diff --git a/android/src/main/java/io/invertase/firebase/RNFirebaseModule.java b/android/src/main/java/io/invertase/firebase/RNFirebaseModule.java
index 2b6efef5..c069683f 100644
--- a/android/src/main/java/io/invertase/firebase/RNFirebaseModule.java
+++ b/android/src/main/java/io/invertase/firebase/RNFirebaseModule.java
@@ -10,6 +10,7 @@ import java.util.HashMap;
 // react
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.Promise;
 import com.facebook.react.bridge.ReadableMap;
 import com.facebook.react.bridge.WritableMap;
 import com.facebook.react.bridge.LifecycleEventListener;
@@ -50,7 +51,7 @@ public class RNFirebaseModule extends ReactContextBaseJavaModule implements Life
   }
 
   @ReactMethod
-  public void initializeApp(String name, ReadableMap options, Callback callback) {
+  public void initializeApp(String appName, ReadableMap options, Callback callback) {
     FirebaseOptions.Builder builder = new FirebaseOptions.Builder();
 
     builder.setApplicationId(options.getString("appId"));
@@ -61,14 +62,28 @@ public class RNFirebaseModule extends ReactContextBaseJavaModule implements Life
     builder.setStorageBucket(options.getString("storageBucket"));
     // todo firebase sdk has no client id setter
 
-    FirebaseApp.initializeApp(getReactApplicationContext(), builder.build(), name);
+    FirebaseApp.initializeApp(getReactApplicationContext(), builder.build(), appName);
 
-    // todo expand on callback result
     WritableMap response = Arguments.createMap();
     response.putString("result", "success");
     callback.invoke(null, response);
   }
 
+  @ReactMethod
+  public void deleteApp(String appName, Promise promise) {
+    FirebaseApp firebaseApp = FirebaseApp.getInstance(appName);
+
+    if (firebaseApp == null) {
+      promise.resolve(null);
+    } else {
+      // todo ? not implemented on firebase sdk
+      promise.reject(
+        "app/delete-app-failed",
+        "Failed to delete app. The android Firebase SDK currently does not support this functionality"
+      );
+    }
+  }
+
   private WritableMap getPlayServicesStatus() {
     GoogleApiAvailability gapi = GoogleApiAvailability.getInstance();
     final int status = gapi.isGooglePlayServicesAvailable(getReactApplicationContext());
@@ -117,8 +132,8 @@ public class RNFirebaseModule extends ReactContextBaseJavaModule implements Life
 
       appProps.put("name", appName);
       appProps.put("apiKey", appOptions.getApiKey());
-      appProps.put("applicationId", appOptions.getApplicationId());
-      appProps.put("databaseUrl", appOptions.getDatabaseUrl());
+      appProps.put("appId", appOptions.getApplicationId());
+      appProps.put("databaseURL", appOptions.getDatabaseUrl());
       appProps.put("messagingSenderId", appOptions.getGcmSenderId());
       appProps.put("projectId", appOptions.getProjectId());
       appProps.put("storageBucket", appOptions.getStorageBucket());
diff --git a/ios/RNFirebase/RNFirebase.m b/ios/RNFirebase/RNFirebase.m
index 4089fe4d..55304956 100644
--- a/ios/RNFirebase/RNFirebase.m
+++ b/ios/RNFirebase/RNFirebase.m
@@ -21,14 +21,14 @@ RCT_EXPORT_MODULE(RNFirebase);
  * @return
  */
 RCT_EXPORT_METHOD(initializeApp:
-    (NSString *) name
+    (NSString *) appName
             options:
             (NSDictionary *) options
             callback:
             (RCTResponseSenderBlock) callback) {
 
     dispatch_sync(dispatch_get_main_queue(), ^{
-        FIRApp *existingApp = [FIRApp appNamed:name];
+        FIRApp *existingApp = [FIRApp appNamed:appName];
 
         if (!existingApp) {
             FIROptions *firOptions = [[FIROptions alloc] initWithGoogleAppID:[options valueForKey:@"appId"] GCMSenderID:[options valueForKey:@"messagingSenderId"]];
@@ -43,27 +43,57 @@ RCT_EXPORT_METHOD(initializeApp:
             firOptions.deepLinkURLScheme = [options valueForKey:@"deepLinkURLScheme"];
             firOptions.bundleID = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleIdentifier"];
 
-            [FIRApp configureWithName:name options:firOptions];
+            [FIRApp configureWithName:appName options:firOptions];
         }
 
-        // todo expand on callback result
         callback(@[[NSNull null], @{@"result": @"success"}]);
     });
 }
 
+/**
+ * Delete a firebase app
+ * @return
+ */
+RCT_EXPORT_METHOD(deleteApp:
+    (NSString *) appName
+            resolver:
+            (RCTPromiseResolveBlock) resolve
+            rejecter:
+            (RCTPromiseRejectBlock) reject) {
+
+    FIRApp *existingApp = [FIRApp appNamed:appName];
+
+    if (!existingApp) {
+        return resolve([NSNull null]);
+    }
+
+    [existingApp deleteApp:^(BOOL success) {
+        if (success) {
+            resolve([NSNull null]);
+        } else {
+            reject(@"app/delete-app-failed", @"Failed to delete the specified app.", nil);
+        }
+    }];
+
+}
+
+/**
+ * React native constant exports - exports native firebase apps mainly
+ * @return
+ */
 - (NSDictionary *)constantsToExport {
     NSMutableDictionary *constants = [NSMutableDictionary new];
     NSDictionary *firApps = [FIRApp allApps];
     NSMutableArray *appsArray = [NSMutableArray new];
 
     for (id key in firApps) {
-        NSMutableDictionary * appOptions = [NSMutableDictionary new];
+        NSMutableDictionary *appOptions = [NSMutableDictionary new];
         FIRApp *firApp = firApps[key];
         FIROptions *firOptions = [firApp options];
         appOptions[@"name"] = firApp.name;
         appOptions[@"apiKey"] = firOptions.APIKey;
-        appOptions[@"applicationId"] = firOptions.googleAppID;
-        appOptions[@"databaseUrl"] = firOptions.databaseURL;
+        appOptions[@"appId"] = firOptions.googleAppID;
+        appOptions[@"databaseURL"] = firOptions.databaseURL;
         appOptions[@"messagingSenderId"] = firOptions.GCMSenderID;
         appOptions[@"projectId"] = firOptions.projectID;
         appOptions[@"storageBucket"] = firOptions.storageBucket;
@@ -75,7 +105,6 @@ RCT_EXPORT_METHOD(initializeApp:
         appOptions[@"deepLinkUrlScheme"] = firOptions.deepLinkURLScheme;
 
         [appsArray addObject:appOptions];
-        NSLog(@"test");
     }
 
     constants[@"apps"] = appsArray;
diff --git a/lib/firebase-app.js b/lib/firebase-app.js
index 15516758..4ae40171 100644
--- a/lib/firebase-app.js
+++ b/lib/firebase-app.js
@@ -22,6 +22,18 @@ export default class FirebaseApp {
 
     // native ios/android to confirm initialized
     this._initialized = false;
+    this._nativeInitialized = false;
+
+    // modules
+    this.admob = this._staticsOrModuleInstance('admob', AdMobStatics, AdMob);
+    this.auth = this._staticsOrModuleInstance('auth', AuthStatics, Auth);
+    this.analytics = this._staticsOrModuleInstance('analytics', {}, Analytics);
+    this.config = this._staticsOrModuleInstance('config', {}, RemoteConfig);
+    this.crash = this._staticsOrModuleInstance('crash', {}, Crash);
+    this.database = this._staticsOrModuleInstance('database', DatabaseStatics, Database);
+    this.messaging = this._staticsOrModuleInstance('messaging', MessagingStatics, Messaging);
+    this.perf = this._staticsOrModuleInstance('perf', {}, Performance);
+    this.storage = this._staticsOrModuleInstance('storage', StorageStatics, Storage);
   }
 
   /**
@@ -31,14 +43,13 @@ export default class FirebaseApp {
    */
   _initializeApp(native = false) {
     if (native) {
-      // for apps already initialized natively that we have info
-      // from RN constants
+      // for apps already initialized natively that
+      // we have info from RN constants
       this._initialized = true;
       this._nativeInitialized = true;
     } else {
       FirebaseCoreModule.initializeApp(this._name, this._options, (error, result) => {
         this._initialized = true;
-        this._nativeInitialized = false;
         INTERNALS.SharedEventEmitter.emit(`AppReady:${this._name}`, { error, result });
       });
     }
@@ -78,10 +89,14 @@ export default class FirebaseApp {
       );
     }
 
-    return Promise.resolve();
+    return FirebaseCoreModule.deleteApp(this._name);
   }
 
 
+  /**
+   *
+   * @return {*}
+   */
   onReady(): Promise {
     if (this._initialized) return Promise.resolve(this);
 
@@ -93,47 +108,6 @@ export default class FirebaseApp {
     });
   }
 
-  /*
-   *  MODULES
-   */
-
-  get admob() {
-    return this._staticsOrModuleInstance('admob', AdMobStatics, AdMob);
-  }
-
-  get auth() {
-    return this._staticsOrModuleInstance('auth', AuthStatics, Auth);
-  }
-
-  get analytics() {
-    return this._staticsOrModuleInstance('analytics', {}, Analytics);
-  }
-
-  get config() {
-    return this._staticsOrModuleInstance('config', {}, RemoteConfig);
-  }
-
-  get crash() {
-    return this._staticsOrModuleInstance('crash', {}, Crash);
-  }
-
-  get database() {
-    return this._staticsOrModuleInstance('database', DatabaseStatics, Database);
-  }
-
-  get messaging() {
-    return this._staticsOrModuleInstance('messaging', MessagingStatics, Messaging);
-  }
-
-  get perf() {
-    return this._staticsOrModuleInstance('perf', {}, Performance);
-  }
-
-  get storage() {
-    return this._staticsOrModuleInstance('storage', StorageStatics, Storage);
-  }
-
-
   /**
    *
    * @param name