diff --git a/app/android/app/build.gradle.kts b/app/android/app/build.gradle.kts
index a34e7a4..14792d5 100644
--- a/app/android/app/build.gradle.kts
+++ b/app/android/app/build.gradle.kts
@@ -1,3 +1,18 @@
+/*
+ * Copyright © 2025-26 l5yth & contributors
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 plugins {
     id("com.android.application")
     id("kotlin-android")
diff --git a/app/android/app/src/main/kotlin/net/potatomesh/reader/MainActivity.kt b/app/android/app/src/main/kotlin/net/potatomesh/reader/MainActivity.kt
index 69dff6b..fd83868 100644
--- a/app/android/app/src/main/kotlin/net/potatomesh/reader/MainActivity.kt
+++ b/app/android/app/src/main/kotlin/net/potatomesh/reader/MainActivity.kt
@@ -1,3 +1,16 @@
+// Copyright © 2025-26 l5yth & contributors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package net.potatomesh.reader
 
 import io.flutter.embedding.android.FlutterActivity
diff --git a/app/android/build.gradle.kts b/app/android/build.gradle.kts
index dbee657..8dedf8b 100644
--- a/app/android/build.gradle.kts
+++ b/app/android/build.gradle.kts
@@ -1,3 +1,18 @@
+/*
+ * Copyright © 2025-26 l5yth & contributors
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 allprojects {
     repositories {
         google()
diff --git a/app/android/settings.gradle.kts b/app/android/settings.gradle.kts
index ca7fe06..822b6d7 100644
--- a/app/android/settings.gradle.kts
+++ b/app/android/settings.gradle.kts
@@ -1,3 +1,18 @@
+/*
+ * Copyright © 2025-26 l5yth & contributors
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 pluginManagement {
     val flutterSdkPath =
         run {
diff --git a/app/debug.sh b/app/debug.sh
index 8c9d1bf..8db1136 100755
--- a/app/debug.sh
+++ b/app/debug.sh
@@ -1,5 +1,18 @@
 #!/usr/bin/env bash
 
+# Copyright © 2025-26 l5yth & contributors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 export GIT_TAG="$(git describe --tags --abbrev=0)"
 export GIT_COMMITS="$(git rev-list --count ${GIT_TAG}..HEAD)"
 export GIT_SHA="$(git rev-parse --short=9 HEAD)"
@@ -12,4 +25,3 @@ flutter run \
   --dart-define=GIT_SHA="${GIT_SHA}" \
   --dart-define=GIT_DIRTY="${GIT_DIRTY}" \
   --device-id 38151FDJH00D4C
-
diff --git a/app/ios/Runner/AppDelegate.swift b/app/ios/Runner/AppDelegate.swift
index 6266644..bfd25c1 100644
--- a/app/ios/Runner/AppDelegate.swift
+++ b/app/ios/Runner/AppDelegate.swift
@@ -1,3 +1,16 @@
+// Copyright © 2025-26 l5yth & contributors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 import Flutter
 import UIKit
 
diff --git a/app/ios/Runner/Runner-Bridging-Header.h b/app/ios/Runner/Runner-Bridging-Header.h
index 308a2a5..277595c 100644
--- a/app/ios/Runner/Runner-Bridging-Header.h
+++ b/app/ios/Runner/Runner-Bridging-Header.h
@@ -1 +1,14 @@
+// Copyright © 2025-26 l5yth & contributors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #import "GeneratedPluginRegistrant.h"
diff --git a/app/ios/RunnerTests/RunnerTests.swift b/app/ios/RunnerTests/RunnerTests.swift
index 86a7c3b..4d2368b 100644
--- a/app/ios/RunnerTests/RunnerTests.swift
+++ b/app/ios/RunnerTests/RunnerTests.swift
@@ -1,3 +1,16 @@
+// Copyright © 2025-26 l5yth & contributors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 import Flutter
 import UIKit
 import XCTest
diff --git a/app/release.sh b/app/release.sh
index 7c1a568..93f23c9 100755
--- a/app/release.sh
+++ b/app/release.sh
@@ -1,5 +1,18 @@
 #!/usr/bin/env bash
 
+# Copyright © 2025-26 l5yth & contributors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -euo pipefail
 
 export GIT_TAG="$(git describe --tags --abbrev=0)"
@@ -27,4 +40,3 @@ fi
 export APK_DIR="build/app/outputs/flutter-apk"
 mv -v "${APK_DIR}/app-release.apk" "${APK_DIR}/potatomesh-reader-android-${TAG_NAME}.apk"
 (cd "${APK_DIR}" && sha256sum "potatomesh-reader-android-${TAG_NAME}.apk" > "potatomesh-reader-android-${TAG_NAME}.apk.sha256sum")
-
diff --git a/app/test/widget_test.dart b/app/test/widget_test.dart
index e6d3fbe..63cbc5b 100644
--- a/app/test/widget_test.dart
+++ b/app/test/widget_test.dart
@@ -1,3 +1,16 @@
+// Copyright © 2025-26 l5yth & contributors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // This is a basic Flutter widget test.
 //
 // To perform an interaction with a widget in your test, use the WidgetTester
diff --git a/tests/cypher.rb b/tests/cypher.rb
index 45dfed6..286d54d 100644
--- a/tests/cypher.rb
+++ b/tests/cypher.rb
@@ -1,3 +1,16 @@
+# Copyright © 2025-26 l5yth & contributors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 require "base64"
 require "meshtastic"
 require "openssl"
diff --git a/tests/rainbow.rb b/tests/rainbow.rb
index fe6a340..ee85699 100644
--- a/tests/rainbow.rb
+++ b/tests/rainbow.rb
@@ -1,6 +1,19 @@
 #!/usr/bin/env ruby
 # frozen_string_literal: true
 
+# Copyright © 2025-26 l5yth & contributors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 require "base64"
 require "json"
 require "csv"