Feature Unique First-Time Users
I am looking for recommendations for capturing analytics regarding a specific features first-time users. My ambition is to know over a period of time (say 6 months) how many unique first-time users are using a feature each month. (i.e., month one 10 users, month two 10 users, month three 30 users, .......) I don't want to count in month 2 a user that used the feature in month 1. These are truly unique users.
I hope that makes sense and I appreciate any suggestions or help.