Sep 24, 2015 - Guru Technolabs announces the release of Invoice Maker 1.0 for iOS devices, an app for creating invoices. Keep invoice data in your pocket! The ultimate goal of the app is to make invoicing more easily with smartphones, by keeping invoice data in your pocket. Users can see the full list of invoices and see the status paid/pending on same screen. When customers pay the whole amount, the status will automatically change from pending to paid. The invoices can always be accessed.