diff --git a/docs/android-questionnaire-api.md b/docs/android-questionnaire-api.md
index eabcb1b..fb05756 100644
--- a/docs/android-questionnaire-api.md
+++ b/docs/android-questionnaire-api.md
@@ -232,6 +232,7 @@ Question fields:
 - `options[].nextQuestionId`: optional conditional navigation target.
 - `pointsMap`: optional map from answer option key to point value.
 - `textKey`, `textKey1`, `textKey2`, `hint`, `hint1`, `hint2`, `symptoms`, `range`, `constraints`, `precision`, `dateRange`, `minSelection`: optional layout-specific config fields.
+- `noteBeforeKey`, `noteAfterKey`: optional translation keys for text shown above / below the question title (editor “note before/after”). Present only when notes are configured; resolve via the questionnaire `translations` map.
   - `dateRange` (date_spinner): `"past"` (default) or `"future"` — which years/dates the app offers.
 
 Important ID rule: the fetch response returns short question IDs such as `q1`. The server resolves these back to full database IDs during upload, so the Android app should upload the same short IDs it received.
diff --git a/handlers/questions.php b/handlers/questions.php
index 28073ea..5ada392 100644
--- a/handlers/questions.php
+++ b/handlers/questions.php
@@ -197,10 +197,17 @@ case 'PUT':
         $oldKey = qdb_question_key($oldCfg, $row['defaultText']);
         $oldSymptoms = json_encode($oldCfg['symptoms'] ?? [], JSON_UNESCAPED_UNICODE);
         $newSymptoms = json_encode($config['symptoms'] ?? [], JSON_UNESCAPED_UNICODE);
+        // Notes live in configJson and are exported as noteBeforeKey/noteAfterKey + translations.
+        // App sync skips detail re-download when structureRevision is unchanged, so note-only
+        // (and other app-visible config) edits must bump the revision.
+        $oldNotes = trim((string)($oldCfg['noteBefore'] ?? '')) . "\0" . trim((string)($oldCfg['noteAfter'] ?? ''));
+        $newNotes = trim((string)($config['noteBefore'] ?? '')) . "\0" . trim((string)($config['noteAfter'] ?? ''));
         $structuralChange = ($type !== (string)$row['type'])
             || ($req !== (int)$row['isRequired'])
             || ($questionKey !== $oldKey)
-            || ($newSymptoms !== $oldSymptoms);
+            || ($newSymptoms !== $oldSymptoms)
+            || ($oldNotes !== $newNotes)
+            || (json_encode($config, JSON_UNESCAPED_UNICODE) !== json_encode($oldCfg, JSON_UNESCAPED_UNICODE));
         if ((int)($row['retiredAt'] ?? 0) > 0) {
             qdb_discard($tmpDb, $lockFp);
             json_error('INVALID_FIELD', 'Cannot edit a retired question', 400);
diff --git a/tests/Integration/QuestionnaireEditingTest.php b/tests/Integration/QuestionnaireEditingTest.php
index 238df1e..fb6c3bf 100644
--- a/tests/Integration/QuestionnaireEditingTest.php
+++ b/tests/Integration/QuestionnaireEditingTest.php
@@ -54,4 +54,58 @@ final class QuestionnaireEditingTest extends QdbTestCase
         $res = $this->api()->withToken($token, 'GET', 'answer_options');
         $this->assertApiError($res, 'MISSING_PARAM', 400);
     }
+
+    public function testSavingNoteBeforeBumpsStructureRevisionAndExportsKey(): void
+    {
+        $adminToken = $this->api()->loginWebAndGetToken(
+            DatabaseSeeder::ADMIN_USERNAME,
+            DatabaseSeeder::PASSWORD
+        )['token'];
+        $coachLogin = $this->api()->loginMobileAndGetToken(
+            DatabaseSeeder::COACH_USERNAME,
+            DatabaseSeeder::PASSWORD
+        );
+        $f = $this->fixture();
+
+        $before = $this->api()->withMobileToken($coachLogin['token'], 'GET', 'app_questionnaires', null, [
+            'id' => $f->questionnaireId,
+        ]);
+        $this->assertApiOk($before);
+        $revBefore = (int)($before['data']['structureRevision'] ?? 1);
+
+        $put = $this->api()->withToken($adminToken, 'PUT', 'questions', [
+            'questionID'  => $f->questionId,
+            'questionKey' => 'consent_q',
+            'defaultText' => 'Consent?',
+            'type'        => 'single_choice_question',
+            'isRequired'  => 1,
+            'configJson'  => json_encode(['questionKey' => 'consent_q'], JSON_UNESCAPED_UNICODE),
+            'noteBefore'  => 'Bitte dem Klienten deutlich machen: Ohne Einwilligung keine Teilnahme.',
+            'noteAfter'   => '',
+        ]);
+        $this->assertApiOk($put);
+        $revAfter = (int)($put['data']['structureRevision'] ?? 0);
+        $this->assertGreaterThan($revBefore, $revAfter, 'note-only edit must bump structureRevision for app sync');
+
+        $detail = $this->api()->withMobileToken($coachLogin['token'], 'GET', 'app_questionnaires', null, [
+            'id' => $f->questionnaireId,
+        ]);
+        $this->assertApiOk($detail);
+        $questions = $detail['data']['questions'] ?? [];
+        $this->assertIsArray($questions);
+        $matched = null;
+        foreach ($questions as $q) {
+            if (($q['question'] ?? '') === 'consent_q' || ($q['id'] ?? '') === 'q1') {
+                $matched = $q;
+                break;
+            }
+        }
+        $this->assertNotNull($matched, 'expected consent question in app export');
+        $this->assertSame('consent_q_note_before', $matched['noteBeforeKey'] ?? null);
+        $de = $detail['data']['translations']['de'] ?? [];
+        $this->assertSame(
+            'Bitte dem Klienten deutlich machen: Ohne Einwilligung keine Teilnahme.',
+            $de['consent_q_note_before'] ?? null
+        );
+    }
 }