To connect your Spirohome device to an iOS device, you must first download the Spirohome Clinic app from the App Store, respectively. Once you install and open the application, you will be prompted to create a user account. When creating your account, you will be asked to enter information that will have a direct impact on the accuracy of your test results once you begin testing. Check that the batteries are installed in your device and then switch on your Spirohome Clinic device by holding the power button for one second. At this point, ensure that you have enabled Bluetooth on your smart device. The next step will require you to enter the serial number of the product (located on the back of your device) to pair the Spirohome Clinic device with your account. Your device will now be recognized by your iOS smart device automatically each time you use your spirometer.