AvTraffic is covered by Apple's Standard Licence agreement which can be viewed at the link below.
Apple’s Standard License Agreement
The following precautions must be taken when using AvTraffic in flight.
All traffic and weather information made available through use of AvTraffic is advisory only. It is the pilot’s responsibility to see and avoid traffic and to determine the weather conditions. All such information is deemed reliable but is not guaranteed and should be independently verified. AvTraffic cannot, and does not, verify the information transmitted or displayed. The user assumes total responsibility and risk associated with using all such information.
By using AvTraffic and making in-app purchases, you consent to our sharing of data regarding your usage and consumption of purchased content with Apple, as part of our efforts to resolve refund requests. This information may include details about how you have accessed and interacted with the purchased content. The purpose of sharing this data is to help Apple make an informed decision regarding refund requests. We ensure that such data sharing is done in compliance with Apple's policies and only as necessary to process your requests.