diff --git a/.gitignore b/.gitignore
index 4104f9a..6a49ddb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,7 +38,12 @@ lib/generated_plugin_registrant.dart
 # Symbolication related
 app.*.symbols
 
-# Obfuscation related
 app.*.map.json
-/ios/build/
+ios/build/
 .firebase/
+
+# build related
+
+*.apk
+*.ipa
+Payload
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 860e096..5299c45 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## [1.3.2]
+
+- Added makefile with building related functionality
+- Removed landscape orientations
+- Upgraded to Flutter 2.2 and Dart 2.13
+- Updated Gradle Java path in `gradle.properties`
+- Raised `minSdkVersion` in `build.gradle`
+- Updated permissions in `AndroidManifest.xml`
+- Refactored some code
+- Made the open log file force webview
+- Used a `Form` for the `TextField` and added validators
+- Removed `maxLength` in `TextField`s
+- Updated FAB to work with validators
+
 ## [1.3.1]
 
 - Fixed keyboard immediately closing
diff --git a/android/app/build.gradle b/android/app/build.gradle
index fe1ad01..6e4b32e 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -38,7 +38,7 @@ android {
 
     defaultConfig {
         applicationId "com.therookiecoder.bp_logger"
-        minSdkVersion 16
+        minSdkVersion 19
         targetSdkVersion 29
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index bc1b347..12af0c2 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -5,8 +5,7 @@
          In most cases you can leave this as-is, but you if you want to provide
          additional functionality it is fine to subclass or reimplement
          FlutterApplication and put your custom class here. -->
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.INTERNET"/>
     <application
         android:name="io.flutter.app.FlutterApplication"
         android:label="BP Logger"
@@ -17,7 +16,8 @@
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
-            android:windowSoftInputMode="adjustResize">
+            android:windowSoftInputMode="adjustResize"
+            android:screenOrientation="portrait">
             <!-- 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
diff --git a/android/gradle.properties b/android/gradle.properties
index f8bbb63..3b05ccb 100644
--- a/android/gradle.properties
+++ b/android/gradle.properties
@@ -1,5 +1,5 @@
 org.gradle.jvmargs=-Xmx1536M
-org.gradle.java.home = /Users/ilesh/Library/Java/JavaVirtualMachines/openjdk-15.0.2/Contents/Home/
+org.gradle.java.home = /Users/ilesh/Library/Java/JavaVirtualMachines/adopt-openjdk-15.0.2/Contents/Home/
 android.useAndroidX=true
 android.enableJetifier=true
 android.enableR8=true
diff --git a/ios/Runner/Info.plist b/ios/Runner/Info.plist
index fb89e14..5966d74 100644
--- a/ios/Runner/Info.plist
+++ b/ios/Runner/Info.plist
@@ -52,8 +52,7 @@
 	<key>UISupportedInterfaceOrientations</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
 	</array>
 	<key>UISupportedInterfaceOrientations~ipad</key>
 	<array>
diff --git a/ios/build/XCBuildData/BuildDescriptionCacheIndex-971d7343dfcc9e1a0756d86c31095cb8 b/ios/build/XCBuildData/BuildDescriptionCacheIndex-971d7343dfcc9e1a0756d86c31095cb8
index 143ad26..9291085 100644
Binary files a/ios/build/XCBuildData/BuildDescriptionCacheIndex-971d7343dfcc9e1a0756d86c31095cb8 and b/ios/build/XCBuildData/BuildDescriptionCacheIndex-971d7343dfcc9e1a0756d86c31095cb8 differ
diff --git a/ios/build/XCBuildData/build.db b/ios/build/XCBuildData/build.db
index faa2c09..8b2c301 100644
Binary files a/ios/build/XCBuildData/build.db and b/ios/build/XCBuildData/build.db differ
diff --git a/lib/HomePage.dart b/lib/HomePage.dart
index 10bdeca..394cf71 100644
--- a/lib/HomePage.dart
+++ b/lib/HomePage.dart
@@ -23,10 +23,11 @@ class HomePage extends StatefulWidget {
 }
 
 class _HomePageState extends State<HomePage> {
-  static DateTime date = new DateTime.now();
-  var textFieldController1 = TextEditingController(); // Diastolic
-  var textFieldController2 = TextEditingController(); // Systolic
+  DateTime date = new DateTime.now();
+  TextEditingController diastolicTEC = TextEditingController(); // Diastolic
+  TextEditingController systolicTEC = TextEditingController(); // Systolic
   late DriveHelper driveHelper; // "Backend" interface
+  final formKey = GlobalKey<FormState>();
 
   // Runs when the program starts
   @override
@@ -159,11 +160,12 @@ class _HomePageState extends State<HomePage> {
                                           color: Colors.blue,
                                         ),
                                     recognizer: TapGestureRecognizer()
-                                      ..onTap = () async {
-                                        launch(
+                                      ..onTap = () async => launch(
                                           "https://www.github.com/theRookieCoder/bp_logger",
-                                        );
-                                      },
+                                          forceWebView: true,
+                                          enableJavaScript: true,
+                                          statusBarBrightness:
+                                              Theme.of(context).brightness),
                                   ),
                                   TextSpan(
                                     text: " under the AGPL 3.0 License",
@@ -184,84 +186,115 @@ class _HomePageState extends State<HomePage> {
         ),
       ),
       body: Center(
-        child: Column(
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            Row(
-              mainAxisAlignment: MainAxisAlignment.center,
-              children: <Widget>[
-                // Invisible container to center the text
-                Container(width: 50),
-                // For displaying the date
-                Padding(
-                  padding: const EdgeInsets.all(5.0),
-                  child: Text(
-                    DateFormat("d/M/y").format(date),
-                    style: Theme.of(context).textTheme.headline3,
+        child: Form(
+          key: formKey,
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: <Widget>[
+              Row(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: <Widget>[
+                  // Invisible container to center the text
+                  Container(width: 50),
+                  // For displaying the date
+                  Padding(
+                    padding: const EdgeInsets.all(5.0),
+                    child: Text(
+                      DateFormat("d/M/y").format(date),
+                      style: Theme.of(context).textTheme.headline3,
+                    ),
                   ),
-                ),
-                // For changing the date
-                IconButton(
-                  icon: Icon(Icons.edit),
-                  iconSize: 30.0,
-                  tooltip: "Edit date",
-                  onPressed: () async {
-                    await _selectDate(context);
+                  // For changing the date
+                  IconButton(
+                    icon: Icon(Icons.edit),
+                    iconSize: 30.0,
+                    tooltip: "Edit date",
+                    onPressed: () async {
+                      await _selectDate(context);
+                    },
+                  ),
+                ],
+              ),
+              Padding(
+                padding: const EdgeInsets.fromLTRB(20.0, 5.0, 20.0, 5.0),
+                child: TextFormField(
+                  validator: (value) {
+                    late int val;
+                    if (value != "" && value != null) {
+                      val = int.parse(value);
+                    } else {
+                      return "Enter a value";
+                    }
+                    if (val > 120) {
+                      return "Too high";
+                    } else if (val < 60) {
+                      return "Too low";
+                    } else {
+                      return null;
+                    }
                   },
+                  controller: diastolicTEC,
+                  style: TextStyle(
+                    fontSize: 25.0,
+                  ),
+                  decoration: InputDecoration(
+                    border: new OutlineInputBorder(
+                      borderSide: new BorderSide(),
+                    ),
+                    labelText: "Diastolic",
+                  ),
+                  // Only digits, everything else gets rejected even if typed in
+                  inputFormatters: [FilteringTextInputFormatter.digitsOnly],
+                  keyboardType: TextInputType.number, // Number only keyboard
                 ),
-              ],
-            ),
-            // For entering the diastolic value
-            Padding(
-              padding: const EdgeInsets.fromLTRB(20.0, 5.0, 20.0, 5.0),
-              child: TextField(
-                maxLength: 3,
-                controller: textFieldController1,
-                style: TextStyle(
-                  fontSize: 25.0,
-                ),
-                decoration: InputDecoration(
-                  counterText: "",
-                  border: new OutlineInputBorder(borderSide: new BorderSide()),
-                  labelText: "Diastolic",
-                ),
-                // Only digits, everything else gets rejected even if typed in
-                inputFormatters: [FilteringTextInputFormatter.digitsOnly],
-                keyboardType: TextInputType.number, // Number only keyboard
               ),
-            ),
-            // For entering the systolic value
-            Padding(
-              padding: const EdgeInsets.fromLTRB(20.0, 5.0, 20.0, 5.0),
-              child: TextField(
-                maxLength: 3,
-                controller: textFieldController2,
-                style: TextStyle(
-                  fontSize: 25.0,
-                ),
-                decoration: InputDecoration(
-                  counterText: "",
-                  border: new OutlineInputBorder(borderSide: new BorderSide()),
-                  labelText: "Systolic",
+              Padding(
+                padding: const EdgeInsets.fromLTRB(20.0, 5.0, 20.0, 5.0),
+                child: TextFormField(
+                  validator: (value) {
+                    late int val;
+                    if (value != "" && value != null) {
+                      val = int.parse(value);
+                    } else {
+                      return "Enter a value";
+                    }
+                    if (val > 200) {
+                      return "Too high";
+                    } else if (val < 100) {
+                      return "Too low";
+                    } else {
+                      return null;
+                    }
+                  },
+                  controller: systolicTEC,
+                  style: TextStyle(
+                    fontSize: 25.0,
+                  ),
+                  decoration: InputDecoration(
+                    border: new OutlineInputBorder(
+                      borderSide: new BorderSide(),
+                    ),
+                    labelText: "Systolic",
+                  ),
+                  // Only digits everything else is rejected even of typed in
+                  inputFormatters: [FilteringTextInputFormatter.digitsOnly],
+                  keyboardType: TextInputType.number, // Number only keyboard
                 ),
-                // Only digits everything else is rejected even of typed in
-                inputFormatters: [FilteringTextInputFormatter.digitsOnly],
-                keyboardType: TextInputType.number, // Number only keyboard
               ),
-            ),
-          ],
+            ],
+          ),
         ),
       ),
       floatingActionButton: FloatingActionButton.extended(
         icon: Icon(Icons.storage),
         label: Text("ADD TO FILE"),
         onPressed: () async {
-          // Get values from TextFieldControllers
-          String diastolic = textFieldController1.text;
-          String systolic = textFieldController2.text;
-
-          // Don"t run if values are not filled in
-          if (diastolic != "" && systolic != "") {
+          // Don"t run if values are not correct
+          if (formKey.currentState != null &&
+              formKey.currentState!.validate()) {
+            // Get values from TextFieldControllers
+            String diastolic = diastolicTEC.text;
+            String systolic = systolicTEC.text;
             // Dismiss keyboard once button is pressed
             FocusScopeNode currentFocus = FocusScope.of(context);
             if (!currentFocus.hasPrimaryFocus) {
@@ -283,8 +316,8 @@ class _HomePageState extends State<HomePage> {
               barrierDismissible: false,
             );
 
-            textFieldController1.clear();
-            textFieldController2.clear();
+            diastolicTEC.clear();
+            systolicTEC.clear();
           }
         },
       ),
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..1592221
--- /dev/null
+++ b/makefile
@@ -0,0 +1,24 @@
+.PHONY: all build clean
+
+debug:
+	flutter run
+
+test:
+	flutter run --release
+
+clean:
+	flutter clean
+	rm -vrf Payload
+	rm *.apk
+	rm *.ipa
+
+build:
+	flutter pub get
+	flutter build apk
+	flutter build ios
+	cd build
+	mkdir -p Payload
+	cp -R ~/flutter_projects/bp_logger/build/ios/iphoneos/Runner.app "Payload/BP Logger.app"
+	zip "bp_logger_v${VERSION}.ipa" Payload
+	mv ~/flutter_projects/bp_logger/build/app/outputs/flutter-apk/app-release.apk bp_logger_v${VERSION}.apk
+	gh release create v${VERSION} "bp_logger_v${VERSION}.ipa" "bp_logger_v${VERSION}.apk" -t "BP Logger ${VERSION}" -n "Native builds for sideloading"
diff --git a/pubspec.lock b/pubspec.lock
index bbab68d..34ddccb 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -21,7 +21,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.5.0"
+    version: "2.7.0"
   characters:
     dependency: transitive
     description:
@@ -77,7 +77,7 @@ packages:
       name: file
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.1.0"
+    version: "6.1.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -101,14 +101,14 @@ packages:
       name: google_fonts
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0"
   google_sign_in:
     dependency: transitive
     description:
       name: google_sign_in
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.0.2"
+    version: "5.0.3"
   google_sign_in_platform_interface:
     dependency: transitive
     description:
@@ -302,7 +302,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0"
+    version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
@@ -337,7 +337,7 @@ packages:
       name: url_launcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.0.3"
+    version: "6.0.4"
   url_launcher_linux:
     dependency: transitive
     description:
@@ -358,7 +358,7 @@ packages:
       name: url_launcher_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.2"
+    version: "2.0.3"
   url_launcher_web:
     dependency: transitive
     description:
@@ -386,7 +386,7 @@ packages:
       name: win32
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.5"
+    version: "2.1.1"
   xdg_directories:
     dependency: transitive
     description:
@@ -395,5 +395,5 @@ packages:
     source: hosted
     version: "0.2.0"
 sdks:
-  dart: ">=2.12.0 <3.0.0"
+  dart: ">=2.13.0 <3.0.0"
   flutter: ">=1.22.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 4f786bf..2f3c0e5 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,10 +4,10 @@ repository: https://www.github.com/theRookieCoder/bp_logger
 publish_to: "none"
 
 # The following defines the version and build number for your application.
-version: 1.3.1
+version: 1.3.2
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.13.0 <3.0.0"
 
 dependencies:
   flutter: