Keen.io provides the metrics infrastructure you need so you can focus on learning from your users and improving your product, not gathering data and scaling databases. Use our generic REST API to send us your usage data in a form that makes sense to you. We’ll speak the language of your application, not make you fit into ours. Our client libraries for iOS and Android are focused on ease of use, preserving battery life, and minimizing network traffic. Backend libraries in Ruby and Python for tracking server side events are also included.