To download the Android app, please click the download button as here is the only source for the app and is not available elsewhere even in the Play store yet.
Allow chrome to install app from unknown source
As this application is not downloaded from the Play store, it is important to allow installation from external sources
For Samsung devices:
Settings>>Biometrics and security>>Install unknown apps>> Toggle Allow from this source.
For non-Samsung devices:
Settings>>Security & privacy >>More settings>> Install apps from external sources>> select chrome and toggle Allow app installs.
For iOS users
The applications are not available in the app store; instead, you can Add the website page to Home Screen.
Open Safari, browse to https://www.amretina.com, press the share button, and then choose to Add to Home Screen.