diff --git a/app/build.gradle b/app/build.gradle
index e90852c3e..39930a73d 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -21,9 +21,12 @@ android {
         versionCode 81
         versionName "0.24.3"
         multiDexEnabled true
-        resValue "string", "app_name", "Wulkanowy"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
+
+        resValue "string", "app_name", "Wulkanowy"
+        buildConfigField "long", "BUILD_TIMESTAMP", String.valueOf(System.currentTimeMillis())
+
         manifestPlaceholders = [
                 firebase_enabled: project.hasProperty("enableFirebase")
         ]
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index eaef43694..ac8d3be4a 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -18,6 +18,18 @@
             <action android:name="android.intent.action.VIEW" />
             <data android:scheme="https" />
         </intent>
+        <intent>
+            <action android:name="android.intent.action.VIEW" />
+            <data android:scheme="mailto" />
+        </intent>
+        <intent>
+            <action android:name="android.intent.action.VIEW" />
+            <data android:scheme="tel" />
+        </intent>
+        <intent>
+            <action android:name="android.intent.action.VIEW" />
+            <data android:scheme="geo" />
+        </intent>
     </queries>
 
     <application
diff --git a/app/src/main/java/io/github/wulkanowy/ui/base/ErrorDialog.kt b/app/src/main/java/io/github/wulkanowy/ui/base/ErrorDialog.kt
index 341ae4590..f76614e1e 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/base/ErrorDialog.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/base/ErrorDialog.kt
@@ -57,7 +57,7 @@ class ErrorDialog : BaseDialogFragment<DialogErrorBinding>() {
         }
     }
 
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
         return DialogErrorBinding.inflate(inflater).apply { binding = this }.root
     }
 
@@ -114,11 +114,17 @@ class ErrorDialog : BaseDialogFragment<DialogErrorBinding>() {
             chooserTitle = getString(R.string.about_feedback),
             email = "wulkanowyinc@gmail.com",
             subject = "Zgłoszenie błędu",
-            body = requireContext().getString(R.string.about_feedback_template,
-                "${appInfo.systemManufacturer} ${appInfo.systemModel}", appInfo.systemVersion.toString(), appInfo.versionName
+            body = requireContext().getString(
+                R.string.about_feedback_template,
+                "${appInfo.systemManufacturer} ${appInfo.systemModel}",
+                appInfo.systemVersion.toString(),
+                "${appInfo.versionName}-${appInfo.buildFlavor}"
             ) + "\n" + content,
             onActivityNotFound = {
-                requireContext().openInternetBrowser("https://github.com/wulkanowy/wulkanowy/issues", ::showMessage)
+                requireContext().openInternetBrowser(
+                    "https://github.com/wulkanowy/wulkanowy/issues",
+                    ::showMessage
+                )
             }
         )
     }
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/about/AboutFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/about/AboutFragment.kt
index c616c31ee..1c613800d 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/about/AboutFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/about/AboutFragment.kt
@@ -18,6 +18,8 @@ import io.github.wulkanowy.utils.getCompatDrawable
 import io.github.wulkanowy.utils.openAppInMarket
 import io.github.wulkanowy.utils.openEmailClient
 import io.github.wulkanowy.utils.openInternetBrowser
+import io.github.wulkanowy.utils.toFormattedString
+import io.github.wulkanowy.utils.toLocalDateTime
 import javax.inject.Inject
 
 @AndroidEntryPoint
@@ -35,7 +37,9 @@ class AboutFragment : BaseFragment<FragmentAboutBinding>(R.layout.fragment_about
 
     override val versionRes: Triple<String, String, Drawable?>?
         get() = context?.run {
-            Triple(getString(R.string.about_version), "${appInfo.versionName} (${appInfo.versionCode})", getCompatDrawable(R.drawable.ic_all_about))
+            val buildTimestamp = appInfo.buildTimestamp.toLocalDateTime().toFormattedString("yyyy-MM-dd")
+            val versionSignature = "${appInfo.versionName}-${appInfo.buildFlavor} (${appInfo.versionCode}), $buildTimestamp"
+            Triple(getString(R.string.about_version), versionSignature, getCompatDrawable(R.drawable.ic_all_about))
         }
 
     override val creatorsRes: Triple<String, String, Drawable?>?
@@ -135,11 +139,17 @@ class AboutFragment : BaseFragment<FragmentAboutBinding>(R.layout.fragment_about
             chooserTitle = getString(R.string.about_feedback),
             email = "wulkanowyinc@gmail.com",
             subject = "Zgłoszenie błędu",
-            body = getString(R.string.about_feedback_template,
-                "${appInfo.systemManufacturer} ${appInfo.systemModel}", appInfo.systemVersion.toString(), appInfo.versionName
+            body = getString(
+                R.string.about_feedback_template,
+                "${appInfo.systemManufacturer} ${appInfo.systemModel}",
+                appInfo.systemVersion.toString(),
+                "${appInfo.versionName}-${appInfo.buildFlavor}"
             ),
             onActivityNotFound = {
-                requireContext().openInternetBrowser("https://github.com/wulkanowy/wulkanowy/issues", ::showMessage)
+                requireContext().openInternetBrowser(
+                    "https://github.com/wulkanowy/wulkanowy/issues",
+                    ::showMessage
+                )
             }
         )
     }
diff --git a/app/src/main/java/io/github/wulkanowy/utils/AppInfo.kt b/app/src/main/java/io/github/wulkanowy/utils/AppInfo.kt
index 37a09e74b..82671a7f4 100644
--- a/app/src/main/java/io/github/wulkanowy/utils/AppInfo.kt
+++ b/app/src/main/java/io/github/wulkanowy/utils/AppInfo.kt
@@ -4,7 +4,9 @@ import android.content.res.Resources
 import android.os.Build.MANUFACTURER
 import android.os.Build.MODEL
 import android.os.Build.VERSION.SDK_INT
+import io.github.wulkanowy.BuildConfig.BUILD_TIMESTAMP
 import io.github.wulkanowy.BuildConfig.DEBUG
+import io.github.wulkanowy.BuildConfig.FLAVOR
 import io.github.wulkanowy.BuildConfig.VERSION_CODE
 import io.github.wulkanowy.BuildConfig.VERSION_NAME
 import javax.inject.Inject
@@ -17,6 +19,10 @@ open class AppInfo @Inject constructor() {
 
     open val versionCode get() = VERSION_CODE
 
+    open val buildTimestamp get() = BUILD_TIMESTAMP
+
+    open val buildFlavor get() = FLAVOR
+
     open val versionName get() = VERSION_NAME
 
     open val systemVersion get() = SDK_INT