Salmo 91 is a free Android application developed by Orações diárias that offers daily prayers for inner peace. The app is designed to provide comfort and positivity to users who may be struggling with anxiety, stress, or other emotional challenges.

Upon opening the app, users are greeted with a simple interface that allows them to select the day of the week and read the corresponding prayer. Each prayer is accompanied by a calming background image and can be easily shared with friends and family via social media.

Overall, Salmo 91 is a great option for those looking to incorporate daily prayers into their routine and find a sense of calm in their daily lives. It's worth noting, however, that the app is only available in Portuguese and may not be suitable for non-Portuguese speakers.