Update README.md

README.md

@@ -15,7 +15,7 @@ The “GPlates-in-schools” program is funded by [AuScope](https://www.auscope.
 
 <div style="display: flex; align-items: center;">
   <span>
-    <a href="https://apps.apple.com/au/app/gplates/id6447170583?itsct=apps_box_badge&amp;itscg=30200" ><img src="https://tools.applemediaservices.com/api/badges/download-on-the-app-store/black/en-us?size=250x83&amp;releaseDate=1689724800" alt="Download on the App Store"  height="83"></a>
+    <a href="https://apps.apple.com/au/app/gplates/id6447170583?itsct=apps_box_badge&amp;itscg=30200" ><img src="https://raw.githubusercontent.com/GPlates/gplates-app/refs/heads/main/resources/apple-store-badge.svg" alt="Download on the App Store"  height="83"></a>
   </span>
   <span>
     <a  href='https://play.google.com/store/apps/dev?id=8357338151517566946'><img height="83"  alt='Get it on Google Play' src='https://www.earthbyte.org/webdav/ftp/incoming/mchin/google-play-badge.png'/>