diff --git a/keyserver/package.json b/keyserver/package.json
--- a/keyserver/package.json
+++ b/keyserver/package.json
@@ -48,6 +48,7 @@
     "common-tags": "^1.7.2",
     "cookie-parser": "^1.4.3",
     "dateformat": "^3.0.3",
+    "detect-browser": "^4.0.4",
     "ethers": "^5.7.2",
     "express": "^4.17.3",
     "express-ws": "^4.0.0",
diff --git a/keyserver/src/keyserver.js b/keyserver/src/keyserver.js
--- a/keyserver/src/keyserver.js
+++ b/keyserver/src/keyserver.js
@@ -3,6 +3,7 @@
 import olm from '@matrix-org/olm';
 import cluster from 'cluster';
 import cookieParser from 'cookie-parser';
+import { detect as detectBrowser } from 'detect-browser';
 import express from 'express';
 import expressWs from 'express-ws';
 import os from 'os';
@@ -127,8 +128,14 @@
       // should redirect the user to a place from which the app can be
       // downloaded.
       router.get('/invite/:secret', (req, res) => {
+        const userAgent = req.get('User-Agent');
+        const detectionResult = detectBrowser(userAgent);
+        const redirectUrl =
+          detectionResult.os === 'Android OS'
+            ? stores.googlePlayUrl
+            : stores.appStoreUrl;
         res.writeHead(301, {
-          Location: stores.appStoreUrl,
+          Location: redirectUrl,
         });
         res.end();
       });
diff --git a/lib/facts/stores.js b/lib/facts/stores.js
--- a/lib/facts/stores.js
+++ b/lib/facts/stores.js
@@ -2,6 +2,8 @@
 
 const stores = {
   appStoreUrl: 'https://apps.apple.com/us/app/comm-messenger/id1574433435',
+  googlePlayUrl:
+    'https://play.google.com/store/apps/details?id=app.comm.android',
 };
 
 export default stores;