Save money and prevent bill shock with Tangoe rTEM. Our free app measures your data, voice, SMS and roaming usage in real-time and then compares it to your telecom plan. You will receive alarms on your mobile device as you use up your carrier plan. You can also monitor your cellular vs. Wi-Fi usage. By upgrading to our enterprise solution, you will benefit from our added security features and bill shock prevention for your corporate mobile devices.