Almost really good – Acrobits Groundwire Review

The app works really well. I've used it for pure SIP calls and calls terminating in the PSTN. Call quality is good. I've tried other apps, and Acrobit's software is by far the best available if you want to actually -answer- calls while the app is in the background. That said? ZRTP encryption is turned off by default for inbound calls. It's a hell of a hunt to turn it on, too. This is inexcusable. Outbound ZRTP isn't available at all unless you shell out another $25. You know what? That just means I'll do it from another app--a free one, like Linphone. So the outbound price is just stupid greed--I'd pay a couple of bucks for the convenience of including it, but for $25? It means nobody gets my money. The turned-off ZRTP for inbound calls, though, and the buried setting? What, only geeks deserve private calls? It's pretty lame.
Review by me-me-now on Acrobits Groundwire.