diff --git a/app/build.gradle b/app/build.gradle
index 524c7af381..e37c577e97 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -9,9 +9,17 @@ buildscript {
         classpath 'com.dicedmelon.gradle:jacoco-android:0.1.2'
     }
 }
-apply plugin: 'com.android.application'
-apply plugin: 'io.fabric'
-apply plugin: 'jacoco-android'
+apply plugin: "com.android.application"
+apply plugin: "io.fabric"
+apply plugin: "jacoco-android"
+
+ext {
+    supportLibraryVersion = "23.4.0"
+    ormLiteVersion = "4.46"
+    powermockVersion = "1.7.3"
+    dexmakerVersion = "1.2"
+}
+
 
 repositories {
     maven { url 'https://maven.fabric.io/public' }
@@ -152,53 +160,55 @@ dependencies {
     wearApp project(':wear')
 
     compile fileTree(include: ['*.jar'], dir: 'libs')
-    compile('com.crashlytics.sdk.android:crashlytics:2.6.7@aar') {
+    compile("com.crashlytics.sdk.android:crashlytics:2.6.7@aar") {
         transitive = true;
     }
-    compile('com.crashlytics.sdk.android:answers:1.3.12@aar') {
+    compile("com.crashlytics.sdk.android:answers:1.3.12@aar") {
         transitive = true;
     }
 
-    compile 'com.android.support:appcompat-v7:23.4.0'
-    compile 'com.android.support:support-v4:23.4.0'
-    compile 'com.android.support:cardview-v7:23.4.0'
-    compile 'com.android.support:recyclerview-v7:23.4.0'
-    compile 'com.android.support:gridlayout-v7:23.4.0'
-    compile "com.android.support:design:23.4.0"
-    compile "com.android.support:percent:23.4.0"
-    compile 'com.wdullaer:materialdatetimepicker:2.3.0'
-    compile 'com.squareup:otto:1.3.7'
-    compile 'com.j256.ormlite:ormlite-core:4.46'
-    compile 'com.j256.ormlite:ormlite-android:4.46'
-    compile('com.github.tony19:logback-android-classic:1.1.1-6') {
-        exclude group: 'com.google.android', module: 'android'
+    compile "com.android.support:appcompat-v7:${supportLibraryVersion}"
+    compile "com.android.support:support-v4:${supportLibraryVersion}"
+    compile "com.android.support:cardview-v7:${supportLibraryVersion}"
+    compile "com.android.support:recyclerview-v7:${supportLibraryVersion}"
+    compile "com.android.support:gridlayout-v7:${supportLibraryVersion}"
+    compile "com.android.support:design:${supportLibraryVersion}"
+    compile "com.android.support:percent:${supportLibraryVersion}"
+    compile "com.wdullaer:materialdatetimepicker:2.3.0"
+    compile "com.squareup:otto:1.3.7"
+    compile "com.j256.ormlite:ormlite-core:${ormLiteVersion}"
+    compile "com.j256.ormlite:ormlite-android:${ormLiteVersion}"
+    compile("com.github.tony19:logback-android-classic:1.1.1-6") {
+        exclude group: "com.google.android", module: "android"
     }
-    compile 'org.apache.commons:commons-lang3:3.6'
-    compile 'org.slf4j:slf4j-api:1.7.12'
-    compile 'com.jjoe64:graphview:4.0.1'
-    compile 'com.joanzapata.iconify:android-iconify-fontawesome:2.1.1'
-    compile 'com.google.android.gms:play-services-wearable:7.5.0'
-    compile 'junit:junit:4.12'
-    testCompile 'org.json:json:20140107'
-    testCompile 'org.mockito:mockito-core:2.7.22'
-    testCompile 'org.powermock:powermock-api-mockito2:1.7.3'
-    testCompile 'org.powermock:powermock-module-junit4-rule-agent:1.7.3'
-    testCompile 'org.powermock:powermock-module-junit4-rule:1.7.3'
-    testCompile 'org.powermock:powermock-module-junit4:1.7.3'
-    androidTestCompile 'org.mockito:mockito-core:2.7.22'
-    androidTestCompile 'com.google.dexmaker:dexmaker:1.2'
-    androidTestCompile 'com.google.dexmaker:dexmaker-mockito:1.2'
-    compile(name: 'android-edittext-validator-v1.3.4-mod', ext: 'aar')
-    compile('com.google.android:flexbox:0.3.0') {
-        exclude group: 'com.android.support'
+    compile "org.apache.commons:commons-lang3:3.6"
+    compile "org.slf4j:slf4j-api:1.7.12"
+    compile "com.jjoe64:graphview:4.0.1"
+    compile "com.joanzapata.iconify:android-iconify-fontawesome:2.1.1"
+    compile "com.google.android.gms:play-services-wearable:7.5.0"
+    compile(name: "android-edittext-validator-v1.3.4-mod", ext: "aar")
+    compile("com.google.android:flexbox:0.3.0") {
+        exclude group: "com.android.support"
     }
-    compile('io.socket:socket.io-client:0.8.3') {
+    compile("io.socket:socket.io-client:0.8.3") {
         // excluding org.json which is provided by Android
-        exclude group: 'org.json', module: 'json'
+        exclude group: "org.json", module: "json"
     }
-    compile 'com.google.code.gson:gson:2.7'
-    compile 'com.google.guava:guava:20.0'
+    compile "com.google.code.gson:gson:2.7"
+    compile "com.google.guava:guava:20.0"
 
-    compile 'net.danlew:android.joda:2.9.9.1'
-    testCompile 'joda-time:joda-time:2.9.4.2'
+    compile "net.danlew:android.joda:2.9.9.1"
+
+    testCompile "junit:junit:4.12"
+    testCompile "org.json:json:20140107"
+    testCompile "org.mockito:mockito-core:2.7.22"
+    testCompile "org.powermock:powermock-api-mockito2:${powermockVersion}"
+    testCompile "org.powermock:powermock-module-junit4-rule-agent:${powermockVersion}"
+    testCompile "org.powermock:powermock-module-junit4-rule:${powermockVersion}"
+    testCompile "org.powermock:powermock-module-junit4:${powermockVersion}"
+    testCompile "joda-time:joda-time:2.9.4.2"
+
+    androidTestCompile "org.mockito:mockito-core:2.7.22"
+    androidTestCompile "com.google.dexmaker:dexmaker:${dexmakerVersion}"
+    androidTestCompile "com.google.dexmaker:dexmaker-mockito:${dexmakerVersion}"
 }
diff --git a/wear/build.gradle b/wear/build.gradle
index 682577fc8e..a28a5cc5cd 100644
--- a/wear/build.gradle
+++ b/wear/build.gradle
@@ -1,5 +1,10 @@
 apply plugin: 'com.android.application'
 
+ext {
+    supportLibraryVersion = "23.0.1"
+    wearableVersion = "2.0.1"    
+}
+
 def generateGitBuild = { ->
 
     StringBuilder stringBuilder = new StringBuilder();
@@ -56,12 +61,12 @@ allprojects {
 
 dependencies {
     compile fileTree(include: ['*.jar'], dir: 'libs')
-    //compile 'com.ustwo.android:clockwise-wearable:1.0.2'
-    provided 'com.google.android.wearable:wearable:2.0.1'
-    compile 'com.google.android.support:wearable:2.0.1'
-    compile 'com.google.android.gms:play-services-wearable:7.3.0'
-    compile files('libs/hellocharts-library-1.5.5.jar')
-    compile(name:'ustwo-clockwise-debug', ext:'aar')
-    compile 'com.android.support:support-v4:23.0.1'
-    compile 'me.denley.wearpreferenceactivity:wearpreferenceactivity:0.5.0'
+    compile files("libs/hellocharts-library-1.5.5.jar")
+    //compile "com.ustwo.android:clockwise-wearable:1.0.2"
+    provided "com.google.android.wearable:wearable:${wearableVersion}"
+    compile "com.google.android.support:wearable:${wearableVersion}"
+    compile "com.google.android.gms:play-services-wearable:7.3.0"
+    compile(name:"ustwo-clockwise-debug", ext:"aar")
+    compile "com.android.support:support-v4:23.0.1"
+    compile "me.denley.wearpreferenceactivity:wearpreferenceactivity:0.5.0"
 }