The Android App is simply used to monitor and control the ESP32 firmware.

This App is written in Basic4Android. This language is very close to .Net language and offer a really powerful way to write Android (or IOS) application in no time.

 The full project is available on my github page into this .zip file

But before opening this file you should install the B4X environment on your computer. Don't be afraid this is easy to do and all you have to do is to follow precisely these instructions : B4A installation

Then unzip the project and you should see something like this :

Doule click on the .b4a file and the project will open into the IDE

Before compiling the code don't forget to add these library (download them and tick the box)

You will need to get familiar with basic usage of B4a. This help page will be precious!

Finally you will be able to compile the code and install the .apk on your phone.

And if you don't have time to compile the source code then here is the Android .apk file