To get the best possible testing experience, test using an up-to-date Sennheiser TWS headset; It is recommended to do it with noise canceling and transparency mode turned off. It is also very important to be in a quiet environment during the hearing test so that ambient sounds do not disturb the test. If you allow the app to access your microphone before the test, you can find out if the environment is quiet enough. Signing up for a Sennheiser account or logging in using an already existing account gives you access to previous test results. It lets you upload them to Apple Health as well as send you a reminder when you need to do another test. All this will help you monitor your hearing health on a regular basis.