The Alexa app can be downloaded on your iPhone and used with or without an Amazon smart speaker.
You can set up Alexa on your Amazon Echo or Echo Dot device using the Alexa mobile app, or on Echo Show using the built-in screen.
Right now on Amazon, it’s $13 — 48% off the $25 original price. Setup is quick: plug it in, open the Alexa app on your phone, and you’re ready in minutes. No separate smart home hub is required.