If you want to use the main InvoicePlane application in your native language you can download the languagepack from our translation system. The translations can be downloaded from the button underneath. See the instructions on how to install the translations here hereInvoicePlane 1
If you downloaded the package, copy the folder with your language files (e.g. "German") to /application/language/ and enable the language in your system settings.
InvoicePlane is a free software nonetheless we have several expenses.
Please donate to support us.