Sleep is not simply the absence of wakefulness. Sleep is an active procedure, normally happening every night, and is absolutely vital. Good sleep is essential for our well-being. Survival without food can be further than without sleep. Work time and commuting time seem to affect total sleep time and night bedtime. Social and work obligation can, therefore, suppress sleep time. Sleep deprived individuals may be facing anxiety and depression symptoms.

The aim of this study is to investigate the presence of anxiety and depression symptoms among adults with the use of the smartphone application Onar. Onar app will be used to gather information from wearable devices of the users including total sleep time, sleep efficiency, wake after sleep onset time. An established questionnaire (Hospital Anxiety Depression Scale/ HADS) will be used to quantify and detect the presence of anxiety and depression in the study population.

Inclusion Criteria:

• Acceptance of terms of use of the application must be done prior to participation in the study.
• Male and female adults aged ≥18 years old and ≤60 years old.
• Subjects using the application on a daily basis for at least 1 week prior to participation.

Exclusion Criteria:

• History of alcohol or other substance abuse.

Subjects using the application on a daily basis for at least 1 week prior to participation will be eligible for participation. After the first full week of data will be over, the application will show a message asking for participation in the study and acceptance of terms.

Participants will continue using their smartwatch as usual and data will be collected from a period of 2 week for each subject. At the end of the 2-week period a new message will be asking the participant to complete the Hospital Anxiety and Depression Questionnaire (HADS) and the Epworth Sleepiness Scale (ESS) and the total score will be stored.