Hi,
Have a look at our sample iOS app available from: ti.com/sensortag-wiki
Also you can try to connect to your device using the BLE Device Monitor, available from http://processors.wiki.ti.com/index.php/BLE_Device_Monitor_User_Guide
Try to connect to the keyfob image running on a keyfob using the app "TI BLE Multitool" available on the appstore.
Best regards,
Aslak