Alexa stand along with FauxmoESP or Espalexa

Do I need an echo dot or something equivalent to it? I am using FauxmoESP or Espalexa. And trying to configure it with mobile Alexa app. But could not discover my esp8266.

This might sound very basic question. But I have never used Alexa and totally new to it.
I tried to find on internet but nothing that is well explained could be found.

To find out I tried to use EchoSim. It could not discover the devices.

then I went to market and bought EchoDot for testing. And yes all went smooth.

So Amazon smartly disabled the core device discover feature in Simulator or mobile app. you need atleast one echo hardware.

Thanks.

Hope this helps other readers.

I gave up and used sinric, app discovered it straight away.