diff --git a/.claude/worktrees/agent-a1140340 b/.claude/worktrees/agent-a1140340
new file mode 160000
index 0000000..692e6f9
--- /dev/null
+++ b/.claude/worktrees/agent-a1140340
@@ -0,0 +1 @@
+Subproject commit 692e6f937856ace638d9773c17f7447ca439d881
diff --git a/.claude/worktrees/agent-a88ce9b7 b/.claude/worktrees/agent-a88ce9b7
new file mode 160000
index 0000000..a60db21
--- /dev/null
+++ b/.claude/worktrees/agent-a88ce9b7
@@ -0,0 +1 @@
+Subproject commit a60db217827213e019a15bca7c0ab05a5b183275
diff --git a/.claude/worktrees/agent-aa5d905d b/.claude/worktrees/agent-aa5d905d
new file mode 160000
index 0000000..9bd8701
--- /dev/null
+++ b/.claude/worktrees/agent-aa5d905d
@@ -0,0 +1 @@
+Subproject commit 9bd8701a1d38e3fdb1823bb936b260d7ec0fe165
diff --git a/backend/static/js/app.js b/backend/static/js/app.js
index 37b0a51..9213d44 100644
--- a/backend/static/js/app.js
+++ b/backend/static/js/app.js
@@ -3,7 +3,7 @@
    Router, State-Management, Navigation, Initialisierung.
    ============================================================ */
 
-const APP_VER = '87'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
+const APP_VER = '88'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
 
 const App = (() => {
 
diff --git a/backend/static/js/pages/health.js b/backend/static/js/pages/health.js
index 05d345d..71275c9 100644
--- a/backend/static/js/pages/health.js
+++ b/backend/static/js/pages/health.js
@@ -869,7 +869,7 @@ window.Page_health = (() => {
                  placeholder="${_formPlaceholder(t)}">
         </div>` : ''}
       <div class="form-group">
-        <label class="form-label">Start *</label>
+        <label class="form-label">${t === 'laeufigkeit' ? 'Beginn der Läufigkeit *' : 'Start *'}</label>
         <input class="form-control" type="date" name="datum"
                value="${entry?.datum || today}" required>
       </div>
@@ -1130,18 +1130,37 @@ window.Page_health = (() => {
       `;
       case 'laeufigkeit': {
         const prevCycles = (_data['laeufigkeit'] || []).filter(e => e !== entry && e?.datum);
+        const sorted = [...prevCycles].sort((a, b) => a.datum.localeCompare(b.datum));
+        const lastCycle = sorted[sorted.length - 1];
+
+        // Abstand zur letzten Läufigkeit (in Tagen)
+        let daysSinceLast = null;
+        if (lastCycle) {
+          daysSinceLast = Math.round((new Date() - new Date(lastCycle.datum)) / 86400000);
+        }
+
+        // Durchschnittlicher Zyklus aus ≥2 Einträgen, sonst gemessener Abstand
         let avgInterval = 0;
-        if (prevCycles.length >= 2) {
-          const sorted = [...prevCycles].sort((a, b) => a.datum.localeCompare(b.datum));
+        if (sorted.length >= 2) {
           const intervals = [];
           for (let i = 1; i < sorted.length; i++) {
             intervals.push(Math.round((new Date(sorted[i].datum) - new Date(sorted[i-1].datum)) / 86400000));
           }
           avgInterval = Math.round(intervals.reduce((a, b) => a + b, 0) / intervals.length);
+        } else if (daysSinceLast !== null) {
+          avgInterval = daysSinceLast; // erster gemessener Abstand als Vorschlag
         }
         const defaultInterval = avgInterval || (entry?.intervall_tage) || 180;
-        // Auto-berechne nächstes Datum aus Startdatum + Interval
+
+        const lastInfo = lastCycle ? `
+          <div style="font-size:var(--text-xs);color:var(--c-text-secondary);
+                      background:var(--c-surface-2);border-radius:var(--radius-md);
+                      padding:var(--space-2) var(--space-3);margin-bottom:var(--space-3)">
+            Letzte Läufigkeit: <strong>${UI.time.format(lastCycle.datum + 'T00:00:00')}</strong>
+            — vor <strong>${daysSinceLast} Tagen</strong>
+          </div>` : '';
         return `
+          ${lastInfo}
           <div style="display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3)">
             <div class="form-group">
               <label class="form-label">Dauer (Tage)</label>