diff --git a/SleepDebt.xcodeproj/project.pbxproj b/SleepDebt.xcodeproj/project.pbxproj
index 09ba48c..62b1229 100644
--- a/SleepDebt.xcodeproj/project.pbxproj
+++ b/SleepDebt.xcodeproj/project.pbxproj
@@ -14,6 +14,7 @@
 		6C560B932B495E3A00FDB70C /* HealthKitManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6C560B922B495E3A00FDB70C /* HealthKitManager.swift */; };
 		6CD7B4BB2B49AA5100D1D8B8 /* SleepDebtTabView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CD7B4BA2B49AA5100D1D8B8 /* SleepDebtTabView.swift */; };
 		6CD7B4BD2B49AB3F00D1D8B8 /* SettingsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CD7B4BC2B49AB3F00D1D8B8 /* SettingsView.swift */; };
+		6CD7B4C12B49C45400D1D8B8 /* SettingsNumberFieldView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CD7B4C02B49C45400D1D8B8 /* SettingsNumberFieldView.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -26,6 +27,7 @@
 		6C560B942B49605000FDB70C /* SleepDebt.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = SleepDebt.entitlements; sourceTree = "<group>"; };
 		6CD7B4BA2B49AA5100D1D8B8 /* SleepDebtTabView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SleepDebtTabView.swift; sourceTree = "<group>"; };
 		6CD7B4BC2B49AB3F00D1D8B8 /* SettingsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SettingsView.swift; sourceTree = "<group>"; };
+		6CD7B4C02B49C45400D1D8B8 /* SettingsNumberFieldView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SettingsNumberFieldView.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -63,6 +65,7 @@
 				6C560B862B495DED00FDB70C /* HomeView.swift */,
 				6CD7B4BA2B49AA5100D1D8B8 /* SleepDebtTabView.swift */,
 				6CD7B4BC2B49AB3F00D1D8B8 /* SettingsView.swift */,
+				6CD7B4C02B49C45400D1D8B8 /* SettingsNumberFieldView.swift */,
 				6C560B922B495E3A00FDB70C /* HealthKitManager.swift */,
 				6C560B882B495DEE00FDB70C /* Assets.xcassets */,
 				6C560B8A2B495DEE00FDB70C /* Preview Content */,
@@ -149,6 +152,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				6C560B872B495DED00FDB70C /* HomeView.swift in Sources */,
+				6CD7B4C12B49C45400D1D8B8 /* SettingsNumberFieldView.swift in Sources */,
 				6CD7B4BB2B49AA5100D1D8B8 /* SleepDebtTabView.swift in Sources */,
 				6CD7B4BD2B49AB3F00D1D8B8 /* SettingsView.swift in Sources */,
 				6C560B852B495DED00FDB70C /* SleepDebtApp.swift in Sources */,
diff --git a/SleepDebt/HealthKitManager.swift b/SleepDebt/HealthKitManager.swift
index 12ec4c8..d8021a9 100644
--- a/SleepDebt/HealthKitManager.swift
+++ b/SleepDebt/HealthKitManager.swift
@@ -26,6 +26,8 @@ class HealthKitManager: ObservableObject {
                 print(error)
             }
         }
+        self.getSleepForLastXDays(days: 7)
+        self.getSleepForLastXDays(days: 30)
     }
     
     func getSleepForLast7Days() -> Int {
diff --git a/SleepDebt/HomeView.swift b/SleepDebt/HomeView.swift
index 0347d13..b816be2 100644
--- a/SleepDebt/HomeView.swift
+++ b/SleepDebt/HomeView.swift
@@ -15,6 +15,7 @@ struct HomeView: View {
             Image(systemName: "globe")
                 .imageScale(.large)
                 .foregroundStyle(.tint)
+            Text(String(manager.getSleepForLast7Days()))
         }
         .padding()
     }
@@ -23,4 +24,5 @@ struct HomeView: View {
 #Preview {
     HomeView()
         .environmentObject(HealthKitManager())
+        .environmentObject(SleepDebtSettings())
 }
diff --git a/SleepDebt/SettingsNumberFieldView.swift b/SleepDebt/SettingsNumberFieldView.swift
new file mode 100644
index 0000000..77989cb
--- /dev/null
+++ b/SleepDebt/SettingsNumberFieldView.swift
@@ -0,0 +1,46 @@
+//
+//  SettingsNumberFieldView.swift
+//  SleepDebt
+//
+//  Created by Oliver Hnát on 06.01.2024.
+//
+
+import SwiftUI
+
+struct SettingsNumberFieldView: View {
+    @Binding var value: Int
+    var focusItem: FocusState<Bool>.Binding
+    var text: String
+    let formatter: NumberFormatter = {
+        let formatter = NumberFormatter()
+        formatter.numberStyle = .decimal
+        return formatter
+    }()
+    var body: some View {
+        LabeledContent {
+            TextField("", value: $value, formatter: formatter)
+                .keyboardType(.numberPad)
+                .focused(focusItem)
+                .multilineTextAlignment(.trailing)
+                .foregroundStyle(.blue)
+        } label: {
+            Text(text)
+                .fixedSize()
+        }
+    }
+}
+
+struct SettingsNumberFieldView_Preview: PreviewProvider {
+    
+    struct ContainerView: View {
+        @State var sleepDebtPeriod = 30
+        @FocusState var focusItem: Bool
+        var sleepDebtString = "Sleep debt period (days)"
+        var body: some View {
+            SettingsNumberFieldView(value: $sleepDebtPeriod, focusItem: $focusItem, text: sleepDebtString)
+        }
+    }
+    static var previews: some View {
+        ContainerView()
+    }
+}
diff --git a/SleepDebt/SettingsView.swift b/SleepDebt/SettingsView.swift
index c0b6bf0..c2f533d 100644
--- a/SleepDebt/SettingsView.swift
+++ b/SleepDebt/SettingsView.swift
@@ -8,9 +8,7 @@
 import SwiftUI
 
 struct SettingsView: View {
-    @State var sleepDebtPeriod = 30
-    @State var repaymentPeriod = 7
-    @State var desiredHoursOfSleep = 8
+    @EnvironmentObject var settings: SleepDebtSettings
     @FocusState private var focusItem: Bool
     private var repaymentString = "Repayment period (days)"
     private var sleepDebtString = "Sleep debt period (days)"
@@ -20,9 +18,9 @@ struct SettingsView: View {
         NavigationStack {
             List {
                 Section {
-                    SettingsNumberField(value: $sleepDebtPeriod, focusItem: $focusItem, text: sleepDebtString)
-                    SettingsNumberField(value: $repaymentPeriod, focusItem: $focusItem, text: repaymentString)
-                    SettingsNumberField(value: $desiredHoursOfSleep, focusItem: $focusItem, text: desiredHoursOfSleepString)
+                    SettingsNumberFieldView(value: $settings.sleepDebtPeriod, focusItem: $focusItem, text: sleepDebtString)
+                    SettingsNumberFieldView(value: $settings.repaymentPeriod, focusItem: $focusItem, text: repaymentString)
+                    SettingsNumberFieldView(value: $settings.desiredHoursOfSleep, focusItem: $focusItem, text: desiredHoursOfSleepString)
                 }
                 
             }
@@ -31,6 +29,7 @@ struct SettingsView: View {
         .onTapGesture{
             focusItem = false
         }
+        .environmentObject(settings)
     }
     
     
@@ -38,27 +37,7 @@ struct SettingsView: View {
 
 #Preview {
     SettingsView()
+        .environmentObject(HealthKitManager())
+        .environmentObject(SleepDebtSettings())
 }
 
-struct SettingsNumberField: View {
-    @Binding var value: Int
-    var focusItem: FocusState<Bool>.Binding
-    var text: String
-    let formatter: NumberFormatter = {
-        let formatter = NumberFormatter()
-        formatter.numberStyle = .decimal
-        return formatter
-    }()
-    var body: some View {
-        LabeledContent {
-            TextField("", value: $value, formatter: formatter)
-                .keyboardType(.numberPad)
-                .focused(focusItem)
-                .multilineTextAlignment(.trailing)
-                .foregroundStyle(.blue)
-        } label: {
-            Text(text)
-                .fixedSize()
-        }
-    }
-}
diff --git a/SleepDebt/SleepDebtApp.swift b/SleepDebt/SleepDebtApp.swift
index 507ce98..d564e46 100644
--- a/SleepDebt/SleepDebtApp.swift
+++ b/SleepDebt/SleepDebtApp.swift
@@ -10,10 +10,18 @@ import SwiftUI
 @main
 struct SleepDebtApp: App {
     @StateObject var healthKitManager = HealthKitManager()
+    @StateObject var settings = SleepDebtSettings()
     var body: some Scene {
         WindowGroup {
             SleepDebtTabView()
                 .environmentObject(healthKitManager)
+                .environmentObject(settings)
         }
     }
 }
+
+class SleepDebtSettings: ObservableObject {
+    @Published var sleepDebtPeriod = 30
+    @Published var repaymentPeriod = 7
+    @Published var desiredHoursOfSleep = 8
+}
diff --git a/SleepDebt/SleepDebtTabView.swift b/SleepDebt/SleepDebtTabView.swift
index da82aed..0da1add 100644
--- a/SleepDebt/SleepDebtTabView.swift
+++ b/SleepDebt/SleepDebtTabView.swift
@@ -9,7 +9,6 @@ import SwiftUI
 
 struct SleepDebtTabView: View {
     @State var selectedTab = "Home"
-    @StateObject var healthKitManager = HealthKitManager()
     var body: some View {
         TabView(selection: $selectedTab) {
             HomeView()
@@ -18,18 +17,18 @@ struct SleepDebtTabView: View {
                     Image(systemName: "house")
                     Text("Home")
                 }
-                .environmentObject(healthKitManager)
             SettingsView()
                 .tag("Settings")
                 .tabItem {
                     Image(systemName: "gear")
                     Text("Settings")
                 }
-                .environmentObject(healthKitManager)
         }
     }
 }
 
 #Preview {
     SleepDebtTabView()
+        .environmentObject(SleepDebtSettings())
+        .environmentObject(HealthKitManager())
 }