Which ones do you recommend and why?
If it's possible those which aren't too expensive..
Appreciate the help!
You don't really need too many tools or apps to manage your portfolio. The exchange your trading on probably has enough tools to help you track your trades and balances. Instead of focusing on all these peripheral tools, people should focus more on learning how to analyse and trade better.
In any case, I'd suggest the Delta app. It has a clean and sexy user interface.