Updated on 2026-08-14

app/build.gradle

@@ -57,6 +57,7 @@ dependencies {
     implementation 'com.scottyab:rootbeer-lib:0.0.6'
     implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
     implementation 'com.squareup.retrofit2:retrofit:2.4.0'
+    implementation 'com.squareup.okhttp3:logging-interceptor:3.4.1'
     implementation 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0'
     implementation 'com.skyfishjy.ripplebackground:library:1.0.1'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"

app/src/main/java/com/tangem/data/network/Server.java

@@ -1,5 +1,7 @@
 package com.tangem.data.network;
 
+import static com.tangem.data.network.Server.ApiTangem.URL_TANGEM;
+
 public class Server {
 
     /**
@@ -14,6 +16,14 @@ public class Server {
         }
     }
 
+    public static class ApiUpdateVersion {
+        public static final String URL_UPDATE_VERSION = ServerURL.API_UPDATE_VERSION;
+
+        public static class Method {
+            public static final String LAST_VERSION = URL_UPDATE_VERSION +"TangemCash/tangem-binaries/master/apk-version.txt";
+        }
+    }
+
     /**
      * https://coinmarketcap.com/api/
      */

app/src/main/java/com/tangem/data/network/ServerApiHelper.java

@@ -25,6 +25,7 @@ import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.io.BufferedReader;
+import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
@@ -41,6 +42,9 @@ import io.reactivex.Observable;
 import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.observers.DefaultObserver;
 import io.reactivex.schedulers.Schedulers;
+import okhttp3.OkHttpClient;
+import okhttp3.ResponseBody;
+import okhttp3.logging.HttpLoggingInterceptor;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
@@ -301,4 +305,58 @@ public class ServerApiHelper {
         return "Electrum, " + host + ":" + String.valueOf(port);
     }
 
+    /**
+     * HTTP
+     * Last version request from GitHub
+     */
+    private LastVersionListener lastVersionListener;
+
+    public interface LastVersionListener {
+        void onLastVersion(String lastVersion);
+    }
+
+    public void setLastVersionListener(LastVersionListener listener) {
+        lastVersionListener = listener;
+    }
+
+    public void requestLastVersion() {
+
+        HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
+        logging.setLevel(HttpLoggingInterceptor.Level.BODY);
+
+        OkHttpClient httpClient = new OkHttpClient.Builder().
+                addInterceptor(logging).
+//        addInterceptor(new AuthorizationInterceptor()).
+        build();
+        Retrofit retrofit = new Retrofit.Builder()
+                .baseUrl(Server.ApiUpdateVersion.URL_UPDATE_VERSION)
+                .addConverterFactory(GsonConverterFactory.create())
+                .client(httpClient)
+                .build();
+
+        UpdateVersionApi updateVersionApi = retrofit.create(UpdateVersionApi.class);
+
+        Call<ResponseBody> call = updateVersionApi.getLastVersion();
+        call.enqueue(new Callback<ResponseBody>() {
+            @Override
+            public void onResponse(@NonNull Call<ResponseBody> call, @NonNull Response<ResponseBody> response) {
+                Log.i(TAG, "LastVersion onResponse " + response.code());
+                if (response.code() == 200) {
+                    String stringResponse;
+                    try {
+                        stringResponse = response.body().string();
+                        lastVersionListener.onLastVersion(stringResponse);
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+
+            @Override
+            public void onFailure(@NonNull Call<ResponseBody> call, @NonNull Throwable t) {
+                Log.e(TAG, "LastVersion onFailure " + t.getMessage());
+            }
+        });
+    }
+
 }

app/src/main/java/com/tangem/data/network/ServerURL.java

@@ -4,4 +4,5 @@ public class ServerURL {
     public static final String API_TANGEM = "https://verify.tangem.com/";
     public static final String API_COINMARKET = "https://api.coinmarketcap.com/";
     public static final String API_INFURA = "https://mainnet.infura.io/";
+    public static final String API_UPDATE_VERSION = "https://raw.githubusercontent.com/";
 }

app/src/main/java/com/tangem/data/network/UpdateVersionApi.java

@@ -0,0 +1,16 @@
+package com.tangem.data.network;
+
+import com.tangem.data.network.model.CardVerifyBody;
+import com.tangem.data.network.model.CardVerifyResponse;
+
+import okhttp3.ResponseBody;
+import retrofit2.Call;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.POST;
+
+public interface UpdateVersionApi {
+    @GET(Server.ApiUpdateVersion.Method.LAST_VERSION)
+    Call<ResponseBody> getLastVersion();
+}

app/src/main/java/com/tangem/presentation/activity/MainActivity.kt

@@ -19,6 +19,7 @@ import android.view.animation.Transformation
 import android.widget.RelativeLayout
 import android.widget.Toast
 import com.scottyab.rootbeer.RootBeer
+import com.tangem.data.network.ServerApiHelper
 import com.tangem.data.nfc.ReadCardInfoTask
 import com.tangem.domain.cardReader.CardProtocol
 import com.tangem.domain.cardReader.FW
@@ -147,6 +148,13 @@ class MainActivity : AppCompatActivity(), NfcAdapter.ReaderCallback, CardProtoco
                 false
             }
         }
+
+        val apiHelper = ServerApiHelper()
+        apiHelper.setLastVersionListener {
+            response->
+            if(response!! != BuildConfig.VERSION_NAME) Toast.makeText(this, "There is a new application version: "+response.toString(),Toast.LENGTH_LONG).show()
+        }
+        apiHelper.requestLastVersion()
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {