Upgraded app to better fit new Android OS versions.
Upgraded com.google.android.gms:play-services to newest version.
This application allows to simply calculate amounts on invoice. It calculates net, gross, vat, tax and profit. You can enter any of mentioned values and other will be calculated based on your input. VAT and tax rates can be configured. It also can hold data of your company. You can always have them on hand.
