...there is none!
You don't need to sign up to use Coinlytics. Just install the app and go. Users are completely anonymous to us - we track your device ID so that we can understand how the service is being used, but that device ID looks something like this: 46BAD993-7D5E-46AA-82DA-753C209FBCBA - we have no way of associating it with you, but it's unique enough to allow us to analyze how Coinlytics is being used.
You can see your Device ID on the About page (More -> About).