We've gotten questions from users regarding whether it's ok to use their own AppMakr account to make apps for their clients. The answer is yes! We have lots of users who manage several clients and create apps for all of them through one account. 

The only place this could get tricky is if you're making iPhone apps for clients who have their own Apple developer accounts. In that case, it's best to have separate AppMakr accounts for each different developer account, as you can only upload one active developer account into AppMakr—if it's a personal developer account, Apple has tight specifications around letting only one person use it. However, an enterprise level developer account lets multiple users in a company use one account. More information can be found here. 

Happy AppMaking!