We take personal satisfaction and your security very seriously. If you have any questions about features, usability, technical details, or any other topic, don't hesitate to get in touch with us. We try to give thorough, detailed and personal assistance to everyone.
When you use Master Password for iOS, the app locally records some anonymous usage data for the purpose of troubleshooting. This includes logs (which you can inspect using the Log Viewer) and technical "stack traces" of running threads when the app crashes. Any logged data has been carefully anonymized either by omitting user-specific information or cryptographically hashing it, making it impossible to reverse. Some of this data may be sent over the network, such as in the case of app crashes, to provide us with the information necessary to resolve any issues in a timely manner.
If you have any concerns or questions, please send us a message at masterpassword@lyndir.com. You should get a personal reply within the hour if not in minutes.