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.
Donate
Passepartout is independent work. If you like it, consider donating on Patreon.
Beta testing
"Development" patrons, additionally, get early beta versions of the app. The iOS app is distributed via TestFlight.