The Seenons app is a web app.
That means you don't have to download anything, a web app just works on your internet browser.
You can access the app from any location and from any device. Simply go to app.seenons.com to get started.
The only thing you need is a good internet connection. In this article you can read which internet browser you can use best.
To easily find the Seenons web app, you can also 'pin' it to your phone.