High Valyrian Long Y
The long Y for high valyrian is not available on the keyboard at present. Adding "yy" to words that have the "long y" sound does not always work. Please update the keyboard to include the long y for typing, please.
I always prefer to use the acute (´) I feel it's much easier for most keyboards. But any strategy that will let you know that vowels are long is good.
I’m not quite sure what you mean by this or how it is used. Can you give an example?
There are some apps on iPhone that will help you there, extended keyboards or IPA keyboards.
On mac there is the "ABC-Extended" keyboard, that you can add in settings. With this one you can tip the macron with "alt + a" and add it to all vowels including y. I dont know if there is something similar on windows.
Can you do this on an iPhone? My computer is a pc not Mac so that doesn’t really work for me. I mostly use Duolingo on my phone anyway.