diff --git a/app/package.json b/app/package.json
index 401b92f..f8aec81 100644
--- a/app/package.json
+++ b/app/package.json
@@ -10,8 +10,8 @@
     "e2e": "ionic-app-scripts build && protractor",
     "postinstall": "webdriver-manager update",
     "start": "ionic serve",
-    "test": "ng test",
-    "test-coverage": "ng test --code-coverage",
+    "test": "ng test --code-coverage",
+    "cov": "opn coverage/index.html",
     "test-ci": "ng test --watch=false --code-coverage && npm run e2e"
   },
   "dependencies": {
@@ -50,6 +50,7 @@
     "karma-coverage-istanbul-reporter": "1.2.1",
     "karma-jasmine": "1.1.0",
     "karma-jasmine-html-reporter": "0.2.2",
+    "opn-cli": "^3.1.0",
     "protractor": "5.1.2",
     "serve-static": "1.12.3",
     "ts-node": "3.0.4",
diff --git a/app/yarn.lock b/app/yarn.lock
index a889333..f03015a 100644
--- a/app/yarn.lock
+++ b/app/yarn.lock
@@ -2328,6 +2328,10 @@ file-loader@^0.10.0:
   dependencies:
     loader-utils "^1.0.2"
 
+file-type@^3.6.0:
+  version "3.9.0"
+  resolved "https://registry.yarnpkg.com/file-type/-/file-type-3.9.0.tgz#257a078384d1db8087bc449d107d52a52672b9e9"
+
 filename-regex@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/filename-regex/-/filename-regex-2.0.1.tgz#c1c4b9bee3e09725ddb106b75c1e301fe2f18b26"
@@ -2556,6 +2560,10 @@ get-stdin@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-4.0.1.tgz#b968c6b0a04384324902e8bf1a5df32579a450fe"
 
+get-stdin@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-5.0.1.tgz#122e161591e21ff4c52530305693f20e6393a398"
+
 getpass@^0.1.1:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.7.tgz#5eff8e3e684d569ae4cb2b1282604e8ba62149fa"
@@ -4282,7 +4290,17 @@ onetime@^2.0.0:
   dependencies:
     mimic-fn "^1.0.0"
 
-opn@4.0.2:
+opn-cli@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/opn-cli/-/opn-cli-3.1.0.tgz#f819ae6cae0b411bd0149b8560fe6c88adad20f8"
+  dependencies:
+    file-type "^3.6.0"
+    get-stdin "^5.0.1"
+    meow "^3.7.0"
+    opn "^4.0.0"
+    temp-write "^2.1.0"
+
+opn@4.0.2, opn@^4.0.0:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/opn/-/opn-4.0.2.tgz#7abc22e644dff63b0a96d5ab7f2790c0f01abc95"
   dependencies:
@@ -4463,7 +4481,7 @@ performance-now@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-0.2.0.tgz#33ef30c5c77d4ea21c5a53869d91b56d8f2555e5"
 
-pify@^2.0.0, pify@^2.3.0:
+pify@^2.0.0, pify@^2.2.0, pify@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
 
@@ -5970,6 +5988,17 @@ tar@^2.0.0, tar@^2.2.1:
     fstream "^1.0.2"
     inherits "2"
 
+temp-write@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/temp-write/-/temp-write-2.1.0.tgz#59890918e0ef09d548aaa342f4bd3409d8404e96"
+  dependencies:
+    graceful-fs "^4.1.2"
+    mkdirp "^0.5.0"
+    os-tmpdir "^1.0.0"
+    pify "^2.2.0"
+    pinkie-promise "^2.0.0"
+    uuid "^2.0.1"
+
 temp@0.8.3:
   version "0.8.3"
   resolved "https://registry.yarnpkg.com/temp/-/temp-0.8.3.tgz#e0c6bc4d26b903124410e4fed81103014dfc1f59"
@@ -6335,7 +6364,7 @@ utils-merge@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.0.tgz#0294fb922bb9375153541c4f7096231f287c8af8"
 
-uuid@^2.0.2:
+uuid@^2.0.1, uuid@^2.0.2:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-2.0.3.tgz#67e2e863797215530dff318e5bf9dcebfd47b21a"