diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index bdc3998794..a096f374b4 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -13,7 +13,8 @@ on:
       - "apps/expo/vitest.config.ts"
       - "apps/expo/utils/**"
       - "apps/expo/lib/utils/**"
-      - "apps/expo/features/packs/utils/**"
+      - "apps/expo/features/**/utils/**"
+      - ".github/workflows/unit-tests.yml"
   pull_request:
     branches: ["**"]
     paths:
@@ -26,7 +27,8 @@ on:
       - "apps/expo/vitest.config.ts"
       - "apps/expo/utils/**"
       - "apps/expo/lib/utils/**"
-      - "apps/expo/features/packs/utils/**"
+      - "apps/expo/features/**/utils/**"
+      - ".github/workflows/unit-tests.yml"
 
 permissions:
   contents: read
diff --git a/apps/expo/features/feed/utils/__tests__/feedUtils.test.ts b/apps/expo/features/feed/utils/__tests__/feedUtils.test.ts
new file mode 100644
index 0000000000..3ddc667200
--- /dev/null
+++ b/apps/expo/features/feed/utils/__tests__/feedUtils.test.ts
@@ -0,0 +1,124 @@
+import { describe, expect, it, vi } from 'vitest';
+
+// Mock clientEnvs before importing the module under test so that
+// buildPostImageUrl has a deterministic CDN base URL.
+vi.mock('expo-app/env/clientEnvs', () => ({
+  clientEnvs: {
+    EXPO_PUBLIC_R2_PUBLIC_URL: 'https://cdn.example.com',
+  },
+}));
+
+// Also mock getRelativeTime so that formatRelativeDate has a predictable
+// alias target that does not depend on the current clock.
+vi.mock('expo-app/lib/utils/getRelativeTime', () => ({
+  getRelativeTime: (input: string | Date) => `relative(${String(input)})`,
+}));
+
+import type { Comment, Post } from '../../types';
+import { buildPostImageUrl, formatAuthorName, formatRelativeDate } from '../index';
+
+const basePost: Post = {
+  id: 1,
+  userId: 42,
+  caption: 'hello',
+  images: [],
+  createdAt: '2024-01-01T00:00:00.000Z',
+  updatedAt: '2024-01-01T00:00:00.000Z',
+  likeCount: 0,
+  commentCount: 0,
+  likedByMe: false,
+};
+
+const baseComment: Comment = {
+  id: 1,
+  postId: 1,
+  userId: 42,
+  content: 'nice',
+  parentCommentId: null,
+  createdAt: '2024-01-01T00:00:00.000Z',
+  updatedAt: '2024-01-01T00:00:00.000Z',
+  likeCount: 0,
+  likedByMe: false,
+};
+
+describe('feed/utils', () => {
+  // ---------------------------------------------------------------------------
+  // buildPostImageUrl
+  // ---------------------------------------------------------------------------
+  describe('buildPostImageUrl', () => {
+    it('joins the CDN base URL with the image key', () => {
+      expect(buildPostImageUrl('posts/abc.jpg')).toBe('https://cdn.example.com/posts/abc.jpg');
+    });
+
+    it('does not double-encode or trim the image key', () => {
+      expect(buildPostImageUrl('folder/sub folder/image (1).png')).toBe(
+        'https://cdn.example.com/folder/sub folder/image (1).png',
+      );
+    });
+
+    it('handles an empty image key by returning the base URL with a trailing slash', () => {
+      expect(buildPostImageUrl('')).toBe('https://cdn.example.com/');
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // formatAuthorName
+  // ---------------------------------------------------------------------------
+  describe('formatAuthorName', () => {
+    it('returns "Unknown" when the author is missing', () => {
+      expect(formatAuthorName(basePost)).toBe('Unknown');
+      expect(formatAuthorName(baseComment)).toBe('Unknown');
+    });
+
+    it('returns "first last" when both names are present', () => {
+      const post: Post = {
+        ...basePost,
+        author: { id: 1, firstName: 'Ada', lastName: 'Lovelace' },
+      };
+      expect(formatAuthorName(post)).toBe('Ada Lovelace');
+    });
+
+    it('returns just the first name when only firstName is present', () => {
+      const post: Post = {
+        ...basePost,
+        author: { id: 1, firstName: 'Ada', lastName: null },
+      };
+      expect(formatAuthorName(post)).toBe('Ada');
+    });
+
+    it('returns just the last name when only lastName is present', () => {
+      const post: Post = {
+        ...basePost,
+        author: { id: 1, firstName: null, lastName: 'Lovelace' },
+      };
+      expect(formatAuthorName(post)).toBe('Lovelace');
+    });
+
+    it('returns "User" when the author exists but both names are null', () => {
+      const post: Post = {
+        ...basePost,
+        author: { id: 1, firstName: null, lastName: null },
+      };
+      expect(formatAuthorName(post)).toBe('User');
+    });
+
+    it('also works for Comment entities', () => {
+      const comment: Comment = {
+        ...baseComment,
+        author: { id: 1, firstName: 'Grace', lastName: 'Hopper' },
+      };
+      expect(formatAuthorName(comment)).toBe('Grace Hopper');
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // formatRelativeDate (deprecated alias of getRelativeTime)
+  // ---------------------------------------------------------------------------
+  describe('formatRelativeDate', () => {
+    it('delegates to getRelativeTime', () => {
+      expect(formatRelativeDate('2024-01-01T00:00:00.000Z')).toBe(
+        'relative(2024-01-01T00:00:00.000Z)',
+      );
+    });
+  });
+});
diff --git a/apps/expo/features/pack-templates/utils/__tests__/computePacktemplateWeight.test.ts b/apps/expo/features/pack-templates/utils/__tests__/computePacktemplateWeight.test.ts
new file mode 100644
index 0000000000..c9f4f72480
--- /dev/null
+++ b/apps/expo/features/pack-templates/utils/__tests__/computePacktemplateWeight.test.ts
@@ -0,0 +1,150 @@
+import { describe, expect, it, vi } from 'vitest';
+import type { PackTemplate, PackTemplateItem } from '../../types';
+
+// The SUT imports convertFromGrams/convertToGrams from the packs/utils barrel,
+// which also re-exports uploadImage (expo-file-system) and computeCategories
+// (expo-app/features/auth/store). Replace the barrel with the real pure
+// conversion helpers so the test stays in a Node environment.
+vi.mock('expo-app/features/packs/utils', async () => {
+  const fromGrams = await import('expo-app/features/packs/utils/convertFromGrams');
+  const toGrams = await import('expo-app/features/packs/utils/convertToGrams');
+  return {
+    convertFromGrams: fromGrams.convertFromGrams,
+    convertToGrams: toGrams.convertToGrams,
+  };
+});
+
+import { computePackTemplateWeights } from '../computePacktemplateWeight';
+
+type TemplateInput = Omit<PackTemplate, 'baseWeight' | 'totalWeight'>;
+
+function makeItem(overrides: Partial<PackTemplateItem> = {}): PackTemplateItem {
+  return {
+    id: 'item-1',
+    packTemplateId: 'tpl-1',
+    name: 'Item',
+    weight: 100,
+    weightUnit: 'g',
+    quantity: 1,
+    category: 'gear',
+    consumable: false,
+    worn: false,
+    deleted: false,
+    ...overrides,
+  };
+}
+
+function makeTemplate(items: PackTemplateItem[]): TemplateInput {
+  return {
+    id: 'tpl-1',
+    name: 'Template',
+    category: 'hiking',
+    isAppTemplate: false,
+    items,
+    deleted: false,
+    localCreatedAt: '2024-01-01T00:00:00.000Z',
+    localUpdatedAt: '2024-01-01T00:00:00.000Z',
+  };
+}
+
+describe('computePackTemplateWeights', () => {
+  // ---------------------------------------------------------------------------
+  // Empty templates
+  // ---------------------------------------------------------------------------
+  describe('with no items', () => {
+    it('returns 0 for base and total weight (default unit: grams)', () => {
+      const result = computePackTemplateWeights(makeTemplate([]));
+      expect(result.baseWeight).toBe(0);
+      expect(result.totalWeight).toBe(0);
+    });
+
+    it('returns 0 regardless of preferred unit', () => {
+      const result = computePackTemplateWeights(makeTemplate([]), 'kg');
+      expect(result.baseWeight).toBe(0);
+      expect(result.totalWeight).toBe(0);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Non-consumable / non-worn gear (counts toward base and total)
+  // ---------------------------------------------------------------------------
+  describe('with base gear only', () => {
+    it('sums weights into base and total in grams by default', () => {
+      const result = computePackTemplateWeights(
+        makeTemplate([
+          makeItem({ id: 'a', weight: 500, weightUnit: 'g', quantity: 1 }),
+          makeItem({ id: 'b', weight: 1, weightUnit: 'kg', quantity: 2 }),
+        ]),
+      );
+      // 500g + 2 * 1000g = 2500g
+      expect(result.baseWeight).toBe(2500);
+      expect(result.totalWeight).toBe(2500);
+    });
+
+    it('converts to the preferred unit (kg)', () => {
+      const result = computePackTemplateWeights(
+        makeTemplate([makeItem({ weight: 2500, weightUnit: 'g', quantity: 1 })]),
+        'kg',
+      );
+      // 2500g => 2.5kg, rounded to 2 decimals
+      expect(result.baseWeight).toBe(2.5);
+      expect(result.totalWeight).toBe(2.5);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Consumable items (counted in total, not base)
+  // ---------------------------------------------------------------------------
+  describe('with consumable items', () => {
+    it('excludes consumables from base but includes them in total', () => {
+      const result = computePackTemplateWeights(
+        makeTemplate([
+          makeItem({ id: 'a', weight: 1000, weightUnit: 'g', consumable: false }),
+          makeItem({ id: 'b', weight: 500, weightUnit: 'g', consumable: true }),
+        ]),
+      );
+      expect(result.baseWeight).toBe(1000);
+      expect(result.totalWeight).toBe(1500);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Worn items (counted in total, not base)
+  // ---------------------------------------------------------------------------
+  describe('with worn items', () => {
+    it('excludes worn items from base but includes them in total', () => {
+      const result = computePackTemplateWeights(
+        makeTemplate([
+          makeItem({ id: 'a', weight: 800, weightUnit: 'g', worn: false }),
+          makeItem({ id: 'b', weight: 200, weightUnit: 'g', worn: true }),
+        ]),
+      );
+      expect(result.baseWeight).toBe(800);
+      expect(result.totalWeight).toBe(1000);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Quantity multiplies the item weight
+  // ---------------------------------------------------------------------------
+  describe('quantity handling', () => {
+    it('multiplies item weight by quantity', () => {
+      const result = computePackTemplateWeights(
+        makeTemplate([makeItem({ weight: 250, weightUnit: 'g', quantity: 4 })]),
+      );
+      expect(result.totalWeight).toBe(1000);
+      expect(result.baseWeight).toBe(1000);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Preserves template metadata
+  // ---------------------------------------------------------------------------
+  it('returns the same template metadata alongside computed weights', () => {
+    const template = makeTemplate([makeItem({ weight: 100, weightUnit: 'g', quantity: 1 })]);
+    const result = computePackTemplateWeights(template);
+    expect(result.id).toBe(template.id);
+    expect(result.name).toBe(template.name);
+    expect(result.items).toHaveLength(1);
+  });
+});