diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1703aaa..548dbc6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -120,8 +120,9 @@ jobs:
           if [ -z "$notes" ]; then
             notes="- Bug fixes and improvements"
           fi
-          echo "$notes" > /tmp/release_notes.txt
-          echo "notes_file=/tmp/release_notes.txt" >> "$GITHUB_OUTPUT"
+          mkdir -p /tmp/whatsnew
+          echo "$notes" > /tmp/whatsnew/default
+          echo "notes_file=/tmp/whatsnew/default" >> "$GITHUB_OUTPUT"
 
       - name: Upload to Google Play
         uses: r0adkll/upload-google-play@v1.1.5
@@ -132,7 +133,7 @@ jobs:
           tracks: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.track || 'beta' }}
           status: completed
           inAppUpdatePriority: 2
-          releaseNotesFile: /tmp/release_notes.txt
+          whatsNewDirectory: /tmp/whatsnew/
 
       - name: Create GitHub Release
         env:
@@ -140,7 +141,7 @@ jobs:
         run: |
           gh release create "v${{ steps.bump.outputs.new_version_name }}" \
             --title "v${{ steps.bump.outputs.new_version_name }}" \
-            --notes-file /tmp/release_notes.txt \
+            --notes-file /tmp/whatsnew/default \
             app/build/outputs/bundle/release/app-release.aab
 
       - name: Commit version bump
diff --git a/.github/workflows/build_bundle.yml b/.github/workflows/build_bundle.yml
index 6c49cbe..33bf371 100644
--- a/.github/workflows/build_bundle.yml
+++ b/.github/workflows/build_bundle.yml
@@ -98,6 +98,22 @@ jobs:
           mv app/build/outputs/bundle/release/app-release.aab \
              app/build/outputs/bundle/release/SensorApp-v${{ steps.get_version.outputs.new_version_name }}-release.aab
 
+      - name: Generate release notes
+        id: notes
+        run: |
+          prev_tag=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
+          if [ -n "$prev_tag" ]; then
+            notes=$(git log "$prev_tag"..HEAD --oneline --no-merges --format="- %s" 2>/dev/null || true)
+          else
+            notes=$(git log --oneline --no-merges --format="- %s" -20 2>/dev/null || true)
+          fi
+          if [ -z "$notes" ]; then
+            notes="- Bug fixes and improvements"
+          fi
+          mkdir -p whatsnew
+          echo "$notes" > whatsnew/default
+          echo "notes_file=whatsnew/default" >> "$GITHUB_OUTPUT"
+
       - name: Upload to Google Play Store
         uses: r0adkll/upload-google-play@v1.1.3
         with:
diff --git a/IARC_RATING.md b/IARC_RATING.md
new file mode 100644
index 0000000..5bb8cdc
--- /dev/null
+++ b/IARC_RATING.md
@@ -0,0 +1,9 @@
+# IARC Content Rating
+
+| Field | Value |
+|-------|-------|
+| Global Rating ID | `d0c8a1cd-2033-8636-8c60-3f60a4237282` |
+| Product Title | Sensor App |
+| Company | Sheyash Pattewar |
+| Rating Date | July 13, 2026 |
+| Storefront | Google Play |
diff --git a/previews/compass.png b/previews/compass.png
deleted file mode 100644
index d266998..0000000
Binary files a/previews/compass.png and /dev/null differ
diff --git a/previews/dashboard.png b/previews/dashboard.png
deleted file mode 100644
index e47c32c..0000000
Binary files a/previews/dashboard.png and /dev/null differ
diff --git a/previews/detail.png b/previews/detail.png
deleted file mode 100644
index ef5f8b7..0000000
Binary files a/previews/detail.png and /dev/null differ
diff --git a/previews/history.png b/previews/history.png
deleted file mode 100644
index 7cb3f96..0000000
Binary files a/previews/history.png and /dev/null differ
diff --git a/previews/settings.png b/previews/settings.png
deleted file mode 100644
index 8de1ef2..0000000
Binary files a/previews/settings.png and /dev/null differ
diff --git a/rotation_vector_screen_mockup.html b/rotation_vector_screen_mockup.html
new file mode 100644
index 0000000..856391b
--- /dev/null
+++ b/rotation_vector_screen_mockup.html
@@ -0,0 +1,66 @@
+<div style="background: var(--surface-1); border-radius: 32px; padding: 12px; max-width: 340px; margin: 0 auto;">
+  <div style="background: var(--surface-2); border-radius: 24px; overflow: hidden; border: 0.5px solid var(--border);">
+
+    <div style="display:flex; justify-content:space-between; align-items:center; padding: 10px 18px 4px; font-size: 12px; color: var(--text-muted);">
+      <span>9:41</span>
+      <span><i class="ti ti-wifi" style="font-size:14px;" aria-hidden="true"></i></span>
+    </div>
+
+    <div style="padding: 8px 18px 16px; display:flex; align-items:center; justify-content:space-between;">
+      <div>
+        <h1 style="margin:0;">Orientation</h1>
+        <p style="margin:2px 0 0; font-size:13px; color:var(--text-secondary);">Rotation vector</p>
+      </div>
+      <div style="width:36px; height:36px; border-radius:50%; background:var(--bg-success); display:flex; align-items:center; justify-content:center;">
+        <i class="ti ti-player-play" style="font-size:18px; color:var(--text-success);" aria-hidden="true"></i>
+      </div>
+    </div>
+
+    <!-- Orientation indicator: phone silhouette rotated -->
+    <div style="display:flex; justify-content:center; padding: 8px 0 4px;">
+      <svg viewBox="0 0 220 220" style="width:200px; height:200px;" role="img" aria-label="Device orientation indicator showing a slight rotation">
+        <circle cx="110" cy="110" r="95" fill="none" stroke="#B4B2A9" stroke-width="1"/>
+        <g transform="rotate(18 110 110) skewX(-6)">
+          <rect x="82" y="55" width="56" height="110" rx="10" fill="#CECBF6" stroke="#534AB7" stroke-width="1.5"/>
+          <circle cx="110" cy="145" r="4" fill="#3C3489"/>
+          <rect x="94" y="65" width="32" height="55" rx="2" fill="#F1EFE8"/>
+        </g>
+      </svg>
+    </div>
+
+    <div style="padding: 8px 18px 0; display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px;">
+      <div style="background:var(--surface-1); border-radius:var(--radius); padding:10px 6px; text-align:center;">
+        <p style="margin:0; font-size:12px; color:var(--text-secondary); font-weight:500;">Azimuth</p>
+        <p style="margin:4px 0 0; font-size:17px; font-weight:500;">42°</p>
+      </div>
+      <div style="background:var(--surface-1); border-radius:var(--radius); padding:10px 6px; text-align:center;">
+        <p style="margin:0; font-size:12px; color:var(--text-secondary); font-weight:500;">Pitch</p>
+        <p style="margin:4px 0 0; font-size:17px; font-weight:500;">-6°</p>
+      </div>
+      <div style="background:var(--surface-1); border-radius:var(--radius); padding:10px 6px; text-align:center;">
+        <p style="margin:0; font-size:12px; color:var(--text-secondary); font-weight:500;">Roll</p>
+        <p style="margin:4px 0 0; font-size:17px; font-weight:500;">18°</p>
+      </div>
+    </div>
+
+    <div style="margin:16px 18px 0; background:var(--surface-1); border-radius:12px; padding: 10px 12px;">
+      <p style="margin:0 0 4px; font-size:12px; color:var(--text-muted);">Quaternion (x, y, z, w)</p>
+      <p style="margin:0; font-size:13px; font-family:var(--font-mono); color:var(--text-secondary);">0.08, 0.16, 0.36, 0.92</p>
+    </div>
+
+    <div style="border-top:0.5px solid var(--border); display:flex; justify-content:space-around; padding: 10px 0; margin-top:16px;">
+      <div style="display:flex; flex-direction:column; align-items:center; gap:2px;">
+        <i class="ti ti-chart-bar" style="font-size:20px; color:var(--text-accent);" aria-hidden="true"></i>
+        <span style="font-size:10px; color:var(--text-accent);">Monitor</span>
+      </div>
+      <div style="display:flex; flex-direction:column; align-items:center; gap:2px;">
+        <i class="ti ti-history" style="font-size:20px; color:var(--text-muted);" aria-hidden="true"></i>
+        <span style="font-size:10px; color:var(--text-muted);">History</span>
+      </div>
+      <div style="display:flex; flex-direction:column; align-items:center; gap:2px;">
+        <i class="ti ti-user" style="font-size:20px; color:var(--text-muted);" aria-hidden="true"></i>
+        <span style="font-size:10px; color:var(--text-muted);">Profile</span>
+      </div>
+    </div>
+  </div>
+</div>
\ No newline at end of file
diff --git a/whatsnew/default b/whatsnew/default
new file mode 100644
index 0000000..7a7fb91
--- /dev/null
+++ b/whatsnew/default
@@ -0,0 +1,8 @@
+- Sensor UI redesign: accelerometer, gravity bubble level, rotation vector orientation
+- Multi-axis chart for sensor data visualization
+- Compass improvements: level indicator with tilt dot, radial label alignment
+- Dashboard redesign with sensor category grouping
+- 3D rotating cube visualization for gyroscope
+- Haptic feedback on proximity, step counter, and gyroscope events
+- Edge-to-edge display fix and general UI polish
+- Bug fixes and performance improvements