diff --git a/app.json b/app.json
index 22115fb..d7665d7 100644
--- a/app.json
+++ b/app.json
@@ -10,7 +10,7 @@
     "ios": {
       "supportsTablet": true,
       "bundleIdentifier": "com.beenvoice.app",
-      "buildNumber": "27",
+      "buildNumber": "28",
       "icon": "./assets/beenvoice.icon",
       "infoPlist": {
         "ITSAppUsesNonExemptEncryption": false,
diff --git a/app/(app)/more/settings.tsx b/app/(app)/more/settings.tsx
index 9fa3c39..297bab1 100644
--- a/app/(app)/more/settings.tsx
+++ b/app/(app)/more/settings.tsx
@@ -2,7 +2,15 @@ import { useState } from "react";
 import Constants from "expo-constants";
 import { Ionicons } from "@expo/vector-icons";
 import { router } from "expo-router";
-import { Alert, Platform, Pressable, StyleSheet, Switch, Text, View } from "react-native";
+import {
+  Alert,
+  Platform,
+  Pressable,
+  StyleSheet,
+  Switch,
+  Text,
+  View,
+} from "react-native";
 import { TabPage } from "@/components/TabPage";
 import { TabScrollView } from "@/components/TabScrollView";
 
@@ -20,7 +28,10 @@ import { useAppLock } from "@/contexts/AppLockContext";
 import { useAuthClient, useSession } from "@/contexts/AuthContext";
 import { type ColorMode, useAppTheme } from "@/contexts/ThemeContext";
 import { startAdditionalAccountSignIn } from "@/lib/add-account";
-import { confirmRemoveAccount, finishAccountRemoval } from "@/lib/account-actions";
+import {
+  confirmRemoveAccount,
+  finishAccountRemoval,
+} from "@/lib/account-actions";
 import { performAuthReset } from "@/lib/auth-session";
 import { api } from "@/lib/trpc";
 
@@ -61,6 +72,7 @@ export default function SettingsScreen() {
     lock,
   } = useAppLock();
   const profileQuery = api.settings.getProfile.useQuery();
+  const deleteAccountMutation = api.settings.deleteAccount.useMutation();
 
   const [pinPrompt, setPinPrompt] = useState<
     | { mode: "create" }
@@ -110,10 +122,54 @@ export default function SettingsScreen() {
   function confirmSignOut() {
     Alert.alert("Sign out", "Sign out of this account on this device?", [
       { text: "Cancel", style: "cancel" },
-      { text: "Sign out", style: "destructive", onPress: () => void handleSignOut() },
+      {
+        text: "Sign out",
+        style: "destructive",
+        onPress: () => void handleSignOut(),
+      },
     ]);
   }
 
+  async function handleDeleteAccount() {
+    if (!activeAccountId) return;
+
+    try {
+      await deleteAccountMutation.mutateAsync({
+        confirmText: "DELETE MY ACCOUNT",
+      });
+      const result = await removeAccount(activeAccountId);
+      await finishAccountRemoval({
+        result,
+        authClient,
+        clearActiveAccount,
+        activeAccountId,
+      });
+      if (result.remainingCount > 0) {
+        router.replace("/(auth)/select-account");
+      }
+    } catch (error) {
+      Alert.alert(
+        "Could not delete account",
+        error instanceof Error ? error.message : "Please try again.",
+      );
+    }
+  }
+
+  function confirmDeleteAccount() {
+    Alert.alert(
+      "Permanently delete account?",
+      "This deletes your account, invoices, clients, businesses, expenses, time entries, uploaded files, and sign-in data. This cannot be undone.",
+      [
+        { text: "Cancel", style: "cancel" },
+        {
+          text: "Delete Account",
+          style: "destructive",
+          onPress: () => void handleDeleteAccount(),
+        },
+      ],
+    );
+  }
+
   function confirmInstanceChange() {
     Alert.alert(
       "Server updated",
@@ -145,7 +201,10 @@ export default function SettingsScreen() {
         await enableLock(pin);
         setPinPrompt(null);
       } catch (err) {
-        Alert.alert("Could not enable lock", err instanceof Error ? err.message : "Try again");
+        Alert.alert(
+          "Could not enable lock",
+          err instanceof Error ? err.message : "Try again",
+        );
       }
       return;
     }
@@ -169,7 +228,10 @@ export default function SettingsScreen() {
     if (pinPrompt?.mode === "change-next") {
       const success = await changePin(pendingPin, pin);
       if (!success) {
-        Alert.alert("Could not change PIN", "Check your current PIN and try again.");
+        Alert.alert(
+          "Could not change PIN",
+          "Check your current PIN and try again.",
+        );
         return;
       }
       setPendingPin("");
@@ -207,9 +269,13 @@ export default function SettingsScreen() {
                 : "Enter your current PIN."
           }
           confirmLabel={
-            pinPrompt?.mode === "create" || pinPrompt?.mode === "change-next" ? "Save" : "Continue"
+            pinPrompt?.mode === "create" || pinPrompt?.mode === "change-next"
+              ? "Save"
+              : "Continue"
+          }
+          requireConfirmation={
+            pinPrompt?.mode === "create" || pinPrompt?.mode === "change-next"
           }
-          requireConfirmation={pinPrompt?.mode === "create" || pinPrompt?.mode === "change-next"}
           onCancel={() => {
             setPendingPin("");
             setPinPrompt(null);
@@ -218,7 +284,10 @@ export default function SettingsScreen() {
         />
         <TabScrollView
           header={
-            <PageHeader title="Settings" subtitle="Account and app preferences" />
+            <PageHeader
+              title="Settings"
+              subtitle="Account and app preferences"
+            />
           }
           keyboardShouldPersistTaps="handled"
         >
@@ -253,21 +322,43 @@ export default function SettingsScreen() {
                   <Pressable
                     accessibilityRole="button"
                     onPress={() => void switchAccount(account.id)}
-                    style={({ pressed }) => [styles.accountMain, pressed && styles.pressed]}
+                    style={({ pressed }) => [
+                      styles.accountMain,
+                      pressed && styles.pressed,
+                    ]}
                   >
                     <View style={styles.accountMeta}>
-                      <Text style={[styles.accountName, { color: colors.foreground }]}>
+                      <Text
+                        style={[
+                          styles.accountName,
+                          { color: colors.foreground },
+                        ]}
+                      >
                         {account.name || account.email}
                       </Text>
-                      <Text style={[styles.accountSub, { color: colors.mutedForeground }]}>
+                      <Text
+                        style={[
+                          styles.accountSub,
+                          { color: colors.mutedForeground },
+                        ]}
+                      >
                         {account.email}
                       </Text>
-                      <Text style={[styles.accountSub, { color: colors.mutedForeground }]}>
+                      <Text
+                        style={[
+                          styles.accountSub,
+                          { color: colors.mutedForeground },
+                        ]}
+                      >
                         {account.instanceUrl.replace(/^https?:\/\//, "")}
                       </Text>
                     </View>
                     {isActive ? (
-                      <Text style={[styles.activeBadge, { color: colors.primary }]}>Active</Text>
+                      <Text
+                        style={[styles.activeBadge, { color: colors.primary }]}
+                      >
+                        Active
+                      </Text>
                     ) : null}
                   </Pressable>
                   <Pressable
@@ -275,11 +366,21 @@ export default function SettingsScreen() {
                     accessibilityLabel={`Remove ${account.name || account.email}`}
                     hitSlop={8}
                     onPress={() =>
-                      handleRemoveAccount(account.id, account.name || account.email)
+                      handleRemoveAccount(
+                        account.id,
+                        account.name || account.email,
+                      )
                     }
-                    style={({ pressed }) => [styles.removeButton, pressed && styles.pressed]}
+                    style={({ pressed }) => [
+                      styles.removeButton,
+                      pressed && styles.pressed,
+                    ]}
                   >
-                    <Ionicons name="trash-outline" size={18} color={colors.destructive} />
+                    <Ionicons
+                      name="trash-outline"
+                      size={18}
+                      color={colors.destructive}
+                    />
                   </Pressable>
                 </View>
               );
@@ -293,10 +394,13 @@ export default function SettingsScreen() {
             <Button
               title="Add another account"
               variant="secondary"
-              onPress={() => void startAdditionalAccountSignIn(clearActiveAccount)}
+              onPress={() =>
+                void startAdditionalAccountSignIn(clearActiveAccount)
+              }
             />
             <Text style={[styles.meta, { color: colors.mutedForeground }]}>
-              Tap an account to switch. Refresh updates names from saved sign-in data.
+              Tap an account to switch. Refresh updates names from saved sign-in
+              data.
             </Text>
           </Card>
 
@@ -309,7 +413,11 @@ export default function SettingsScreen() {
           <Card title="Security">
             <View style={styles.settingRow}>
               <View style={styles.settingCopy}>
-                <Text style={[styles.settingTitle, { color: colors.foreground }]}>App lock</Text>
+                <Text
+                  style={[styles.settingTitle, { color: colors.foreground }]}
+                >
+                  App lock
+                </Text>
                 <Text style={[styles.meta, { color: colors.mutedForeground }]}>
                   Require a PIN when reopening the app
                 </Text>
@@ -324,10 +432,14 @@ export default function SettingsScreen() {
             {lockEnabled && biometricAvailable ? (
               <View style={styles.settingRow}>
                 <View style={styles.settingCopy}>
-                  <Text style={[styles.settingTitle, { color: colors.foreground }]}>
+                  <Text
+                    style={[styles.settingTitle, { color: colors.foreground }]}
+                  >
                     {biometricLabel}
                   </Text>
-                  <Text style={[styles.meta, { color: colors.mutedForeground }]}>
+                  <Text
+                    style={[styles.meta, { color: colors.mutedForeground }]}
+                  >
                     Unlock with {biometricLabel.toLowerCase()} when available
                   </Text>
                 </View>
@@ -341,7 +453,11 @@ export default function SettingsScreen() {
 
             {lockEnabled ? (
               <>
-                <Button title="Change PIN" variant="secondary" onPress={handleChangePin} />
+                <Button
+                  title="Change PIN"
+                  variant="secondary"
+                  onPress={handleChangePin}
+                />
                 <Button title="Lock now" variant="secondary" onPress={lock} />
               </>
             ) : null}
@@ -360,14 +476,20 @@ export default function SettingsScreen() {
                       styles.themeChip,
                       {
                         borderColor: selected ? colors.primary : colors.border,
-                        backgroundColor: selected ? colors.muted : "transparent",
+                        backgroundColor: selected
+                          ? colors.muted
+                          : "transparent",
                       },
                     ]}
                   >
                     <Text
                       style={[
                         styles.themeChipLabel,
-                        { color: selected ? colors.foreground : colors.mutedForeground },
+                        {
+                          color: selected
+                            ? colors.foreground
+                            : colors.mutedForeground,
+                        },
                       ]}
                     >
                       {option.label}
@@ -380,24 +502,52 @@ export default function SettingsScreen() {
 
           <Card title="App">
             <View style={styles.appRow}>
-              <Text style={[styles.meta, { color: colors.mutedForeground }]}>Version</Text>
-              <Text style={[styles.appValue, { color: colors.foreground }]}>{appVersion}</Text>
+              <Text style={[styles.meta, { color: colors.mutedForeground }]}>
+                Version
+              </Text>
+              <Text style={[styles.appValue, { color: colors.foreground }]}>
+                {appVersion}
+              </Text>
             </View>
             <View style={styles.appRow}>
-              <Text style={[styles.meta, { color: colors.mutedForeground }]}>Platform</Text>
+              <Text style={[styles.meta, { color: colors.mutedForeground }]}>
+                Platform
+              </Text>
               <Text style={[styles.appValue, { color: colors.foreground }]}>
                 {Constants.platform?.ios ? "iOS" : "Other"}
               </Text>
             </View>
           </Card>
 
+          <Card title="Delete account">
+            <Text style={[styles.meta, { color: colors.mutedForeground }]}>
+              Permanently delete this account and all of its data from the
+              server. This cannot be undone.
+            </Text>
+            <Button
+              title={
+                deleteAccountMutation.isPending
+                  ? "Deleting account…"
+                  : "Delete Account"
+              }
+              variant="danger"
+              loading={deleteAccountMutation.isPending}
+              disabled={deleteAccountMutation.isPending}
+              onPress={confirmDeleteAccount}
+            />
+          </Card>
+
           <Pressable
             accessibilityRole="button"
             accessibilityState={{ expanded: showAdvanced }}
             onPress={() => setShowAdvanced((open) => !open)}
             style={styles.advancedToggle}
           >
-            <Text style={[styles.advancedLabel, { color: colors.mutedForeground }]}>Advanced</Text>
+            <Text
+              style={[styles.advancedLabel, { color: colors.mutedForeground }]}
+            >
+              Advanced
+            </Text>
             <Ionicons
               name={showAdvanced ? "chevron-up" : "chevron-down"}
               size={16}
@@ -408,14 +558,23 @@ export default function SettingsScreen() {
           {showAdvanced ? (
             <Card title="Server instance">
               <InstanceUrlField onSaved={confirmInstanceChange} />
-              <Text style={[styles.currentServer, { color: colors.mutedForeground }]}>
+              <Text
+                style={[
+                  styles.currentServer,
+                  { color: colors.mutedForeground },
+                ]}
+              >
                 Connected to {activeAccount?.instanceUrl ?? apiUrl}
               </Text>
             </Card>
           ) : null}
 
           <View style={styles.actions}>
-            <Button title="Sign Out" variant="danger" onPress={confirmSignOut} />
+            <Button
+              title="Sign Out"
+              variant="danger"
+              onPress={confirmSignOut}
+            />
           </View>
         </TabScrollView>
       </TabPage>
diff --git a/docs/APP_STORE_CONNECT.md b/docs/APP_STORE_CONNECT.md
index 31724ac..02e2053 100644
--- a/docs/APP_STORE_CONNECT.md
+++ b/docs/APP_STORE_CONNECT.md
@@ -139,6 +139,13 @@ WHAT TO TEST
 • Invoices — list includes draft, sent, and paid examples.
 • Settings — profile, theme, optional app lock (PIN / Face ID).
 
+ACCOUNT DELETION
+Settings → Delete account offers permanent in-app account deletion without contacting support.
+After a destructive confirmation, the server removes the account record, sessions, access keys,
+invoices, clients, businesses, recurring invoices, expenses and receipts, time entries, templates,
+audit records, and uploaded files. The app then removes the local account and returns to sign-in.
+The supplied demo account is shared, so please test deletion last if deletion verification is required.
+
 APP LOCK
 Optional. Enable in Settings → App Lock. Face ID uses on-device biometrics only; no biometric data is sent to our servers.
 
@@ -276,6 +283,7 @@ Prerequisites:
 - [ ] TestFlight smoke test on device (login, timer, invoices, app lock)
 - [ ] Live Activity tested on physical iPhone
 - [ ] App Privacy answers match actual data flows
+- [ ] In-app account deletion succeeds from Settings and returns to sign-in
 - [ ] Screenshots uploaded for required device sizes
 - [ ] Review notes include demo credentials and server URL
 - [ ] Export compliance answered