diff --git a/.github/workflows/android.yml b/.github/workflows/android.yml
new file mode 100644
index 0000000..3612118
--- /dev/null
+++ b/.github/workflows/android.yml
@@ -0,0 +1,26 @@
+name: Android CI
+
+# on:
+#   push:
+#     branches: [ main ]
+#   pull_request:
+#     branches: [ main ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: set up JDK 11
+      uses: actions/setup-java@v2
+      with:
+        java-version: '11'
+        distribution: 'temurin'
+        cache: gradle
+
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+    - name: Build with Gradle
+      run: ./gradlew build
diff --git a/.github/workflows/gradle-wrapper-validation.yml b/.github/workflows/gradle-wrapper-validation.yml
new file mode 100644
index 0000000..e4dd7f5
--- /dev/null
+++ b/.github/workflows/gradle-wrapper-validation.yml
@@ -0,0 +1,10 @@
+name: "Validate Gradle Wrapper"
+# on: [push, pull_request]
+
+jobs:
+  validation:
+    name: "Validation"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: gradle/wrapper-validation-action@v1
diff --git a/.github/workflows/super-linter.yml b/.github/workflows/super-linter.yml
new file mode 100644
index 0000000..ffa8a15
--- /dev/null
+++ b/.github/workflows/super-linter.yml
@@ -0,0 +1,29 @@
+# This workflow executes several linters on changed files based on languages used in your code base whenever
+# you push a code or open a pull request.
+#
+# You can adjust the behavior by modifying this file.
+# For more information, see:
+# https://github.com/github/super-linter
+name: Lint Code Base
+
+# on:
+#   push:
+#     branches: [ main ]
+#   pull_request:
+#     branches: [ main ]
+jobs:
+  run-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          # Full git history is needed to get a proper list of changed files within `super-linter`
+          fetch-depth: 0
+
+      - name: Lint Code Base
+        uses: github/super-linter@v4
+        env:
+          VALIDATE_ALL_CODEBASE: false
+          DEFAULT_BRANCH: main
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/data/icon.png b/data/icon.png
deleted file mode 100644
index b7e0249..0000000
Binary files a/data/icon.png and /dev/null differ
diff --git a/data/icon_appstore.png b/data/icon_appstore.png
deleted file mode 100644
index 271fb9f..0000000
Binary files a/data/icon_appstore.png and /dev/null differ
diff --git a/data/icon_appstore.svg b/data/icon_appstore.svg
deleted file mode 100644
index 5a25a11..0000000
--- a/data/icon_appstore.svg
+++ /dev/null
@@ -1,58 +0,0 @@
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