It's actually easier on Android with something like Towelroot app then you can make customizations with Wanam Kit (Xposed) app without touching any partitions and you don't even need to connect to a PC. Backup is easy and granular too as you can selectively choose partitions or down to specifics apps. If you blow up Android by accident you can still boot into TWRP/CWM recovery and fully recover without PC. So, the end to end process from rooting to cutomization to recovery from non-working OS state can be PC free unlike iOS.