All the required iOS specific parts (mostly related to file handling and certain device settings) are now implemented, and the app compiles and runs on the iPhone.
I am very impressed with how well the cross-platform library I am using (MAUI) works! In the older days there was always lots of tuning and minor adjustments that had to be done on each platform, but now almost everything looked and worked perfectly on the first run (well, as perfect as it works on Android, of course
).
I've spotted just two minor graphical issues so far, and one issue with some types of image loading.
This is very good news for me, and I hope it means I can launch an iOS test version pretty soon.