The goal of this clinical trial is to learn if an App-based intervention affects the quality of life in patients with suspected or confirmed endometriosis. The main questions it aims to answer are: * Does the App-based intervention improve the quality of life? * Does it lead to pain relief? Researchers will compare participants using the App to a control group to see if the App works to improve quality of life and endometriosis-related symptoms. Participants will: * Use an App-based intervention or be in the control group (no App-use) for 6 months * Visit or have a telephone consultation after 3 and 6 months * Complete a questionnaire to assess the quality of life at inclusion, after 1, 3 and 6 months