diff --git a/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.html b/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.html
index bf9c01d7..79bef988 100644
--- a/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.html
+++ b/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.html
@@ -49,25 +49,36 @@
         (onChange)="toggleSelection($event)">
       </p-checkbox>
     }
-
-    @if (progressPercentage !== null) {
-      <p-progressBar
-        [value]="progressPercentage"
-        [showValue]="false"
-        class="cover-progress-bar"
-        [ngClass]="{ 'progress-complete': progressPercentage === 100, 'progress-incomplete': progressPercentage < 100 }">
-      </p-progressBar>
-    }
-    @if (koProgressPercentage !== null) {
-      <p-progressBar
-        [value]="koProgressPercentage"
-        [showValue]="false"
-        [ngClass]="[
-          progressPercentage == null ? 'cover-progress-bar-ko-only' : 'cover-progress-bar-ko-both',
-          koProgressPercentage === 100 ? 'progress-complete-ko' : 'progress-incomplete-ko'
-        ]">
-      </p-progressBar>
-    }
+    <div class="cover-progress-bar-container">
+      @if (progressPercentage !== null) {
+        <p-progressBar
+          [value]="progressPercentage"
+          [showValue]="false"
+          class="cover-progress-bar"
+          [ngClass]="{ 'progress-complete': progressPercentage === 100, 'progress-incomplete': progressPercentage < 100 }">
+        </p-progressBar>
+      }
+      @if (koProgressPercentage !== null) {
+        <p-progressBar
+          [value]="koProgressPercentage"
+          [showValue]="false"
+          class="cover-progress-bar"
+          [ngClass]="[
+            koProgressPercentage === 100 ? 'progress-complete-ko' : 'progress-incomplete-ko'
+          ]">
+        </p-progressBar>
+      }
+      @if (koboProgressPercentage !== null) {
+        <p-progressBar
+          [value]="koboProgressPercentage"
+          [showValue]="false"
+          class="cover-progress-bar"
+          [ngClass]="[
+            koboProgressPercentage === 100 ? 'progress-complete-kobo' : 'progress-incomplete-kobo'
+          ]">
+        </p-progressBar>
+      }
+    </div>
   </div>
 
   <div [hidden]="bottomBarHidden">
diff --git a/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.scss b/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.scss
index 773da19d..ae19f77c 100644
--- a/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.scss
+++ b/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.scss
@@ -123,10 +123,19 @@
   visibility: visible;
 }
 
-.cover-progress-bar,
-.cover-progress-bar-ko-both,
-.cover-progress-bar-ko-only {
+.cover-progress-bar-container {
   position: absolute;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  height: 7.5px;
+  z-index: 2;
+  display: flex;
+  flex-direction: column;
+  justify-content: flex-end;
+}
+
+.cover-progress-bar {
   left: 0;
   right: 0;
   height: 2.5px;
@@ -134,18 +143,6 @@
   opacity: 0.9;
 }
 
-.cover-progress-bar {
-  bottom: 2.5px;
-}
-
-.cover-progress-bar-ko-both {
-  bottom: 0;
-}
-
-.cover-progress-bar-ko-only {
-  bottom: 2.5px;
-}
-
 .series-number-overlay {
   position: absolute;
   top: 8px;
@@ -231,7 +228,15 @@
   background-color: #8b5cf6;
 }
 
-::ng-deep p-progressbar {
+::ng-deep .progress-incomplete-kobo .p-progressbar-value {
+  background-color: #bf0000;
+}
+
+::ng-deep .progress-complete-kobo .p-progressbar-value {
+  background-color: #f65c9c;
+}
+
+::ng-deep .cover-progress-bar {
   --p-progressbar-border-radius: 0 !important;
 }
 
diff --git a/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.ts b/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.ts
index a3ba42b2..bcc39ee6 100644
--- a/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.ts
+++ b/booklore-ui/src/app/features/book/components/book-browser/book-card/book-card.component.ts
@@ -110,6 +110,13 @@ export class BookCardComponent implements OnInit, OnChanges, OnDestroy {
     return null;
   }
 
+  get koboProgressPercentage(): number | null {
+    if (this.book.koboProgress?.percentage != null) {
+      return this.book.koboProgress.percentage;
+    }
+    return null;
+  }
+
   get displayTitle(): string | undefined {
     return (this.isSeriesCollapsed && this.book.metadata?.seriesName) ? this.book.metadata?.seriesName : this.book.metadata?.title;
   }
diff --git a/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.html b/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.html
index 149ad793..efa1c635 100644
--- a/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.html
+++ b/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.html
@@ -19,32 +19,46 @@
             </div>
           }
 
-          @let progress = getProgressPercent(book);
-          @if (progress !== null) {
-            <p-progressBar
-              [value]="progress"
-              [showValue]="false"
-              class="cover-progress-bar"
-              [ngClass]="{
-                'progress-complete': progress === 100,
-                'progress-incomplete': progress < 100
-              }"
-              [style]="{ height: '6px' }"
-            ></p-progressBar>
-          }
+          <div 
+            class="cover-progress-bar-container"
+            [style.--progress-count]="getProgressCount(book)">
+            @let progress = getProgressPercent(book);
+            @if (progress !== null) {
+              <p-progressBar
+                [value]="progress"
+                [showValue]="false"
+                class="cover-progress-bar"
+                [ngClass]="{
+                  'progress-complete': progress === 100,
+                  'progress-incomplete': progress < 100
+                }"
+              ></p-progressBar>
+            }
 
-          @if (getKoProgressPercent(book) !== null) {
-            <p-progressBar
-              [value]="getKoProgressPercent(book)"
-              [showValue]="false"
-              [ngClass]="[
-                getProgressPercent(book) == null ? 'cover-progress-bar-ko-only' : 'cover-progress-bar-ko-both',
-                getKoProgressPercent(book) === 100 ? 'progress-complete-ko' : 'progress-incomplete-ko'
-              ]"
-              [style]="{ height: '6px' }"
-            >
-            </p-progressBar>
-          }
+            @if (getKoProgressPercent(book) !== null) {
+              <p-progressBar
+                [value]="getKoProgressPercent(book)"
+                [showValue]="false"
+                class="cover-progress-bar"
+                [ngClass]="[
+                  getKoProgressPercent(book) === 100 ? 'progress-complete-ko' : 'progress-incomplete-ko'
+                ]"
+              >
+              </p-progressBar>
+            }
+
+            @if (getKoboProgressPercent(book) !== null) {
+              <p-progressBar
+                [value]="getKoboProgressPercent(book)"
+                [showValue]="false"
+                class="cover-progress-bar"
+                [ngClass]="[
+                  getKoboProgressPercent(book) === 100 ? 'progress-complete-kobo' : 'progress-incomplete-kobo'
+                ]"
+              >
+              </p-progressBar>
+            }
+          </div>
         </div>
 
         @if (navigationState$ | async) {
diff --git a/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.scss b/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.scss
index 0bce931e..1f1db605 100644
--- a/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.scss
+++ b/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.scss
@@ -63,28 +63,28 @@
   z-index: 2;
 }
 
-.cover-progress-bar,
-.cover-progress-bar-ko-both,
-.cover-progress-bar-ko-only {
+.cover-progress-bar-container {
   position: absolute;
+  bottom: 0;
   left: 0;
   right: 0;
   z-index: 2;
-  pointer-events: none;
+  border-radius: 9999px;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  height: calc(var(--progress-count, 0) * 6px);
 }
 
 .cover-progress-bar {
-  bottom: 0;
+  z-index: 2;
+  pointer-events: none;
+  height: 6px;
+  flex-shrink: 0;
 }
 
-.cover-progress-bar-ko-both {
-  bottom: 0;
-  height: 12px;
-  z-index: 3;
-}
-
-.cover-progress-bar-ko-only {
-  bottom: 0;
+::ng-deep .cover-progress-bar {
+  --p-progressbar-border-radius: 0 !important;
 }
 
 ::ng-deep .progress-incomplete .p-progressbar-value {
@@ -96,11 +96,19 @@
 }
 
 ::ng-deep .progress-incomplete-ko .p-progressbar-value {
-  background-color: var(--primary-text-color);
+  background-color: #fbbf24;
 }
 
 ::ng-deep .progress-complete-ko .p-progressbar-value {
-  background-color: var(--primary-hover-color);
+  background-color: #8b5cf6;
+}
+
+::ng-deep .progress-incomplete-kobo .p-progressbar-value {
+  background-color: #bf0000;
+}
+
+::ng-deep .progress-complete-kobo .p-progressbar-value {
+  background-color: #f65c9c;
 }
 
 .info-section {
diff --git a/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.ts b/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.ts
index 462779b5..8a379004 100644
--- a/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.ts
+++ b/booklore-ui/src/app/features/metadata/component/book-metadata-center/metadata-viewer/metadata-viewer.component.ts
@@ -659,6 +659,21 @@ export class MetadataViewerComponent implements OnInit, OnChanges {
     return null;
   }
 
+  getKoboProgressPercent(book: Book): number | null {
+    if (book.koboProgress?.percentage != null) {
+      return book.koboProgress.percentage;
+    }
+    return null;
+  }
+
+  getProgressCount(book: Book): number {
+    let count = 0;
+    if (this.getProgressPercent(book) !== null) count++;
+    if (this.getKoProgressPercent(book) !== null) count++;
+    if (this.getKoboProgressPercent(book) !== null) count++;
+    return count;
+  }
+
   getFileExtension(filePath?: string): string | null {
     if (!filePath) return null;
     const parts = filePath.split('.');
diff --git a/booklore-ui/src/app/features/stats/service/reading-dna-chart.service.ts b/booklore-ui/src/app/features/stats/service/reading-dna-chart.service.ts
index 3bb51bf4..8246de8b 100644
--- a/booklore-ui/src/app/features/stats/service/reading-dna-chart.service.ts
+++ b/booklore-ui/src/app/features/stats/service/reading-dna-chart.service.ts
@@ -390,7 +390,8 @@ export class ReadingDNAChartService implements OnDestroy {
         book.epubProgress?.percentage || 0,
         book.pdfProgress?.percentage || 0,
         book.cbxProgress?.percentage || 0,
-        book.koreaderProgress?.percentage || 0
+        book.koreaderProgress?.percentage || 0,
+        book.koboProgress?.percentage || 0
       );
       return progress > 50;
     });
diff --git a/booklore-ui/src/app/features/stats/service/reading-habits-chart.service.ts b/booklore-ui/src/app/features/stats/service/reading-habits-chart.service.ts
index fcc98080..9b3a60e1 100644
--- a/booklore-ui/src/app/features/stats/service/reading-habits-chart.service.ts
+++ b/booklore-ui/src/app/features/stats/service/reading-habits-chart.service.ts
@@ -309,7 +309,8 @@ export class ReadingHabitsChartService implements OnDestroy {
         book.epubProgress?.percentage || 0,
         book.pdfProgress?.percentage || 0,
         book.cbxProgress?.percentage || 0,
-        book.koreaderProgress?.percentage || 0
+        book.koreaderProgress?.percentage || 0,
+        book.koboProgress?.percentage || 0
       );
       return progress > 0 && progress < 100;
     });
diff --git a/booklore-ui/src/app/features/stats/service/reading-progress-chart-service.ts b/booklore-ui/src/app/features/stats/service/reading-progress-chart-service.ts
index 07e0ad9b..90794933 100644
--- a/booklore-ui/src/app/features/stats/service/reading-progress-chart-service.ts
+++ b/booklore-ui/src/app/features/stats/service/reading-progress-chart-service.ts
@@ -228,6 +228,7 @@ export class ReadingProgressChartService implements OnDestroy {
     if (book.epubProgress?.percentage) return book.epubProgress.percentage;
     if (book.cbxProgress?.percentage) return book.cbxProgress.percentage;
     if (book.koreaderProgress?.percentage) return book.koreaderProgress.percentage;
+    if (book.koboProgress?.percentage) return book.koboProgress.percentage;
     return 0;
   }
 
diff --git a/booklore-ui/src/app/features/stats/service/reading-velocity-chart.service.ts b/booklore-ui/src/app/features/stats/service/reading-velocity-chart.service.ts
index 09f842a7..250c93f2 100644
--- a/booklore-ui/src/app/features/stats/service/reading-velocity-chart.service.ts
+++ b/booklore-ui/src/app/features/stats/service/reading-velocity-chart.service.ts
@@ -283,8 +283,9 @@ export class ReadingVelocityChartService implements OnDestroy {
     const pdfProgress = book.pdfProgress?.percentage || 0;
     const cbxProgress = book.cbxProgress?.percentage || 0;
     const koreaderProgress = book.koreaderProgress?.percentage || 0;
+    const koboProgress = book.koboProgress?.percentage || 0;
 
-    return Math.max(epubProgress, pdfProgress, cbxProgress, koreaderProgress) / 100;
+    return Math.max(epubProgress, pdfProgress, cbxProgress, koreaderProgress, koboProgress) / 100;
   }
 
   private calculateAverageRating(books: Book[]): number {