To actually change settings on your Helix with this app, your Helix must have a wifi (802.11) chip inside it.
Connection with the Helix is done as follows:
1) Turn the Helix on
2) Go to the Home screen on your iPhone/iPad.
3) Find Settings -> Wi-Fi and select your Letus Helix.
4) Enter the wifi password found in the app help files (found by pressing the info button on the app's main menu).
5) Once it connects in iOS, you can go to the app and press the connect button.