I want to track specific Behavior patterns of my psyche by answering personalized questions during the day. Is there an app that let me do that, or should I use a random reminder and a textfile with the questions?
If you use an Android phone I think PACO has this capacity, while also giving you access to sensor data.
The Reporter app for the iphone allows you to create custom surveys that prompt you randomly throughout the day (with a lot of control over how you want that randomness to look like). http://reporter-app.com/
mysymptoms if you do not mind always a 0-10 scale