Table 2 LETSGO Application Content

Contact Information

Telephone number and the nurse’s hours of availability for contact

Disease Information

 Treatment

Information, illustrations, videos

 Signs of Recurrence

 Late Effects

Lifestyle Advice

 Physical Activities

Information, illustrations, videos

 Relaxation Activities

 Smoking Cessation

Information

 Nutrition

Activity

 Exercises

Suggestions for exercise programs of various levels with illustrations and videos

 Goal Setting

Participant-reported activity goals for selected activities (minutes)

 Activity Graphs

Display of activities performed (days and weeks), manually logged by the participants

Patient Forms

 Daily Walking Steps

Steps counted by activity tracker, manually logged by the participants

 Minutes Spent on Activities^a

Registration of activities (minutes)

 Symptom Scores^b

Questionnaire with 10 recurrence-specific questions, each rated by participants as “Not at All,” “A Little,” “Quite a Bit,” and “Very Much”

Alarm and instruction to call the study nurse (telephone number provided in the app) if the answers indicate recurrence based on a predefined algorithm and threshold