Warning : Error which you are seeing while tring to install apk file in your device is because your are not downloading APK file from Google Play Store. I will be uploading this APK in Google Play as soon as possible.

Apple Iphone users need to wait, as I am in learing process. Mean while you can use the Safari browser.

Step 1: Download the APK File

Download the APK file by tapping or clicking the "Download APK File" button above.
Wait for the download to finish.

Step 2: Install the APK

Tap the file from the download notification, or open it from your Downloads or File Manager.
Tap on the APK file.
If prompted, enable installations from unknown sources in your device settings.
Tap "Install" when prompted.
Wait for installation to complete.
Tap "Open" or "Done".

Optional: Disable "Install from Unknown Sources"

Go to Settings > Security > Install unknown apps.
Select your browser and toggle the option back to OFF.
After installation for your satisfaction you can do a Play Protect Scan from Google Play Store App.