Ranked in these QuestionsQuestion Ranking
Pro Supports multiple Sega systems
Sega Mega Drive / Genesis and the Sega Master System are both supported seeing that ROMs for each play through the emulator.
Pro Free to download and use
It's completely free to download and use making for a good choice for those that do not want to purchase an emulator.
Con Requires a good phone with high specs
Heavy usage on this one makes for slowdown on cheap phones that have low specs. A higher end phone is definitely recommended to use this app smoothly.