MyFitnessPal is currently the only way to enter calories INTO Connect.
MFP is becoming increasingly ad-driven, and even with ads in the premium one.
Please consider allowing either open access to calories (say by the ability to enter a daily calorie input manually into Connect) or to allow third party apps entry to allow calories into the system.
MFP is getting to be an absolute trainwreck of an app and UA seem in no hurry to fix it.