Bill Calculator is a free Android application developed by Kamil Seweryn that lets you calculate the cost of your energy and gas bills. If you want to know how much you have to pay for the electricity or gas you have consumed, this app is an excellent tool. You can input the current and previous reading of your meter, and the app will calculate the cost for you. You can also configure the prices according to your individual tariff.

The app has several features that make it user-friendly. You can view your calculation history, print the bill calculation to a PDF file, and auto-backup and restore on re-installation. The app supports energy providers like PGE Polska Grupa Energetyczna, Tauron Polska Energia, and gas provider PGNiG Polskie Górnictwo Naftowe i Gazownictwo. However, the displayed calculations might not be accurate as the app does not have access to your location, and the calculations are based on the prices you configure yourself. The developer takes no responsibility for the application content and its use.