diff --git a/docs/MobileApp.md b/docs/MobileApp.md
index 92e92383..3736542b 100644
--- a/docs/MobileApp.md
+++ b/docs/MobileApp.md
@@ -53,6 +53,8 @@ eas build --platform ios
 eas build --platform android
 ```
 
+> **Note:** The mobile app uses `expo-build-properties` with `buildReactNativeFromSource: true` for iOS builds. This is required for Expo SDK 54 (React Native 0.81) compatibility — some native modules still use legacy bridge APIs (`RCTBridge`, `RCTViewManager`, etc.) that are no longer included in the default precompiled XCFrameworks. Building React Native from source makes these headers available, at the cost of slightly longer iOS build times.
+
 See the [EAS Build documentation](https://docs.expo.dev/build/introduction/) for full setup instructions.
 
 ## Authentication
diff --git a/mobile/app.json b/mobile/app.json
index 97d8dfd9..7cc083c7 100644
--- a/mobile/app.json
+++ b/mobile/app.json
@@ -46,6 +46,14 @@
     },
     "plugins": [
       "expo-router",
+      [
+        "expo-build-properties",
+        {
+          "ios": {
+            "buildReactNativeFromSource": true
+          }
+        }
+      ],
       [
         "expo-notifications",
         {
diff --git a/mobile/package-lock.json b/mobile/package-lock.json
index eb1ec14d..b1642765 100644
--- a/mobile/package-lock.json
+++ b/mobile/package-lock.json
@@ -15,6 +15,7 @@
         "@react-navigation/native-stack": "^7.2.0",
         "expo": "~54.0.0",
         "expo-auth-session": "~7.0.10",
+        "expo-build-properties": "~1.0.10",
         "expo-camera": "~17.0.10",
         "expo-constants": "~18.0.13",
         "expo-crypto": "~15.0.8",
@@ -6782,6 +6783,53 @@
         "react-native": "*"
       }
     },
+    "node_modules/expo-build-properties": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/expo-build-properties/-/expo-build-properties-1.0.10.tgz",
+      "integrity": "sha512-mFCZbrbrv0AP5RB151tAoRzwRJelqM7bCJzCkxpu+owOyH+p/rFC/q7H5q8B9EpVWj8etaIuszR+gKwohpmu1Q==",
+      "license": "MIT",
+      "dependencies": {
+        "ajv": "^8.11.0",
+        "semver": "^7.6.0"
+      },
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
+    "node_modules/expo-build-properties/node_modules/ajv": {
+      "version": "8.18.0",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.18.0.tgz",
+      "integrity": "sha512-PlXPeEWMXMZ7sPYOHqmDyCJzcfNrUr3fGNKtezX14ykXOEIvyK81d+qydx89KY5O71FKMPaQ2vBfBFI5NHR63A==",
+      "license": "MIT",
+      "dependencies": {
+        "fast-deep-equal": "^3.1.3",
+        "fast-uri": "^3.0.1",
+        "json-schema-traverse": "^1.0.0",
+        "require-from-string": "^2.0.2"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
+      }
+    },
+    "node_modules/expo-build-properties/node_modules/json-schema-traverse": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
+      "integrity": "sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==",
+      "license": "MIT"
+    },
+    "node_modules/expo-build-properties/node_modules/semver": {
+      "version": "7.7.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
+      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/expo-camera": {
       "version": "17.0.10",
       "resolved": "https://registry.npmjs.org/expo-camera/-/expo-camera-17.0.10.tgz",
diff --git a/mobile/package.json b/mobile/package.json
index e14275c4..ccaa2218 100644
--- a/mobile/package.json
+++ b/mobile/package.json
@@ -24,6 +24,7 @@
     "@react-navigation/native-stack": "^7.2.0",
     "expo": "~54.0.0",
     "expo-auth-session": "~7.0.10",
+    "expo-build-properties": "~1.0.10",
     "expo-dev-client": "~6.0.20",
     "expo-font": "~14.0.0",
     "expo-camera": "~17.0.10",