I have plans to make it multiplatform but haven't started working on it yet
More stable Amber support for NIP-46 nostr:nprofile1qqs827g8dkd07zjvlhh60csytujgd3l9mz7x807xk3fewge7rwlukxgpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhszrnhwden5te0dehhxtnvdakz7qgswaehxw309ahx7um5wghx6mmd9usjfpck and a desktop signer to do the same.
Discussion
I am not sure if it's a good use of your time.
But if you want...