WesTech GAC contactors can be supplied in an open-top gravity system or, more commonly, in pressure vessels. They are typically designed with a conical underdrain for convenient GAC replacement.
By contrast, the HomePod is essentially an extension of the iPhone, like an accessory. When someone asks the HomePod to open a third-party app, the request wonât go directly to the cloud, as with the Echo, but to an iPhone. As a result, developers can't write apps for the HomePod. They must create tweaked versions of existing iPhone apps.
It also gives Apple the justification to price the HomePod as high as it is. As this chart from Statista shows, the HomePodâs $349 price tag puts it well above other smart speakers, but also above similar âdumbâ speakers from the likes of Sonos and Bose. If Apple can outmatch the latter on sound, while providing enough smarts to compete with the former, the HomePod might have the makings of a good buy.