Community
Before anything, have a look at the Frequently Asked Questions.
Subscribe to /r/passepartout to report issues, suggestions or just engage conversations about the app.
Open source
Source code is available on GitHub under the GPLv3.
Public beta
Get early (restricted) versions of the app via TestFlight.
Donate
Passepartout is independent work. If you like it, consider sponsoring on GitHub or donating on PayPal.