https://www.techradar.com/news/you-can-now-give-alexa-voice-commands-on-your-iphone-and-ipad

The Alexa iOS app will finally support voice functionality, according to an announcement from Amazon this month. 

The software is being rolled out in the coming days to Apple devices, further expanding the Alexa ecosystem – which encompasses the Amazon Echo range of smart speakers, Fire TV streaming devices, and even a number of LG smart TVs.