All Invoice Simple apps offer you different ways to obtain a PDF version of your invoices and estimates.
If you are using the mobile version: open the invoice you would like to save, then press on the three dots on the top bar, and choose Print, on Android devices, you would be able to save as PDF, on iOS devices, on the printing preview screen, Zoom in the invoice until you see the Save icon in the top right. By tapping this button you will see the options to save or share the PDF version of your invoice.
If you're using our web app: on any invoices or estimates, you'll see the Get Link and Print Invoice buttons located at the bottom of the menu options on the left side of your screen. If you click on Get Link, you'll be taken to your invoice link which has a PDF button located on the upper left side. If you click on Print Invoice, most web browsers will give you the option to select Save as PDF as the destination for the printing job.