Dolibarr is an opensource ERP/CRM. If you have installed it with Dolifinn you will be able to take a look at your revenues in different graphic views. You will be able to check them monthly or quarterly, and you will be able to check the current year data and the previous year, so you can control from your mobile if you are increasing your revenues.
To connect to your Dolibarr you must set your connection url and set your username and password. Your connection url is the one you use to connect via web to your Dolibarr installation. The best way to know is check the index.php file (is the one that you see when you enter in Dolibarr) and take off from the last "/".
Also in your current Dolibarr installation you have to enable the REST API module that comes with the core installation.