Really like the Alexa skill thing, make me want dig into it. An Amazon echo for only 100 downloads seems easy to reach.
More “like” an echo whose sole purpose is to listen to you, at all times.
On a cell phone you can still use the phone without enabling the voice activation for Siri or google.
If you’re implying that the current iOS / Android devices are set to spy without granting additional permissions, I’d like to see some proof.