Update README.md

Author: ShiftHackZ

README.md

@@ -8,6 +8,7 @@
 
 [![Google Play](docs/assets/google_play.png)](https://play.google.com/store/apps/details?id=com.shifthackz.aisdv1.app)
 [![F-Droid](docs/assets/fdroid.png)](https://f-droid.org/packages/com.shifthackz.aisdv1.app.foss)
+[![4pda](docs/assets/4pda.png)](https://4pda.to/forum/index.php?showtopic=1082639)
 
 Stable Diffusion AI is an easy-to-use app that lets you quickly generate images from text or other images with just a few clicks. With this app, you can communicate with your own server and generate high-quality images in seconds.