Mental health problems are a matter of high urgency, especially during a pandemic. Mental health can be experienced by various people. The number of mental cases is 400,000. Every 7 out of 100 people experience mental health. This number is increasing every year coupled with the pandemic conditions which have caused various changes in various sectors. The impact caused by mental health is very serious and can even lead to suicide. The purpose of this article is to provide information about the SADLING.ID application as a solution to dealing with mental health problems and to show the importance of maintaining mental health, especially students and students with the SADLING.ID application during a pandemic. SADLING. The ID application is a mental friend application that was initiated by students of State University of Malang in the Student Creativity Program (PKM) and passed the 34th National Student Science Week (PIMNAS) in 2021. The methods used are interface design, business concept creation, and marketing. The results obtained are that the SADLING.ID application is an innovative and effective solution for use in maintaining mental health. Conclusion: mental health can be experienced by various groups so it is important to maintain mental health. Maintaining mental health with the application is considered to be able to overcome deficiencies in existing methods by using the SADLING application. The results obtained are that the SADLING.ID application is an innovative and effective solution for use in maintaining mental health. Conclusion: mental health can be experienced by various groups so it is important to maintain mental health. Maintaining mental health with the application is considered to be able to overcome deficiencies in existing methods by using the SADLING application. The results obtained are that the SADLING.ID application is an innovative and effective solution for use in maintaining mental health. Conclusion: mental health can be experienced by various groups so it is important to maintain mental health. Maintaining mental health with the application is considered to be able to overcome deficiencies in existing methods by using the SADLING application.