Review by Mike-at-the-barn says it all. Or, for a detailed review of products and app, see review of Heos 3 on Amazon.com by "NG".
In short, if you have a different Wi-Fi zones, do not buy this product. If you store your music and playlists in iTunes or on a computer, do not buy this product. If you want ease of use or consistent music, do not buy this product.
Donovan needs to hire some developers and fix this app. Ive wasted $1200 and countless hours trying to salvage this.
Ugga_gugga_bugga about HEOS, v1.349.50