Thanks for considering donating to LunaSea! Donations are what keep the project alive and completely free for everyone to use.
If you have downloaded LunaSea through the Play Store or App Store, you can directly donate using in-app purchases! Simply head to the Settings and tap the "Donations" tile. There are four options available (all scaled to USD): $0.99, $2.99, $4.99, and $9.99.
If you are using TestFlight builds on iOS devices, you will need to switch to the App Store version to donate. Any in-app purchases executed on a TestFlight build do not actually get processed.
Ko-Fi allows you to make a one-time donation in $1 increments using PayPal.
GitHub Sponsors allow you to setup a recurring donation in the amount of $1 to $5.