Hey devs, I'm looking for recommendations on feature usage tracking software/libraries.

The solution should, at least, allow me to:

• know how much a given feature is being used
• know which users are using a given feature
• let our business people navigate and exploit the information gathered
• be implemented in both a web and Android app

So far I'm aware of two potential candidates: Feature Audit and Sales Machine. Feature Audit is still in beta, so still have to be accepted into it.

How do you track feature usage on your apps?