diff --git a/lib/screens/metering/components/bottom_controls/components/measure_button/widget_button_measure.dart b/lib/screens/metering/components/bottom_controls/components/measure_button/widget_button_measure.dart
index e306dc8..e918557 100644
--- a/lib/screens/metering/components/bottom_controls/components/measure_button/widget_button_measure.dart
+++ b/lib/screens/metering/components/bottom_controls/components/measure_button/widget_button_measure.dart
@@ -3,6 +3,7 @@ import 'package:lightmeter/generated/l10n.dart';
 import 'package:lightmeter/providers/user_preferences_provider.dart';
 import 'package:lightmeter/res/dimens.dart';
 import 'package:lightmeter/screens/shared/filled_circle/widget_circle_filled.dart';
+import 'package:lightmeter/utils/context_utils.dart';
 
 const String _subscript100 = '\u2081\u2080\u2080';
 
@@ -106,7 +107,7 @@ class _EvValueText extends StatelessWidget {
   }
 
   String _text(BuildContext context) {
-    final bool showEv100 = UserPreferencesProvider.showEv100Of(context);
+    final bool showEv100 = context.isPro && UserPreferencesProvider.showEv100Of(context);
     final StringBuffer buffer = StringBuffer()
       ..writeAll([
         (showEv100 ? ev100 : ev).toStringAsFixed(1),
diff --git a/lib/screens/settings/components/metering/components/show_ev_100/widget_list_tile_show_ev_100.dart b/lib/screens/settings/components/metering/components/show_ev_100/widget_list_tile_show_ev_100.dart
index 74e3339..2007526 100644
--- a/lib/screens/settings/components/metering/components/show_ev_100/widget_list_tile_show_ev_100.dart
+++ b/lib/screens/settings/components/metering/components/show_ev_100/widget_list_tile_show_ev_100.dart
@@ -2,18 +2,23 @@ import 'package:flutter/material.dart';
 import 'package:lightmeter/generated/l10n.dart';
 import 'package:lightmeter/providers/user_preferences_provider.dart';
 import 'package:lightmeter/res/dimens.dart';
+import 'package:lightmeter/screens/settings/components/shared/disable/widget_disable.dart';
+import 'package:lightmeter/utils/context_utils.dart';
 
 class ShowEv100ListTile extends StatelessWidget {
   const ShowEv100ListTile({super.key});
 
   @override
   Widget build(BuildContext context) {
-    return SwitchListTile(
-      secondary: const Icon(Icons.adjust),
-      title: Text(S.of(context).showEv100),
-      value: UserPreferencesProvider.showEv100Of(context),
-      onChanged: (_) => UserPreferencesProvider.of(context).toggleShowEV100(),
-      contentPadding: const EdgeInsets.symmetric(horizontal: Dimens.paddingM),
+    return Disable(
+      disable: !context.isPro,
+      child: SwitchListTile(
+        secondary: const Icon(Icons.adjust),
+        title: Text(S.of(context).showEv100),
+        value: context.isPro && UserPreferencesProvider.showEv100Of(context),
+        onChanged: (_) => UserPreferencesProvider.of(context).toggleShowEV100(),
+        contentPadding: const EdgeInsets.symmetric(horizontal: Dimens.paddingM),
+      ),
     );
   }
 }