Allow Unknown Apps:
Step1: Click on the APK link
Step2: Allow to Install unknown Apps > Click on Settings
Step3: Settings > Install Unknown Apps > Enable allow from this source
Step4: Go back and click on Install
Step5: Click on Install Anyway
Step6: App Installed
Note: For download the application please enable allow from this source option from the Install unknown apps page in your mobile device.
For more details information please refer to the demo video.