Backend is written in PHP 8.4. It's a standard MVC webapp using Laravel framework. It uses PHP GD library for generating some graphs.

Frontend is simple user interface, powered by Bootstrap with minimum of own CSS. There is a little vanilla JavaScript to provide some browser-side functionality. All icons are from Font Awesome. Some graphs are created with SVG technology. Kindly built with NPM.

AppHealer uses MariaDB for storing all data.

AppHealer is running inside docker container with everything it needs - database, libraries, scripts, build tools. There is only one requirement for host machine - any Linux distro with docker compose v2.