add Calm Attack (#126)

README.md

@@ -101,6 +101,7 @@
 - [QuitSmoke](https://github.com/trizin/Quit-Smoke-App) - A Flutter app to help you quit smoking by [trizin](https://github.com/trizin).
 - [WorkoutTracker](https://github.com/jerichoi224/WorkoutTracker) - A Flutter app to help you keep track of workout sessions by [Daniel Choi](https://github.com/jerichoi224).
 - [Meditation App](https://github.com/Re4ch-Jay/Meditation_App) - An app that makes you calm, relief, relax, and focus 🧘 by [Phat Panhareach](https://github.com/Re4ch-Jay/).
+- [Calm Attack](https://github.com/FatoomRe/Calm-Attack) - An app that help to manage panic attacks. Provides a range of exercises and techniques to help users calm their mind and body during anxiety moments. by [FatoomRe](https://github.com/FatoomRe).
 
 ### Games