diff --git a/.github/workflows/pr-quality-gate.yml b/.github/workflows/pr-quality-gate.yml
new file mode 100644
index 0000000..d534add
--- /dev/null
+++ b/.github/workflows/pr-quality-gate.yml
@@ -0,0 +1,63 @@
+name: PR Quality Gate (client applications)
+
+on:
+  pull_request:
+    paths:
+      - "js/mobile/**"
+      - "js/desktop/**"
+    branches: [ main ]
+    types: [ opened, synchronize, reopened ]
+
+jobs:
+  mobile:
+    name: Lint & format check
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: js/mobile
+
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js runtime
+        uses: actions/setup-node@v4
+        with:
+          node-node-version: '20'
+          cache: 'yarn'
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Run Code Linter
+        run: yarn lint
+
+      - name: Run Unit Tests
+        run: yarn format:check
+  desktop:
+    name: Lint & format check
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: js/desktop
+
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js runtime
+        uses: actions/setup-node@v4
+        with:
+          node-node-version: '20'
+          cache: 'yarn'
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Run Code Linter
+        run: yarn lint
+
+      - name: Run Unit Tests
+        run: yarn format:check
+
+