Wein Vortex VI-3500 Ionic Air Purifier vs Ionbox 20m Ionizer

Both are filterless ionizers, not HEPA purifiers, so neither removes particles the way a true air purifier does. The Wein Vortex VI-3500 claims far higher ion output and a much larger coverage figure, plus app control, but it has only 18 ratings and no fan to move air. The Ionbox 20m has a quiet fan, a touch switch, USB power and a much larger review base, and owners consistently call it simple and quiet. Buy the Ionbox for a desk or nightstand; step up to the Wein only if you want app control and a bigger claimed room rating.

• Choose the Wein Vortex VI-3500 if you want app control, a fanless design with no motor noise, and the highest claimed ion output and coverage in this pair.
• Choose the Ionbox 20m if you want a small, quiet, USB-powered unit for a desk or bedroom and prefer a product with a long track record of owner reviews.