1. Go to Control Panel\Programs\Programs and Features, select Recast Application Manager Integration Client and uninstall it.
3. Remove the applications downloaded by Application Manager from your Configuration Manager console.
4. Terminate the AM for MECM service by going to https://am.recastsoftware.com -> Administration - Services.
Make sure that you a plan for updating or removing the Application Manager supported apps. All the applications distributed with AM service have their built-in update system disabled. This means that if you have no other tool or method to update the apps they will not get updated.