diff --git a/firka/assets/majesticons/wrenchSolid.svg b/firka/assets/majesticons/wrenchSolid.svg
new file mode 100644
index 00000000..d0776b38
--- /dev/null
+++ b/firka/assets/majesticons/wrenchSolid.svg
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" fill="none" viewBox="0 0 24 24">
+  <path fill="#1F2937" d="M18.26 2.926a7.002 7.002 0 0 0-9.612 8.67l-5.254 5.253a3 3 0 0 0 4.243 4.243l5.253-5.254a7.003 7.003 0 0 0 8.67-9.613 1 1 0 0 0-1.61-.275l-2.828 2.828a1 1 0 1 1-1.414-1.414l2.828-2.828a1 1 0 0 0-.276-1.61Z"/>
+</svg>
diff --git a/firka/lib/helpers/extensions.dart b/firka/lib/helpers/extensions.dart
index 038f23d7..a7d6a388 100644
--- a/firka/lib/helpers/extensions.dart
+++ b/firka/lib/helpers/extensions.dart
@@ -42,7 +42,8 @@ enum FormatMode {
   da,
   dd,
   yyyymmddwedd,
-  yyyymmmm
+  yyyymmmm,
+  yyyymmddhhmmss
 }
 
 enum Cycle { morning, day, afternoon, night }
@@ -56,7 +57,7 @@ extension DateExtension on DateTime {
     var yesterday = today.subtract(Duration(days: 1));
     var yesterdayLim = today.subtract(Duration(days: 2));
 
-    var weekStart = today.subtract(Duration(days: today.weekday - 1));
+    var weekStart = subtract(Duration(days: weekday - 1));
     var weekEnd = weekStart.add(Duration(days: 6));
 
     switch (mode) {
@@ -91,6 +92,8 @@ extension DateExtension on DateTime {
         return "${DateFormat('yyyy MMM. dd').format(weekStart).toLowerCase()}-${DateFormat('dd').format(weekEnd)}";
       case FormatMode.yyyymmmm:
         return DateFormat('yyyy MMMM').format(this);
+      case FormatMode.yyyymmddhhmmss:
+        return DateFormat('yyyy-MM-dd hh:mm:ss').format(this);
     }
   }
 
diff --git a/firka/lib/helpers/settings/setting.dart b/firka/lib/helpers/settings/setting.dart
index 5072b9df..488382a6 100644
--- a/firka/lib/helpers/settings/setting.dart
+++ b/firka/lib/helpers/settings/setting.dart
@@ -31,6 +31,8 @@ const ttToastLessonNo = 1012;
 const ttToastTestsAndHw = 1013;
 const ttToastBreaks = 1014;
 
+const statsForNerds = 1015;
+
 bool always() {
   return true;
 }
@@ -226,6 +228,13 @@ class SettingsStore {
                     isAndroid),
               }),
               always),
+          "stats_for_nerds": SettingsBoolean(
+              statsForNerds,
+              FirkaIconType.majesticonsLocal,
+              "wrenchSolid",
+              l10n.s_stats_for_nerds,
+              false,
+              always),
           "notifications": SettingsSubGroup(0, FirkaIconType.majesticons,
               Majesticon.bellSolid, "Értesítések", LinkedHashMap.of({}), never),
           "extras": SettingsSubGroup(
diff --git a/firka/lib/l10n b/firka/lib/l10n
index e69d8c37..45576403 160000
--- a/firka/lib/l10n
+++ b/firka/lib/l10n
@@ -1 +1 @@
-Subproject commit e69d8c372301fa7a68f5017747658095b02aec2a
+Subproject commit 45576403397d46c575e0aaff88ecf0d510b069ab
diff --git a/firka/lib/ui/phone/widgets/lesson.dart b/firka/lib/ui/phone/widgets/lesson.dart
index 3efd0b61..8f87e38c 100644
--- a/firka/lib/ui/phone/widgets/lesson.dart
+++ b/firka/lib/ui/phone/widgets/lesson.dart
@@ -1,7 +1,6 @@
 import 'package:firka/helpers/extensions.dart';
 import 'package:firka/helpers/settings/setting.dart';
 import 'package:firka/helpers/ui/firka_card.dart';
-import 'package:firka/l10n/app_localizations.dart';
 import 'package:firka/main.dart';
 import 'package:firka/ui/model/style.dart';
 import 'package:flutter/material.dart';
@@ -48,7 +47,7 @@ class LessonWidget extends StatelessWidget {
     elements.add(GestureDetector(
       onTap: () {
         showLessonBottomSheet(
-            context, data.l10n, lesson, lessonNo, accent, secondary, bgColor);
+            context, data, lesson, lessonNo, accent, secondary, bgColor);
       },
       child: FirkaCard(
         left: [
@@ -179,12 +178,14 @@ class LessonWidget extends StatelessWidget {
 
 void showLessonBottomSheet(
     BuildContext context,
-    AppLocalizations l10n,
+    AppInitialization data,
     Lesson lesson,
     int? lessonNo,
     Color accent,
     Color secondary,
     Color bgColor) {
+  final statsForNerdsEnabled =
+      data.settings.group("settings").boolean("stats_for_nerds");
   showModalBottomSheet(
     context: context,
     elevation: 100,
@@ -193,9 +194,22 @@ void showLessonBottomSheet(
     backgroundColor: Colors.transparent,
     barrierColor: appStyle.colors.a15p,
     constraints: BoxConstraints(
-      maxHeight: MediaQuery.of(context).size.height * 0.3,
+      maxHeight: MediaQuery.of(context).size.height *
+          (statsForNerdsEnabled ? 0.35 : 0.3),
     ),
     builder: (BuildContext context) {
+      Widget statsForNerds = SizedBox();
+
+      final y2k = DateTime(2000, 1);
+
+      if (statsForNerdsEnabled) {
+        final stats =
+            "${data.l10n.stats_date}: ${lesson.start.isAfter(y2k) ? lesson.start.format(data.l10n, FormatMode.yyyymmddhhmmss) : "N/A"}\n"
+            "${data.l10n.stats_created_at}: ${lesson.createdAt.isAfter(y2k) ? lesson.createdAt.format(data.l10n, FormatMode.yyyymmddhhmmss) : "N/A"}\n"
+            "${data.l10n.stats_last_mod}: ${lesson.lastModifiedAt.isAfter(y2k) ? lesson.lastModifiedAt.format(data.l10n, FormatMode.yyyymmddhhmmss) : "N/A"}";
+        statsForNerds = Text(stats, style: appStyle.fonts.B_16R);
+      }
+
       return Stack(
         children: [
           Positioned.fill(
@@ -262,7 +276,7 @@ void showLessonBottomSheet(
                                 .apply(color: appStyle.colors.textPrimary),
                           ),
                           Text(
-                            '${lesson.start.format(l10n, FormatMode.hmm)} - ${lesson.end.format(l10n, FormatMode.hmm)}',
+                            '${lesson.start.format(data.l10n, FormatMode.hmm)} - ${lesson.end.format(data.l10n, FormatMode.hmm)}',
                             style: appStyle.fonts.B_14R
                                 .apply(color: appStyle.colors.textPrimary),
                           ),
@@ -275,14 +289,16 @@ void showLessonBottomSheet(
                         crossAxisAlignment: CrossAxisAlignment.start,
                         children: [
                           Text(
-                            l10n.lesson_subject,
+                            data.l10n.lesson_subject,
                             style: appStyle.fonts.H_14px,
                           ),
                           SizedBox(height: 4),
                           Text(
                             lesson.theme ?? 'N/A',
                             style: appStyle.fonts.B_16R,
-                          )
+                          ),
+                          SizedBox(height: 4),
+                          statsForNerds
                         ],
                       )
                     ])