I'm using Termux with aliases. I'll write "c1" and it logs in the machine. I use git to sync and backup from my laptop.
I bought JuiceSSH too but I didn't use it that much. It's a shame they did what they did.
I too bought JuiceSSH. I can still download and run it on other phones I get in the future, right?
Termux is one of the best apps ever made for Android power users. It literally replaces so much stuff, if you don't care about GUI. No need for SSH app - it has ssh. No need for file sync app - there is rsync. No need for notetaking app, there is your $EDITOR you like. All 100% free. It's amazing.