It is a download manager which deals with applications that are the modded versions of the premium applications.
No. It is not available for iOS devices.
To download HappyMod on Android, you can visit www.happymod.vip
In this community, a few users upload mods for games and apps which other users try and verify whether they are work on different circumstances. Based on this contribution, HappyMod selects tested working mods for you.
HappyMod is an app that provide modded games and apps for free, while these apps and games are paid apps in official app stores. If you want to download these games and play it for free, then this app is definitely for you.