I tried SimpleX but the VPN kill switch on my phone prevents syncing with my computer.
I use telegram primarily as a note taking app with sync features.
Occasionally I send files to friends, so having easy set up for tech illiterate would be great.
If I want to share something with a friend, I can invite them to note chats or bulk forward files. Messages are separate, I can forward individual message rather than all messages. It’s more continent than notes apps I’ve tried.