Cirrus Insight is generally able to work with all types of Salesforce licenses. Licenses which have particular restrictions such as limited API calls or restricted configuration options may not be able to take advantage of all Cirrus Insight features. To determine if Cirrus Insight will work in your environment and provide the features you value, it is important that you download and test all required features in a 14 day trial. Cirrus Insight provides the free trial specifically so that these types of concerns can be definitively answered.