لا تحزن is an Android application developed by RewayaEgycompany under the category of Education & Reference and subcategory Books. The app is free to download and is available on the Google Play Store. The app's name means "Don't be Sad" in English, and it is a comprehensive study of the sad aspects of human life, such as anxiety, despair, loss of confidence, depression, and pessimism. The app offers an in-depth solution to modern problems with guidance from the Quran, Sunnah, and the exemplary lives of the pious predecessors.

The app offers a wide range of content, including inspirational quotes from the Quran and Hadith, stories of the companions of the Prophet (PBUH), and practical advice from renowned scholars and wise people. The app is a perfect blend of Eastern and Western philosophy and offers a unique perspective on how to overcome sadness and live a happy and fulfilling life. Overall, the app is an excellent resource for self-help and is a must-try for anyone looking to improve their mental well-being.