If you are already a KOSI customer, you can download the app for free and log in with the credentials we provided you via email. In the KOSI app you can:- consult and check the status of your utilities.- check and modify your personal data.- view and download your invoices in PDF format.- always keep your consumption under control, checking the issue, amounts and deadlines of your invoices.- monitor your bill payment history and discover all the ways you can pay.- send the self-reading of the meter to have bills aligned with your actual consumption, thus guaranteeing you an always updated and reliable consumption profile.- contact our customer service for support on any questions or problems.- discover all the news from the KOSI world.All this and much more conveniently from your smartphone in just a few clicks, thanks to the simple and intuitive interface.