the reviewers we read, the practical benefit is convenience and visibility, so prioritize verified CADR and room coverage first, then treat connectivity as a bonus.