Android apps - html5 + cocoonjs doesnt work?

i have a bunch of questions, so i hope you guys will give me a helping hand :)

I got a test app in HTML5 and used ludei/cocoonjs to get adroid app. I tried to run it on AVD from ADT on Android 2.3/3.0/4.2 and all i got was "Sorry, application suddenly stopped".

So here are my questions:

1. Is there any way to test android apps on PC machine using emulator?
2. Will my app work on mobiles although it doesnt work on emulator? I tested it on my friend mobile and was working fine..
3. What android version is ludei/cocoon compatible with?
4. I want to buy a cheap smartphone to test my application, but im not decided yet, cause i cant runn apps on emulator. Do you think LG Swift L3 (Android 2.3.6) is enough to test C2 + Ludei apps?

Thanks in advance for answers and sorry for my english, im not native speaker/writer.

1. An .apk generated on the cloud compiler of CocoonJS will not work on the emulator, you need a real device to test an .apk.
2. CocoonJS is compatible with Android 2.3 - 4.x.
3. LG Swift L3 is a very simple device to test a game, my advise is to try with a device with at least 512mb ram.

Regards