As of my last knowledge update in September 2021, I don't have specific details about the JBL Tune 760NC Guide application. However, I can provide some general information.

JBL Tune 760NC is a model of over-ear wireless headphones, and it's possible that an accompanying app exists to enhance the user experience. Typically, such apps might offer features like:

1. **Customizable EQ Settings:** Users can adjust the equalizer settings to tailor the audio output according to their preferences.

2. **Firmware Updates:** The app may provide a platform for users to easily update the firmware of their headphones, ensuring they have the latest features and bug fixes.

3. **Battery Status:** Information about the remaining battery life of the headphones.

4. **User Guides and Tutorials:** A guide section within the app can assist users in understanding the features and functionalities of the JBL Tune 760NC.

5. **Find My Headphones:** Some apps offer a feature to help locate misplaced or lost headphones.

6. **Touch Control Customization:** If the headphones have touch controls, the app may allow users to customize these controls based on their preferences.

7. **Noise Cancellation Settings:** If the headphones have noise-cancelling capabilities, the app might allow users to adjust the level of noise cancellation.

For the most accurate and up-to-date information, I recommend checking the official JBL website or contacting JBL customer support. They would be able to provide the latest details about the JBL Tune 760NC Guide application and its features.