GmobyGmoby

Gmoby download, found

A Gmoby search shows a studio's company pages, not an app. This switch holds the HappyMod installer instead of that.

AndroidHappyMod installer, latest APK
iPhone and iPadHappyMod installer, iOS build
Choose Android or iOS

Is this the Green Moby studio's app or not?

No. Gmoby here is an independent download guide. The button opens HappyMod, a free catalogue and installer for modded apps and games: you choose your platform and the latest build comes down.