diff --git a/jest.config.js b/jest.config.js
index 16174fe5..19c62ddf 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -18,6 +18,11 @@ module.exports = {
     '^@/(.*)$': '<rootDir>/src/$1',
     '^@react-native-community/netinfo$': '<rootDir>/src/__mocks__/@react-native-community/netinfo.js',
   },
-  setupFilesAfterEnv: [],
+  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
+  // Snapshot serialization is handled by `jest-expo` preset.
+
+
   testEnvironment: 'node',
 };
+
+
diff --git a/jest.setup.js b/jest.setup.js
new file mode 100644
index 00000000..e0a68a8b
--- /dev/null
+++ b/jest.setup.js
@@ -0,0 +1,20 @@
+// Global Jest setup for React Native snapshot/component tests.
+// Fixes:
+// - @react-native-async-storage/async-storage native module null in Jest
+// - Hermes parser crashes when RN internals are loaded during tests
+
+jest.mock('@react-native-async-storage/async-storage', () => {
+  return require('@react-native-async-storage/async-storage/jest/async-storage-mock');
+});
+
+// Mock RN Text to avoid importing RN native Text internals that can trigger
+// Hermes parser issues in Node/Jest.
+jest.mock('react-native/Libraries/Text/Text', () => {
+  const React = require('react');
+  return function MockText(props) {
+    return React.createElement('Text', props, props.children);
+  };
+});
+
+
+
diff --git a/package.json b/package.json
index 86ac0394..51cebeab 100644
--- a/package.json
+++ b/package.json
@@ -73,6 +73,7 @@
     "isr:validate:dry": "node scripts/isr-validate.js --dry-run"
   },
   "dependencies": {
+    "@graphql-tools/schema": "^10.0.31",
     "@react-native-async-storage/async-storage": "2.1.2",
     "@react-native-community/datetimepicker": "^9.1.0",
     "@react-native-community/netinfo": "11.4.1",
@@ -90,10 +91,6 @@
     "bullmq": "^5.79.1",
     "ethers": "^5.8.0",
     "expo": "~53.0.20",
-    "@graphql-tools/schema": "^10.0.31",
-    "graphql": "^16.13.2",
-    "graphql-http": "^1.22.4",
-    "pg": "^8.16.0",
     "expo-application": "~6.1.5",
     "expo-clipboard": "~7.1.5",
     "expo-dev-client": "~5.2.4",
@@ -101,8 +98,12 @@
     "expo-linking": "~7.1.7",
     "expo-notifications": "^0.31.5",
     "expo-status-bar": "~2.2.3",
+    "express": "^4.21.2",
+    "graphql": "^16.13.2",
+    "graphql-http": "^1.22.4",
     "i18next": "^26.0.8",
     "ioredis": "^5.11.1",
+    "pg": "^8.16.0",
     "react": "19.2.5",
     "react-i18next": "^17.0.6",
     "react-native": "0.85.2",
@@ -114,7 +115,6 @@
     "react-native-safe-area-context": "5.7.0",
     "react-native-screens": "~4.24.0",
     "react-native-svg": "15.15.4",
-    "express": "^4.21.2",
     "zod": "^3.23.8",
     "zustand": "^5.0.0"
   },
diff --git a/src/components/common/Button.snapshot.test.tsx b/src/components/common/Button.snapshot.test.tsx
new file mode 100644
index 00000000..feac74a7
--- /dev/null
+++ b/src/components/common/Button.snapshot.test.tsx
@@ -0,0 +1,48 @@
+import React from 'react';
+import { Platform } from 'react-native';
+import { render } from '@testing-library/react-native';
+
+import { ThemeProvider } from '../../context/ThemeContext';
+
+import { Button as ButtonComponent } from './Button';
+
+jest.mock('../../hooks/useThemeColors', () => ({
+  useThemeColors: () => ({
+    brand: { primary: '#000000', secondary: '#111111' },
+    accent: '#222222',
+    status: { error: '#ff0000' },
+    onPrimary: '#ffffff',
+    onSecondary: '#ffffff',
+    background: { card: '#ffffff' },
+    border: { default: '#cccccc' },
+  }),
+}));
+
+
+
+describe('Button (snapshot)', () => {
+  it('renders default primary button', () => {
+
+
+
+    const { toJSON } = render(
+      <ThemeProvider>
+        <ButtonComponent title="Save" onPress={jest.fn()} />
+      </ThemeProvider>
+    );
+
+    expect(toJSON()).toMatchSnapshot({ platform: Platform.OS });
+  });
+
+  it('renders disabled state', () => {
+    const { toJSON } = render(
+      <ThemeProvider>
+        <ButtonComponent title="Save" onPress={jest.fn()} disabled />
+      </ThemeProvider>
+    );
+
+    expect(toJSON()).toMatchSnapshot({ platform: Platform.OS });
+  });
+});
+
+
diff --git a/src/components/common/Card.snapshot.test.tsx b/src/components/common/Card.snapshot.test.tsx
new file mode 100644
index 00000000..0b6d2bf7
--- /dev/null
+++ b/src/components/common/Card.snapshot.test.tsx
@@ -0,0 +1,22 @@
+import React from 'react';
+import { Platform, Text } from 'react-native';
+import { render } from '@testing-library/react-native';
+
+import { Card } from './Card';
+import { ThemeProvider } from '../../context/ThemeContext';
+
+describe('Card (snapshot)', () => {
+  it('renders default card with children', () => {
+    const { toJSON } = render(
+      <ThemeProvider>
+        <Card accessibilityLabel="test-card">
+          <Text>Card content</Text>
+        </Card>
+      </ThemeProvider>
+    );
+
+    expect(toJSON()).toMatchSnapshot({ platform: Platform.OS });
+  });
+});
+
+
diff --git a/src/components/subscription/SubscriptionCard.snapshot.test.tsx b/src/components/subscription/SubscriptionCard.snapshot.test.tsx
new file mode 100644
index 00000000..dc7ac40b
--- /dev/null
+++ b/src/components/subscription/SubscriptionCard.snapshot.test.tsx
@@ -0,0 +1,21 @@
+import React from 'react';
+import { Platform } from 'react-native';
+import { render } from '@testing-library/react-native';
+import { SubscriptionCard } from './SubscriptionCard';
+import { mockSubscription } from '../../__fixtures__/subscriptions';
+
+// Match existing behavioural tests: SubscriptionCard depends on zustand-persist + AsyncStorage.
+jest.mock('@react-native-async-storage/async-storage', () =>
+  require('@react-native-async-storage/async-storage/jest/async-storage-mock')
+);
+
+describe('SubscriptionCard (snapshot)', () => {
+  it('renders active subscription card', () => {
+    const { toJSON } = render(
+      <SubscriptionCard subscription={mockSubscription} onPress={jest.fn()} />
+    );
+
+    expect(toJSON()).toMatchSnapshot({ platform: Platform.OS });
+  });
+});
+