The movie Jurassic Park was created using computers thar ran at 133 MHz. Total. That is less computing power than your phone. Orders of magnitude less. A $400 phone runs with dual 2.0 Ghz and six 1.7 Ghz (six!) processors. The silicon graphics computers that were used to create that movie cost $80,000 at the time, with even more than that in cost for software. A $130 raspberry pi has more raw processing power.
You can kludge away using your phone as a bodgy solution.
If you are interested in drawing, then draw on your phone and see what you can make. Bodge a solution.
Then you will know whether the 10x upgrade is worth it.