diff --git a/plugin/src/__tests__/index.test.ts b/plugin/src/__tests__/index.test.ts
new file mode 100644
index 0000000..f33bc7d
--- /dev/null
+++ b/plugin/src/__tests__/index.test.ts
@@ -0,0 +1,117 @@
+import { addHealthConnectPermissionsRationale } from '../index';
+
+// The plugin module reads its own package.json at load time; stub it so the
+// test does not depend on terra-react being resolvable from node_modules.
+jest.mock(
+  'terra-react/package.json',
+  () => ({ name: 'terra-react', version: '0.0.0' }),
+  { virtual: true }
+);
+
+const SHOW_RATIONALE = 'androidx.health.ACTION_SHOW_PERMISSIONS_RATIONALE';
+const VIEW_PERMISSION_USAGE = 'android.intent.action.VIEW_PERMISSION_USAGE';
+const HEALTH_PERMISSIONS = 'android.intent.category.HEALTH_PERMISSIONS';
+
+const freshManifest = (): any => ({
+  manifest: {
+    $: { 'xmlns:android': 'http://schemas.android.com/apk/res/android' },
+    application: [
+      {
+        $: { 'android:name': '.MainApplication' },
+        activity: [
+          {
+            $: { 'android:name': '.MainActivity', 'android:exported': 'true' },
+            'intent-filter': [
+              {
+                action: [
+                  { $: { 'android:name': 'android.intent.action.MAIN' } },
+                ],
+                category: [
+                  { $: { 'android:name': 'android.intent.category.LAUNCHER' } },
+                ],
+              },
+            ],
+          },
+        ],
+      },
+    ],
+  },
+});
+
+const filtersWithAction = (component: any, action: string) =>
+  (component['intent-filter'] ?? []).filter((filter: any) =>
+    (filter.action ?? []).some((a: any) => a.$['android:name'] === action)
+  );
+
+describe('addHealthConnectPermissionsRationale', () => {
+  it('adds the legacy rationale filter and the Android 14+ activity-alias', () => {
+    const manifest = freshManifest();
+    addHealthConnectPermissionsRationale(manifest);
+
+    const application = manifest.manifest.application[0];
+    const mainActivity = application.activity[0];
+
+    expect(filtersWithAction(mainActivity, SHOW_RATIONALE)).toHaveLength(1);
+    // The launcher intent-filter must survive.
+    expect(filtersWithAction(mainActivity, 'android.intent.action.MAIN')).toHaveLength(1);
+
+    expect(application['activity-alias']).toHaveLength(1);
+    const alias = application['activity-alias'][0];
+    expect(alias.$['android:exported']).toBe('true');
+    expect(alias.$['android:targetActivity']).toBe('.MainActivity');
+    expect(alias.$['android:permission']).toBe(
+      'android.permission.START_VIEW_PERMISSION_USAGE'
+    );
+    expect(alias['intent-filter'][0].action[0].$['android:name']).toBe(
+      VIEW_PERMISSION_USAGE
+    );
+    expect(alias['intent-filter'][0].category[0].$['android:name']).toBe(
+      HEALTH_PERMISSIONS
+    );
+  });
+
+  it('is idempotent across repeated prebuilds', () => {
+    const manifest = freshManifest();
+    addHealthConnectPermissionsRationale(manifest);
+    addHealthConnectPermissionsRationale(manifest);
+    addHealthConnectPermissionsRationale(manifest);
+
+    const application = manifest.manifest.application[0];
+    expect(filtersWithAction(application.activity[0], SHOW_RATIONALE)).toHaveLength(1);
+    expect(application['activity-alias']).toHaveLength(1);
+  });
+
+  it('does not duplicate a rationale the app already declares itself', () => {
+    const manifest = freshManifest();
+    manifest.manifest.application[0].activity[0]['intent-filter'].push({
+      action: [{ $: { 'android:name': SHOW_RATIONALE } }],
+    });
+    manifest.manifest.application[0]['activity-alias'] = [
+      {
+        $: { 'android:name': 'ExistingAlias', 'android:targetActivity': '.MainActivity' },
+        'intent-filter': [
+          {
+            action: [{ $: { 'android:name': VIEW_PERMISSION_USAGE } }],
+            category: [{ $: { 'android:name': HEALTH_PERMISSIONS } }],
+          },
+        ],
+      },
+    ];
+
+    addHealthConnectPermissionsRationale(manifest);
+
+    const application = manifest.manifest.application[0];
+    expect(filtersWithAction(application.activity[0], SHOW_RATIONALE)).toHaveLength(1);
+    expect(application['activity-alias']).toHaveLength(1);
+    expect(application['activity-alias'][0].$['android:name']).toBe('ExistingAlias');
+  });
+
+  it('throws when the manifest has no main activity', () => {
+    const manifest: any = {
+      manifest: {
+        application: [{ $: { 'android:name': '.MainApplication' }, activity: [] }],
+      },
+    };
+    expect(() => addHealthConnectPermissionsRationale(manifest)).toThrow();
+  });
+});
diff --git a/plugin/src/index.js b/plugin/src/index.js
index f3074cc..359129b 100644
--- a/plugin/src/index.js
+++ b/plugin/src/index.js
@@ -1,4 +1,9 @@
-import { withAppDelegate, createRunOncePlugin } from '@expo/config-plugins';
+import {
+  AndroidConfig,
+  withAndroidManifest,
+  withAppDelegate,
+  createRunOncePlugin,
+} from '@expo/config-plugins';
 const withTerraBackgroundDelivery = (config) => {
   config = withAppDelegate(config, (delegateConfig) => {
     const { contents } = delegateConfig.modResults;
@@ -41,9 +46,84 @@ const withTerraBackgroundDelivery = (config) => {
   });
   return config;
 };
+
+const SHOW_RATIONALE_ACTION =
+  'androidx.health.ACTION_SHOW_PERMISSIONS_RATIONALE';
+const VIEW_PERMISSION_USAGE_ACTION =
+  'android.intent.action.VIEW_PERMISSION_USAGE';
+const HEALTH_PERMISSIONS_CATEGORY = 'android.intent.category.HEALTH_PERMISSIONS';
+const START_VIEW_PERMISSION_USAGE =
+  'android.permission.START_VIEW_PERMISSION_USAGE';
+const RATIONALE_ALIAS_NAME = 'ViewPermissionUsageActivity';
+
+const declaresAction = (component, action) =>
+  (component['intent-filter'] ?? []).some((filter) =>
+    (filter.action ?? []).some((entry) => entry.$['android:name'] === action)
+  );
+
+// Without this rationale component, Android 14+/API 36 silently revokes Health Connect reads: auth still succeeds, reads return empty.
+export function addHealthConnectPermissionsRationale(androidManifest) {
+  const application = androidManifest.manifest.application?.[0];
+  if (!application) {
+    throw new Error(
+      'terra-react: AndroidManifest is missing the <application> element'
+    );
+  }
+
+  const existing = [
+    ...(application.activity ?? []),
+    ...(application['activity-alias'] ?? []),
+  ];
+  const mainActivity =
+    AndroidConfig.Manifest.getMainActivityOrThrow(androidManifest);
+
+  if (
+    !existing.some((component) => declaresAction(component, SHOW_RATIONALE_ACTION))
+  ) {
+    mainActivity['intent-filter'] = mainActivity['intent-filter'] ?? [];
+    mainActivity['intent-filter'].push({
+      action: [{ $: { 'android:name': SHOW_RATIONALE_ACTION } }],
+    });
+  }
+
+  if (
+    !existing.some((component) =>
+      declaresAction(component, VIEW_PERMISSION_USAGE_ACTION)
+    )
+  ) {
+    application['activity-alias'] = application['activity-alias'] ?? [];
+    application['activity-alias'].push({
+      $: {
+        'android:name': RATIONALE_ALIAS_NAME,
+        'android:exported': 'true',
+        'android:targetActivity': mainActivity.$['android:name'],
+        'android:permission': START_VIEW_PERMISSION_USAGE,
+      },
+      'intent-filter': [
+        {
+          action: [{ $: { 'android:name': VIEW_PERMISSION_USAGE_ACTION } }],
+          category: [{ $: { 'android:name': HEALTH_PERMISSIONS_CATEGORY } }],
+        },
+      ],
+    });
+  }
+
+  return androidManifest;
+}
+
+const withTerraHealthConnectRationale = (config) =>
+  withAndroidManifest(config, (manifestConfig) => {
+    manifestConfig.modResults = addHealthConnectPermissionsRationale(
+      manifestConfig.modResults
+    );
+    return manifestConfig;
+  });
+
+const withTerra = (config) => {
+  config = withTerraBackgroundDelivery(config);
+  config = withTerraHealthConnectRationale(config);
+  return config;
+};
+
 const pkg = require('terra-react/package.json');
-export default createRunOncePlugin(
-  withTerraBackgroundDelivery,
-  pkg.name,
-  pkg.version
-);
+export default createRunOncePlugin(withTerra, pkg.name, pkg.version);
diff --git a/plugin/src/index.ts b/plugin/src/index.ts
index 5530225..fe05d53 100644
--- a/plugin/src/index.ts
+++ b/plugin/src/index.ts
@@ -1,5 +1,7 @@
 import {
+  AndroidConfig,
   ConfigPlugin,
+  withAndroidManifest,
   withAppDelegate,
   createRunOncePlugin,
 } from '@expo/config-plugins';
@@ -52,9 +54,96 @@ const withTerraBackgroundDelivery: ConfigPlugin = (config) => {
   return config;
 };
 
+const SHOW_RATIONALE_ACTION =
+  'androidx.health.ACTION_SHOW_PERMISSIONS_RATIONALE';
+const VIEW_PERMISSION_USAGE_ACTION =
+  'android.intent.action.VIEW_PERMISSION_USAGE';
+const HEALTH_PERMISSIONS_CATEGORY = 'android.intent.category.HEALTH_PERMISSIONS';
+const START_VIEW_PERMISSION_USAGE =
+  'android.permission.START_VIEW_PERMISSION_USAGE';
+const RATIONALE_ALIAS_NAME = 'ViewPermissionUsageActivity';
+
+type ManifestActivity = AndroidConfig.Manifest.ManifestActivity;
+type ManifestApplicationWithAliases =
+  AndroidConfig.Manifest.ManifestApplication & {
+    'activity-alias'?: ManifestActivity[];
+  };
+
+const declaresAction = (
+  component: ManifestActivity,
+  action: string
+): boolean =>
+  (component['intent-filter'] ?? []).some((filter) =>
+    (filter.action ?? []).some((entry) => entry.$['android:name'] === action)
+  );
+
+// Without this rationale component, Android 14+/API 36 silently revokes Health Connect reads: auth still succeeds, reads return empty.
+export function addHealthConnectPermissionsRationale(
+  androidManifest: AndroidConfig.Manifest.AndroidManifest
+): AndroidConfig.Manifest.AndroidManifest {
+  const application = androidManifest.manifest.application?.[0] as
+    | ManifestApplicationWithAliases
+    | undefined;
+  if (!application) {
+    throw new Error(
+      'terra-react: AndroidManifest is missing the <application> element'
+    );
+  }
+
+  const existing: ManifestActivity[] = [
+    ...(application.activity ?? []),
+    ...(application['activity-alias'] ?? []),
+  ];
+  const mainActivity =
+    AndroidConfig.Manifest.getMainActivityOrThrow(androidManifest);
+
+  if (
+    !existing.some((component) => declaresAction(component, SHOW_RATIONALE_ACTION))
+  ) {
+    mainActivity['intent-filter'] = mainActivity['intent-filter'] ?? [];
+    mainActivity['intent-filter'].push({
+      action: [{ $: { 'android:name': SHOW_RATIONALE_ACTION } }],
+    });
+  }
+
+  if (
+    !existing.some((component) =>
+      declaresAction(component, VIEW_PERMISSION_USAGE_ACTION)
+    )
+  ) {
+    application['activity-alias'] = application['activity-alias'] ?? [];
+    application['activity-alias'].push({
+      $: {
+        'android:name': RATIONALE_ALIAS_NAME,
+        'android:exported': 'true',
+        'android:targetActivity': mainActivity.$['android:name'],
+        'android:permission': START_VIEW_PERMISSION_USAGE,
+      },
+      'intent-filter': [
+        {
+          action: [{ $: { 'android:name': VIEW_PERMISSION_USAGE_ACTION } }],
+          category: [{ $: { 'android:name': HEALTH_PERMISSIONS_CATEGORY } }],
+        },
+      ],
+    });
+  }
+
+  return androidManifest;
+}
+
+const withTerraHealthConnectRationale: ConfigPlugin = (config) =>
+  withAndroidManifest(config, (manifestConfig) => {
+    manifestConfig.modResults = addHealthConnectPermissionsRationale(
+      manifestConfig.modResults
+    );
+    return manifestConfig;
+  });
+
+const withTerra: ConfigPlugin = (config) => {
+  config = withTerraBackgroundDelivery(config);
+  config = withTerraHealthConnectRationale(config);
+  return config;
+};
+
 const pkg = require('terra-react/package.json');
-export default createRunOncePlugin(
-  withTerraBackgroundDelivery,
-  pkg.name,
-  pkg.version
-);
+export default createRunOncePlugin(withTerra, pkg.name, pkg.version);