diff --git a/README.md b/README.md
index b4362cb..5a30014 100644
--- a/README.md
+++ b/README.md
@@ -32,3 +32,16 @@ Dies ist eine Flutter-Anwendung, die es Benutzern ermöglicht, den Zinseszinseff
   
 
 Diese Flutter-Anwendung bietet eine benutzerfreundliche Oberfläche zur Berechnung des Zinseszinseffekts und zur Visualisierung des Investitionsfortschritts.
+
+### Hinweis: 
+## Diese App verwendet plattformspezifische Widgets für iOS. Konkret nutzen wir folgende Cupertino-Widgets:
+
+- `CupertinoTextField`
+- `CupertinoColors`
+- `CupertinoIcons`
+
+Die App läuft auf mehreren Plattformen. Wir haben sie auf iOS und Web getestet.
+
+## Lokalisierung
+
+Die App unterstützt Lokalisierung (l10n). Einige Widgets verwenden vordefinierte Texte, die je nach eingestellter Sprache automatisch übersetzt werden.
\ No newline at end of file
diff --git a/android/.gitignore b/android/.gitignore
deleted file mode 100644
index 6f56801..0000000
--- a/android/.gitignore
+++ /dev/null
@@ -1,13 +0,0 @@
-gradle-wrapper.jar
-/.gradle
-/captures/
-/gradlew
-/gradlew.bat
-/local.properties
-GeneratedPluginRegistrant.java
-
-# Remember to never publicly share your keystore.
-# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
-key.properties
-**/*.keystore
-**/*.jks
diff --git a/android/app/build.gradle b/android/app/build.gradle
deleted file mode 100644
index 40841d1..0000000
--- a/android/app/build.gradle
+++ /dev/null
@@ -1,67 +0,0 @@
-plugins {
-    id "com.android.application"
-    id "kotlin-android"
-    id "dev.flutter.flutter-gradle-plugin"
-}
-
-def localProperties = new Properties()
-def localPropertiesFile = rootProject.file('local.properties')
-if (localPropertiesFile.exists()) {
-    localPropertiesFile.withReader('UTF-8') { reader ->
-        localProperties.load(reader)
-    }
-}
-
-def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
-if (flutterVersionCode == null) {
-    flutterVersionCode = '1'
-}
-
-def flutterVersionName = localProperties.getProperty('flutter.versionName')
-if (flutterVersionName == null) {
-    flutterVersionName = '1.0'
-}
-
-android {
-    namespace "com.example.flutter_application_1"
-    compileSdk flutter.compileSdkVersion
-    ndkVersion flutter.ndkVersion
-
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-
-    kotlinOptions {
-        jvmTarget = '1.8'
-    }
-
-    sourceSets {
-        main.java.srcDirs += 'src/main/kotlin'
-    }
-
-    defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "com.example.flutter_application_1"
-        // You can update the following values to match your application needs.
-        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
-        minSdkVersion flutter.minSdkVersion
-        targetSdkVersion flutter.targetSdkVersion
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
-    }
-
-    buildTypes {
-        release {
-            // TODO: Add your own signing config for the release build.
-            // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig signingConfigs.debug
-        }
-    }
-}
-
-flutter {
-    source '../..'
-}
-
-dependencies {}
diff --git a/android/app/src/debug/AndroidManifest.xml b/android/app/src/debug/AndroidManifest.xml
deleted file mode 100644
index 399f698..0000000
--- a/android/app/src/debug/AndroidManifest.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    <!-- The INTERNET permission is required for development. Specifically,
-         the Flutter tool needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
deleted file mode 100644
index 2babbb1..0000000
--- a/android/app/src/main/AndroidManifest.xml
+++ /dev/null
@@ -1,44 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    <application
-        android:label="flutter_application_1"
-        android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher">
-        <activity
-            android:name=".MainActivity"
-            android:exported="true"
-            android:launchMode="singleTop"
-            android:theme="@style/LaunchTheme"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
-            android:hardwareAccelerated="true"
-            android:windowSoftInputMode="adjustResize">
-            <!-- Specifies an Android theme to apply to this Activity as soon as
-                 the Android process has started. This theme is visible to the user
-                 while the Flutter UI initializes. After that, this theme continues
-                 to determine the Window background behind the Flutter UI. -->
-            <meta-data
-              android:name="io.flutter.embedding.android.NormalTheme"
-              android:resource="@style/NormalTheme"
-              />
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
-        </activity>
-        <!-- Don't delete the meta-data below.
-             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
-        <meta-data
-            android:name="flutterEmbedding"
-            android:value="2" />
-    </application>
-    <!-- Required to query activities that can process text, see:
-         https://developer.android.com/training/package-visibility?hl=en and
-         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
-
-         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
-    <queries>
-        <intent>
-            <action android:name="android.intent.action.PROCESS_TEXT"/>
-            <data android:mimeType="text/plain"/>
-        </intent>
-    </queries>
-</manifest>
diff --git a/android/app/src/main/kotlin/com/example/flutter_application_1/MainActivity.kt b/android/app/src/main/kotlin/com/example/flutter_application_1/MainActivity.kt
deleted file mode 100644
index 7751704..0000000
--- a/android/app/src/main/kotlin/com/example/flutter_application_1/MainActivity.kt
+++ /dev/null
@@ -1,5 +0,0 @@
-package com.example.flutter_application_1
-
-import io.flutter.embedding.android.FlutterActivity
-
-class MainActivity: FlutterActivity()
diff --git a/android/app/src/main/res/drawable-v21/launch_background.xml b/android/app/src/main/res/drawable-v21/launch_background.xml
deleted file mode 100644
index f74085f..0000000
--- a/android/app/src/main/res/drawable-v21/launch_background.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="?android:colorBackground" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>
diff --git a/android/app/src/main/res/drawable/launch_background.xml b/android/app/src/main/res/drawable/launch_background.xml
deleted file mode 100644
index 304732f..0000000
--- a/android/app/src/main/res/drawable/launch_background.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@android:color/white" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher.png b/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
deleted file mode 100644
index db77bb4..0000000
Binary files a/android/app/src/main/res/mipmap-hdpi/ic_launcher.png and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher.png b/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
deleted file mode 100644
index 17987b7..0000000
Binary files a/android/app/src/main/res/mipmap-mdpi/ic_launcher.png and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
deleted file mode 100644
index 09d4391..0000000
Binary files a/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
deleted file mode 100644
index d5f1c8d..0000000
Binary files a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
deleted file mode 100644
index 4d6372e..0000000
Binary files a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png and /dev/null differ
diff --git a/android/app/src/main/res/values-night/styles.xml b/android/app/src/main/res/values-night/styles.xml
deleted file mode 100644
index 06952be..0000000
--- a/android/app/src/main/res/values-night/styles.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
-    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <!-- Show a splash screen on the activity. Automatically removed when
-             the Flutter engine draws its first frame -->
-        <item name="android:windowBackground">@drawable/launch_background</item>
-    </style>
-    <!-- Theme applied to the Android Window as soon as the process has started.
-         This theme determines the color of the Android Window while your
-         Flutter UI initializes, as well as behind your Flutter UI while its
-         running.
-
-         This Theme is only used starting with V2 of Flutter's Android embedding. -->
-    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <item name="android:windowBackground">?android:colorBackground</item>
-    </style>
-</resources>
diff --git a/android/app/src/main/res/values/styles.xml b/android/app/src/main/res/values/styles.xml
deleted file mode 100644
index cb1ef88..0000000
--- a/android/app/src/main/res/values/styles.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
-    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
-        <!-- Show a splash screen on the activity. Automatically removed when
-             the Flutter engine draws its first frame -->
-        <item name="android:windowBackground">@drawable/launch_background</item>
-    </style>
-    <!-- Theme applied to the Android Window as soon as the process has started.
-         This theme determines the color of the Android Window while your
-         Flutter UI initializes, as well as behind your Flutter UI while its
-         running.
-
-         This Theme is only used starting with V2 of Flutter's Android embedding. -->
-    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
-        <item name="android:windowBackground">?android:colorBackground</item>
-    </style>
-</resources>
diff --git a/android/app/src/profile/AndroidManifest.xml b/android/app/src/profile/AndroidManifest.xml
deleted file mode 100644
index 399f698..0000000
--- a/android/app/src/profile/AndroidManifest.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    <!-- The INTERNET permission is required for development. Specifically,
-         the Flutter tool needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>
diff --git a/android/build.gradle b/android/build.gradle
deleted file mode 100644
index bc157bd..0000000
--- a/android/build.gradle
+++ /dev/null
@@ -1,18 +0,0 @@
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-}
-
-rootProject.buildDir = '../build'
-subprojects {
-    project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
-    project.evaluationDependsOn(':app')
-}
-
-tasks.register("clean", Delete) {
-    delete rootProject.buildDir
-}
diff --git a/android/gradle.properties b/android/gradle.properties
deleted file mode 100644
index 598d13f..0000000
--- a/android/gradle.properties
+++ /dev/null
@@ -1,3 +0,0 @@
-org.gradle.jvmargs=-Xmx4G
-android.useAndroidX=true
-android.enableJetifier=true
diff --git a/android/gradle/wrapper/gradle-wrapper.properties b/android/gradle/wrapper/gradle-wrapper.properties
deleted file mode 100644
index e1ca574..0000000
--- a/android/gradle/wrapper/gradle-wrapper.properties
+++ /dev/null
@@ -1,5 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip
diff --git a/android/settings.gradle b/android/settings.gradle
deleted file mode 100644
index 1d6d19b..0000000
--- a/android/settings.gradle
+++ /dev/null
@@ -1,26 +0,0 @@
-pluginManagement {
-    def flutterSdkPath = {
-        def properties = new Properties()
-        file("local.properties").withInputStream { properties.load(it) }
-        def flutterSdkPath = properties.getProperty("flutter.sdk")
-        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
-        return flutterSdkPath
-    }
-    settings.ext.flutterSdkPath = flutterSdkPath()
-
-    includeBuild("${settings.ext.flutterSdkPath}/packages/flutter_tools/gradle")
-
-    repositories {
-        google()
-        mavenCentral()
-        gradlePluginPortal()
-    }
-}
-
-plugins {
-    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version "7.3.0" apply false
-    id "org.jetbrains.kotlin.android" version "1.7.10" apply false
-}
-
-include ":app"