Benefits Of Custom ROMs 1)Vanilla Android (Pixel Style) Some example: Lineage OS (Previously known as CyanogenMod), Paranoid Android etc. Custom ROMs are based on Official Android source codes which are customized or developed by developers or a community of developers.Custom ROMs come with loads of extra customizations which makes them unique and popular among the android lovers.Remember, Custom ROMs are not provided by Google or other mobile vendors but are developed and maintained by the community and its contributors.