I have 2 Zipp speakers and for the first couple of times, Link worked and Libratone seemed to function fine. However, link does not work anymore, app doesn’t recognize speakers and I have to add them again, only to lose them when my phone locks itself. The link issue was explained as due to the fact that I have WiFi access points instead of direct connection to router, which does not make sense. IF Libratone worked, it would be nice to have the battery percentage displayed (can’t believe they didn’t think of it...) but since it doesn’t, it really doesn’t matter.
Update Feb 3, 2020. Libratone actually worked quite well for a couple of months and I was starting to think the company is actually improving Libratone . Unfortunately, following the last app update, my speakers do not show up nor can I even add a new one. The home screen does not give option to add a new device. I tried uninstalling and reinstalling Libratone but that did not work either.