A simple service monitor app based-on Cordova (Phonegap). If you have your own website/web service/web app, you can use this app to monitor server availability. It notifies you when server returns unusual status code.

• Cross-platform (aim for Firefox OS, Android, and iOS).
• Notification on status bar when service down.
• Simple and elegant user interface.
• Add/modify/remove service profile.
• Check service status periodically in the background.
• View all check logs, loaded page by page.
• Cleanup old logs everyday, keep latest 1200 logs.
• Safe and secure, all data stores locally.

• Firefox OS: works fine, tested on unagi (b2g 1.4) and flame (b2g 2.1).
• Open Web App for Android: works fine, tested on Samsung I9100, require Firefox for Android installed.
• Open Web App for Desktop: works fine, tested on OSX 10.9, Ubuntu 12, Windows 7, require Firefox installed.
• Android: works fine on emulator 4.4, chromium-based WebView is required for IndexedDB.
• iOS: not working, waiting for IndexedDB support on iOS safari 8.

• SerMon on Firefox marketplace
• SerMon on Google Play
• SerMon on iTunes AppStore (Coming soon...)

• git
• npm (node.js)
• cordova 3.5
• Android SDK for Firefox OS and Android devices
• mozilla-apk-cli for Open WebApp on android.
• iOS SDK for iOS devices/simulator
• ios-sim for deployment on iOS simulator
• ios-deploy for deployment on iOS devices (plus your developer program account of course)

$ git clone https://github.com/yshlin/SerMon
$ cd SerMon
$ ./init.sh

• All source code lies in the www folder.
• For platform-specific files, put them in the merges folder.

on Firefox OS:

$ cordova build firefoxos
$ cordova run firefoxos

Open Web App for Android:

$ mozilla-apk-cli ./platforms/firefoxos/www/ sermon.apk
$ adb install sermon.apk

on Android:

$ cordova build android 
$ cordova run android

on iOS simulator:

$ cordova build ios 
$ cordova run ios --emulator

on iOS device:

$ cordova build ios 
$ cordova run ios

Q: Why the log always shows 'No connection'?
A: Pleas check your network connection, and make sure your server supports HTTP 'HEAD' request, sometimes it works for certain path.

Q: Why it didn't check in the background?
A: You must manually open the app again after system restart, and make sure you (or the GC) didn't kill the app in the recent app list.

Q: Why it always shows 'Checked just now'?
A: The last check time is updated when app resumes, so you can check updates by turning the screen off and on, or by switching the app off and back.

Q: My battery is low, how can I turn the background check off?
A: Just terminate the app from the recent app list.

• Cordova documentation
• Testing your native android app - Mozilla Hacks
• Using IndexedDB - MDN