Efficacy of a Smartphone App. Designed to Manage Craving & Individual Predictors of Substance Use/Addictive Behavior

Who May Qualify: - Participants requesting help for substance or behavioral addiction in one of the participating specialized addiction treatment centers, and with more than 1-month-delay before treatment admission - Age \>= 18 years of age - With at least one substance or behavioral addiction (DSM-5 criteria) - Affiliated person or beneficiary of a social security scheme. - Free, informed and written consent signed by the participant and the investigator Who Should NOT Join This Trial: - Medical, psychiatric or addiction condition that warrants immediate treatment intervention - Patients with somatic, cognitive or other disorders preventing the use of the device (deafness, impaired vision, illiteracy....) - Difficulty in understanding and / or writing French - Not familiar with the use of smartphone - Individuals participating in another study that includes an ongoing exclusion period - Be deprived of liberty due to an ongoing legal procedure - Individuals under legal protection - Be under guardianship or under curatorship Always talk to your doctor about whether this trial is right for you.