diff --git a/apps/rebreak-native/app/devices.tsx b/apps/rebreak-native/app/devices.tsx
index 45c3720..310cec4 100644
--- a/apps/rebreak-native/app/devices.tsx
+++ b/apps/rebreak-native/app/devices.tsx
@@ -7,6 +7,7 @@ import {
   TouchableOpacity,
   View,
 } from 'react-native';
+import { Button } from '../components/Button';
 import { useEffect, useState } from 'react';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import { Ionicons } from '@expo/vector-icons';
@@ -540,24 +541,12 @@ export default function DevicesScreen() {
         {/* CTA or Upgrade */}
         {isLegend ? (
           atDeviceLimit ? (
-            <TouchableOpacity
-              activeOpacity={1}
-              style={{
-                backgroundColor: colors.surfaceElevated,
-                borderRadius: 14,
-                paddingVertical: 12,
-                alignItems: 'center',
-                flexDirection: 'row',
-                justifyContent: 'center',
-                gap: 8,
-                opacity: 0.5,
-              }}
-            >
-              <Ionicons name="add-circle-outline" size={20} color={colors.textMuted} />
-              <Text style={{ fontSize: 16, color: colors.textMuted, fontFamily: 'Nunito_700Bold' }}>
-                {t('devices.add_device')}
-              </Text>
-            </TouchableOpacity>
+            <Button
+              title={t('devices.add_device')}
+              icon="add-circle-outline"
+              disabled
+              style={{ backgroundColor: colors.surfaceElevated }}
+            />
           ) : (
           <MenuView
             title={t('devices.add_device')}
@@ -571,23 +560,10 @@ export default function DevicesScreen() {
             }}
             shouldOpenOnLongPress={false}
           >
-            <TouchableOpacity
-              activeOpacity={0.7}
-              style={{
-                backgroundColor: colors.brandOrange,
-                borderRadius: 14,
-                paddingVertical: 12,
-                alignItems: 'center',
-                flexDirection: 'row',
-                justifyContent: 'center',
-                gap: 8,
-              }}
-            >
-              <Ionicons name="add-circle-outline" size={20} color="#fff" />
-              <Text style={{ fontSize: 16, color: '#fff', fontFamily: 'Nunito_700Bold' }}>
-                {t('devices.add_device')}
-              </Text>
-            </TouchableOpacity>
+            <Button
+              title={t('devices.add_device')}
+              icon="add-circle-outline"
+            />
           </MenuView>
           )
         ) : (
@@ -609,19 +585,7 @@ export default function DevicesScreen() {
                 {t('devices.subtitle_legend')}
               </Text>
             </View>
-            <TouchableOpacity
-              activeOpacity={0.7}
-              style={{
-                backgroundColor: colors.brandOrange,
-                borderRadius: 12,
-                paddingVertical: 12,
-                alignItems: 'center',
-              }}
-            >
-              <Text style={{ fontSize: 15, color: '#fff', fontFamily: 'Nunito_700Bold' }}>
-                {t('devices.upgrade_cta')}
-              </Text>
-            </TouchableOpacity>
+            <Button title={t('devices.upgrade_cta')} />
           </View>
         )}
 
diff --git a/apps/rebreak-native/app/settings.tsx b/apps/rebreak-native/app/settings.tsx
index 67e0158..f6fa9c7 100644
--- a/apps/rebreak-native/app/settings.tsx
+++ b/apps/rebreak-native/app/settings.tsx
@@ -18,6 +18,7 @@ import { TrueSheet } from '@lodev09/react-native-true-sheet';
 import { useTranslation } from 'react-i18next';
 import { LanguageIcon } from '../components/icons/LanguageIcon';
 import { useColors } from '../lib/theme';
+import { Button } from '../components/Button';
 import { useAuthStore } from '../stores/auth';
 import { useAppLockStore } from '../stores/appLock';
 import { useThemeStore, type ThemeMode } from '../stores/theme';
@@ -105,32 +106,16 @@ function SubscriptionSheet({ plan, colors, t }: SubscriptionSheetProps) {
         {t('settings.subscription_sheet_body')}
       </Text>
 
-      <TouchableOpacity
-        onPress={() => {
-          // TODO: für iOS-Submission ggf. zu nicht-tippbarem Text degradieren
-          // (Apple Guideline 3.1.1: externe Abo-Links können Review-Ablehnung triggern,
-          // wenn sie als Kauf-Umgehung gewertet werden. Standalone-URL ohne Preis-Info
-          // sollte ok sein, ist aber ungeprüft — bei Submission erneut prüfen.)
-          Linking.openURL('https://rebreak.org/account');
-        }}
-        activeOpacity={0.8}
-        style={{
-          backgroundColor: accentColor,
-          borderRadius: 14,
-          paddingVertical: 14,
-          alignItems: 'center',
-        }}
-      >
-        <Text
-          style={{
-            fontSize: 16,
-            color: '#ffffff',
-            fontFamily: 'Nunito_700Bold',
-          }}
-        >
-          {t('settings.subscription_sheet_cta')}
-        </Text>
-      </TouchableOpacity>
+      {/* TODO: für iOS-Submission ggf. zu nicht-tippbarem Text degradieren
+          (Apple Guideline 3.1.1: externe Abo-Links können Review-Ablehnung triggern,
+          wenn sie als Kauf-Umgehung gewertet werden. Standalone-URL ohne Preis-Info
+          sollte ok sein, ist aber ungeprüft — bei Submission erneut prüfen.) */}
+      <Button
+        title={t('settings.subscription_sheet_cta')}
+        onPress={() => Linking.openURL('https://rebreak.org/account')}
+        size="lg"
+        style={{ backgroundColor: accentColor }}
+      />
     </View>
   );
 }
diff --git a/apps/rebreak-native/components/Button.tsx b/apps/rebreak-native/components/Button.tsx
index ce01a4e..727edf2 100644
--- a/apps/rebreak-native/components/Button.tsx
+++ b/apps/rebreak-native/components/Button.tsx
@@ -1,57 +1,110 @@
-import { ActivityIndicator, Pressable, Text } from 'react-native';
-import type { PressableProps } from 'react-native';
+import {
+  ActivityIndicator,
+  Text,
+  TouchableOpacity,
+  View,
+  type ViewStyle,
+} from 'react-native';
+import { Ionicons } from '@expo/vector-icons';
+import { useColors } from '../lib/theme';
 
-type Variant = 'primary' | 'secondary' | 'ghost' | 'danger';
+type Variant = 'primary' | 'secondary' | 'ghost' | 'destructive';
+type Size = 'sm' | 'md' | 'lg';
 
-type Props = PressableProps & {
-  children: React.ReactNode;
+type Props = {
+  title: string;
+  onPress?: () => void;
   variant?: Variant;
+  size?: Size;
   loading?: boolean;
   disabled?: boolean;
-  className?: string;
+  icon?: React.ComponentProps<typeof Ionicons>['name'];
+  iconPosition?: 'left' | 'right';
+  style?: ViewStyle;
 };
 
-const variantStyles: Record<Variant, { container: string; text: string }> = {
-  primary: {
-    container: 'bg-rebreak-500 rounded-xl px-5 py-3.5 items-center justify-center',
-    text: 'text-white text-base',
-  },
-  secondary: {
-    container: 'bg-neutral-100 border border-neutral-200 rounded-xl px-5 py-3.5 items-center justify-center',
-    text: 'text-neutral-800 text-base',
-  },
-  ghost: {
-    container: 'rounded-xl px-5 py-3.5 items-center justify-center',
-    text: 'text-neutral-600 text-base',
-  },
-  danger: {
-    container: 'bg-red-50 border border-red-200 rounded-xl px-5 py-3.5 items-center justify-center',
-    text: 'text-red-600 text-base',
-  },
-};
+const PADDING: Record<Size, number> = { sm: 8, md: 12, lg: 16 };
+const FONT_SIZE: Record<Size, number> = { sm: 14, md: 15, lg: 16 };
 
 export function Button({
-  children,
+  title,
+  onPress,
   variant = 'primary',
+  size = 'md',
   loading = false,
   disabled = false,
-  className = '',
-  ...rest
+  icon,
+  iconPosition = 'left',
+  style,
 }: Props) {
-  const styles = variantStyles[variant];
+  const colors = useColors();
   const isDisabled = disabled || loading;
+  const paddingVertical = PADDING[size];
+  const fontSize = FONT_SIZE[size];
+
+  const containerBase: ViewStyle = {
+    borderRadius: 14,
+    paddingVertical,
+    paddingHorizontal: 16,
+    alignItems: 'center',
+    justifyContent: 'center',
+    flexDirection: 'row',
+    gap: 8,
+    opacity: isDisabled ? 0.5 : 1,
+  };
+
+  let containerVariant: ViewStyle;
+  let textColor: string;
+  let indicatorColor: string;
+
+  switch (variant) {
+    case 'secondary':
+      containerVariant = {
+        borderWidth: 1.5,
+        borderColor: colors.brandOrange,
+      };
+      textColor = colors.brandOrange;
+      indicatorColor = colors.brandOrange;
+      break;
+    case 'ghost':
+      containerVariant = {};
+      textColor = colors.brandOrange;
+      indicatorColor = colors.brandOrange;
+      break;
+    case 'destructive':
+      containerVariant = { backgroundColor: colors.error };
+      textColor = '#ffffff';
+      indicatorColor = '#ffffff';
+      break;
+    default:
+      containerVariant = { backgroundColor: colors.brandOrange };
+      textColor = '#ffffff';
+      indicatorColor = '#ffffff';
+      break;
+  }
+
+  const iconEl = icon ? (
+    <Ionicons name={icon} size={fontSize + 2} color={loading ? 'transparent' : textColor} />
+  ) : null;
 
   return (
-    <Pressable
-      className={`${styles.container} ${isDisabled ? 'opacity-50' : ''} ${className}`}
+    <TouchableOpacity
+      onPress={onPress}
       disabled={isDisabled}
-      {...rest}
+      activeOpacity={0.7}
+      style={[containerBase, containerVariant, style]}
     >
       {loading ? (
-        <ActivityIndicator color={variant === 'primary' ? '#fff' : '#f59e0b'} size="small" />
+        <ActivityIndicator color={indicatorColor} size="small" />
       ) : (
-        <Text className={styles.text} style={{ fontFamily: 'Nunito_600SemiBold' }}>{children}</Text>
+        <>
+          {iconEl && iconPosition === 'left' ? iconEl : null}
+          <Text style={{ fontSize, color: textColor, fontFamily: 'Nunito_600SemiBold' }}>
+            {title}
+          </Text>
+          {iconEl && iconPosition === 'right' ? iconEl : null}
+        </>
       )}
-    </Pressable>
+    </TouchableOpacity>
   );
 }
diff --git a/apps/rebreak-native/components/devices/AddMacSheet.tsx b/apps/rebreak-native/components/devices/AddMacSheet.tsx
index 77345e3..206952d 100644
--- a/apps/rebreak-native/components/devices/AddMacSheet.tsx
+++ b/apps/rebreak-native/components/devices/AddMacSheet.tsx
@@ -3,7 +3,6 @@ import {
   Alert,
   Linking,
   ScrollView,
-  TouchableOpacity,
   Text,
   TextInput,
   View,
@@ -15,6 +14,7 @@ import * as Haptics from 'expo-haptics';
 import { useColors } from '../../lib/theme';
 import { FormSheet } from '../FormSheet';
 import { RiveAvatar } from '../RiveAvatar';
+import { Button } from '../Button';
 import { useProtectedDevicesStore } from '../../stores/protectedDevices';
 import { useProtectedDevicesRealtime } from '../../hooks/useProtectedDevicesRealtime';
 import { useRouter } from 'expo-router';
@@ -197,26 +197,12 @@ function Step1LabelContent({
         </Text>
       ) : null}
 
-      <TouchableOpacity
+      <Button
+        title={t('devices.prepare_profile')}
         onPress={onPrepare}
+        loading={enrolling}
         disabled={enrolling}
-        activeOpacity={0.7}
-        style={{
-          backgroundColor: colors.brandOrange,
-          borderRadius: 14,
-          paddingVertical: 12,
-          alignItems: 'center',
-          opacity: enrolling ? 0.7 : 1,
-        }}
-      >
-        {enrolling ? (
-          <ActivityIndicator color="#fff" />
-        ) : (
-          <Text style={{ fontSize: 16, color: '#fff', fontFamily: 'Nunito_700Bold' }}>
-            {t('devices.prepare_profile')}
-          </Text>
-        )}
-      </TouchableOpacity>
+      />
     </View>
   );
 }
@@ -308,24 +294,11 @@ function Step2OnboardingContent({
       </View>
 
       {/* Download button */}
-      <TouchableOpacity
+      <Button
+        title={t('devices.download_button')}
         onPress={onDownload}
-        activeOpacity={0.7}
-        style={{
-          backgroundColor: colors.brandOrange,
-          borderRadius: 14,
-          paddingVertical: 12,
-          alignItems: 'center',
-          flexDirection: 'row',
-          justifyContent: 'center',
-          gap: 8,
-        }}
-      >
-        <Ionicons name="download-outline" size={18} color="#fff" />
-        <Text style={{ fontSize: 16, color: '#fff', fontFamily: 'Nunito_700Bold' }}>
-          {t('devices.download_button')}
-        </Text>
-      </TouchableOpacity>
+        icon="download-outline"
+      />
 
       {/* Pending auto-detect pill */}
       <View
@@ -359,22 +332,13 @@ function Step2OnboardingContent({
       </View>
 
       {/* Need help */}
-      <TouchableOpacity
+      <Button
+        title={t('devices.need_help')}
         onPress={onNeedHelp}
-        activeOpacity={0.5}
-        style={{ alignItems: 'center' }}
-      >
-        <Text
-          style={{
-            fontSize: 13,
-            color: colors.textMuted,
-            fontFamily: 'Nunito_400Regular',
-            textDecorationLine: 'underline',
-          }}
-        >
-          {t('devices.need_help')}
-        </Text>
-      </TouchableOpacity>
+        variant="ghost"
+        size="sm"
+        style={{ alignSelf: 'center' }}
+      />
     </ScrollView>
   );
 }
@@ -424,22 +388,11 @@ function Step3SuccessContent({
         </Text>
       </View>
 
-      <TouchableOpacity
+      <Button
+        title={t('common.ok')}
         onPress={onClose}
-        activeOpacity={0.7}
-        style={{
-          backgroundColor: colors.brandOrange,
-          borderRadius: 14,
-          paddingVertical: 12,
-          paddingHorizontal: 40,
-          alignItems: 'center',
-          alignSelf: 'stretch',
-        }}
-      >
-        <Text style={{ fontSize: 16, color: '#fff', fontFamily: 'Nunito_700Bold' }}>
-          {t('common.ok')}
-        </Text>
-      </TouchableOpacity>
+        style={{ alignSelf: 'stretch' }}
+      />
     </View>
   );
 }
diff --git a/apps/rebreak-native/components/devices/AddWindowsSheet.tsx b/apps/rebreak-native/components/devices/AddWindowsSheet.tsx
index 2369cc9..d041953 100644
--- a/apps/rebreak-native/components/devices/AddWindowsSheet.tsx
+++ b/apps/rebreak-native/components/devices/AddWindowsSheet.tsx
@@ -1,9 +1,7 @@
 import {
-  ActivityIndicator,
   Alert,
   Linking,
   ScrollView,
-  TouchableOpacity,
   Text,
   TextInput,
   View,
@@ -15,6 +13,7 @@ import * as Haptics from 'expo-haptics';
 import { useColors } from '../../lib/theme';
 import { FormSheet } from '../FormSheet';
 import { RiveAvatar } from '../RiveAvatar';
+import { Button } from '../Button';
 import { useProtectedDevicesStore } from '../../stores/protectedDevices';
 import { useRouter } from 'expo-router';
 
@@ -205,26 +204,12 @@ function WindowsStep1LabelContent({
         </Text>
       ) : null}
 
-      <TouchableOpacity
+      <Button
+        title={t('devices.prepare_profile')}
         onPress={onPrepare}
+        loading={enrolling}
         disabled={enrolling}
-        activeOpacity={0.7}
-        style={{
-          backgroundColor: colors.brandOrange,
-          borderRadius: 14,
-          paddingVertical: 12,
-          alignItems: 'center',
-          opacity: enrolling ? 0.7 : 1,
-        }}
-      >
-        {enrolling ? (
-          <ActivityIndicator color="#fff" />
-        ) : (
-          <Text style={{ fontSize: 16, color: '#fff', fontFamily: 'Nunito_700Bold' }}>
-            {t('devices.prepare_profile')}
-          </Text>
-        )}
-      </TouchableOpacity>
+      />
     </View>
   );
 }
@@ -320,65 +305,29 @@ function WindowsStep2OnboardingContent({
       </View>
 
       {/* Download button */}
-      <TouchableOpacity
+      <Button
+        title={t('devices.windows_download_button')}
         onPress={onDownload}
-        activeOpacity={0.7}
-        style={{
-          backgroundColor: colors.brandOrange,
-          borderRadius: 14,
-          paddingVertical: 12,
-          alignItems: 'center',
-          flexDirection: 'row',
-          justifyContent: 'center',
-          gap: 8,
-        }}
-      >
-        <Ionicons name="download-outline" size={18} color="#fff" />
-        <Text style={{ fontSize: 16, color: '#fff', fontFamily: 'Nunito_700Bold' }}>
-          {t('devices.windows_download_button')}
-        </Text>
-      </TouchableOpacity>
+        icon="download-outline"
+      />
 
       {/* Confirm installed */}
-      <TouchableOpacity
+      <Button
+        title={t('devices.confirm_installed')}
         onPress={onConfirmInstalled}
+        variant="secondary"
+        loading={confirming}
         disabled={confirming}
-        activeOpacity={0.7}
-        style={{
-          borderWidth: 1.5,
-          borderColor: colors.brandOrange,
-          borderRadius: 14,
-          paddingVertical: 12,
-          alignItems: 'center',
-          opacity: confirming ? 0.7 : 1,
-        }}
-      >
-        {confirming ? (
-          <ActivityIndicator color={colors.brandOrange} />
-        ) : (
-          <Text style={{ fontSize: 15, color: colors.brandOrange, fontFamily: 'Nunito_600SemiBold' }}>
-            {t('devices.confirm_installed')}
-          </Text>
-        )}
-      </TouchableOpacity>
+      />
 
       {/* Need help */}
-      <TouchableOpacity
+      <Button
+        title={t('devices.need_help')}
         onPress={onNeedHelp}
-        activeOpacity={0.5}
-        style={{ alignItems: 'center' }}
-      >
-        <Text
-          style={{
-            fontSize: 13,
-            color: colors.textMuted,
-            fontFamily: 'Nunito_400Regular',
-            textDecorationLine: 'underline',
-          }}
-        >
-          {t('devices.need_help')}
-        </Text>
-      </TouchableOpacity>
+        variant="ghost"
+        size="sm"
+        style={{ alignSelf: 'center' }}
+      />
     </ScrollView>
   );
 }
@@ -428,22 +377,11 @@ function WindowsStep3SuccessContent({
         </Text>
       </View>
 
-      <TouchableOpacity
+      <Button
+        title={t('common.ok')}
         onPress={onClose}
-        activeOpacity={0.7}
-        style={{
-          backgroundColor: colors.brandOrange,
-          borderRadius: 14,
-          paddingVertical: 12,
-          paddingHorizontal: 40,
-          alignItems: 'center',
-          alignSelf: 'stretch',
-        }}
-      >
-        <Text style={{ fontSize: 16, color: '#fff', fontFamily: 'Nunito_700Bold' }}>
-          {t('common.ok')}
-        </Text>
-      </TouchableOpacity>
+        style={{ alignSelf: 'stretch' }}
+      />
     </View>
   );
 }
diff --git a/apps/rebreak-native/components/plan/PlanChangeSheet.tsx b/apps/rebreak-native/components/plan/PlanChangeSheet.tsx
index a9c5c32..9452046 100644
--- a/apps/rebreak-native/components/plan/PlanChangeSheet.tsx
+++ b/apps/rebreak-native/components/plan/PlanChangeSheet.tsx
@@ -5,7 +5,6 @@ import {
   Modal,
   ScrollView,
   Text,
-  TouchableOpacity,
   View,
 } from 'react-native';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
@@ -13,6 +12,7 @@ import { Ionicons } from '@expo/vector-icons';
 import { useTranslation } from 'react-i18next';
 import { apiFetch } from '../../lib/api';
 import { useColors } from '../../lib/theme';
+import { Button } from '../Button';
 import type { Plan } from '../../hooks/useMe';
 
 export type ChangePreviewItem = {
@@ -138,15 +138,11 @@ export function PlanChangeSheet({ visible, targetPlan, onConfirm, onClose }: Pro
                 <Text style={{ fontSize: 14, color: colors.error, fontFamily: 'Nunito_400Regular', textAlign: 'center' }}>
                   {error}
                 </Text>
-                <TouchableOpacity
-                  activeOpacity={0.7}
+                <Button
+                  title={t('common.back')}
                   onPress={onClose}
-                  style={{ paddingVertical: 12, paddingHorizontal: 24, backgroundColor: colors.surfaceElevated, borderRadius: 12 }}
-                >
-                  <Text style={{ fontSize: 14, color: colors.text, fontFamily: 'Nunito_600SemiBold' }}>
-                    {t('common.back')}
-                  </Text>
-                </TouchableOpacity>
+                  variant="ghost"
+                />
               </View>
             ) : preview ? (
               <SheetContent
@@ -337,43 +333,26 @@ function SheetContent({ preview, targetPlan, isDowngrade, colors, onConfirm, onC
 
       {/* CTAs */}
       <View style={{ gap: 10, marginTop: 4 }}>
-        <TouchableOpacity
-          activeOpacity={0.7}
+        <Button
+          title={isDowngrade ? t('plan.change.cta_confirm_downgrade') : t('plan.change.cta_confirm_upgrade')}
           onPress={onConfirm}
-          style={{
-            backgroundColor: '#007AFF',
-            borderRadius: 14,
-            paddingVertical: 16,
-            alignItems: 'center',
-          }}
-        >
-          <Text style={{ fontSize: 16, fontFamily: 'Nunito_700Bold', color: '#ffffff' }}>
-            {isDowngrade ? t('plan.change.cta_confirm_downgrade') : t('plan.change.cta_confirm_upgrade')}
-          </Text>
-        </TouchableOpacity>
+          size="lg"
+        />
 
         {isDowngrade && (
-          <TouchableOpacity
-            activeOpacity={0.7}
+          <Button
+            title={t('plan.change.cta_stay', { plan: PLAN_LABEL[preview.from] })}
             onPress={onClose}
-            style={{ paddingVertical: 12, alignItems: 'center' }}
-          >
-            <Text style={{ fontSize: 14, fontFamily: 'Nunito_400Regular', color: colors.textMuted }}>
-              {t('plan.change.cta_stay', { plan: PLAN_LABEL[preview.from] })}
-            </Text>
-          </TouchableOpacity>
+            variant="ghost"
+          />
         )}
 
         {!isDowngrade && (
-          <TouchableOpacity
-            activeOpacity={0.7}
+          <Button
+            title={t('common.cancel')}
             onPress={onClose}
-            style={{ paddingVertical: 12, alignItems: 'center' }}
-          >
-            <Text style={{ fontSize: 14, fontFamily: 'Nunito_400Regular', color: colors.textMuted }}>
-              {t('common.cancel')}
-            </Text>
-          </TouchableOpacity>
+            variant="ghost"
+          />
         )}
       </View>
     </>