If you're willing to assume that all companies are going to keep your data safe, you're awfully naive. Whether or not they should is one thing... whether or not they will is another.
Besides, it's not like you couldn't have seen this coming. When you install the app to your Android phone, you get the following screen:
This application has access to the following:
* Network communication (create Bluetooth connections, full Internet access, view network state, view Wi-Fi state)
* Your personal information (add or modify calendar events and send email to guests, read contact data)
* Phone calls (read phone state and identity)
* System tools (Bluetooth administration, change network connectivity, change Wi-Fi state, modify global system settings, prevent phone from sleeping, automatically start at boot)
If that doesn't scream "We are going to take data about you and sell it", I don't know what does.