Jasi Patcher is described as 'JASI PATCHER is an automated patching tool for android intended to bypass restrictions in the apps & games, it includes custom patches, support patches, universal patches, offline emulation, spoof, hooks, tools and utilities'. There are four alternatives to Jasi Patcher for Android, Android Tablet, SaaS and Symbian S60. The best alternative is Lucky Patcher, which is free. Other great apps like Jasi Patcher are ROMPatcher plus (Free), Freedom for Android (Free) and TOhfk (Free).
Lucky Patcher is a free Android app that can mod many apps and Games, Block ads, remove unwanted system apps, backup apps before and after modifying, Move apps to SD card, remove license verification from paid apps and games etc.