Android emulator is much slower than iPhone simulator. Because it is emulating arm on top of x86, while iPhone simulator just runs native x86 code. But the default settings for Android emulator is so slow that is barely useable. Luckly we can change some settings to make it reasonable fast.
- Open "Android SDK and AVD Manager", create a new AVD or edit an existing one.
- Click "New..." hardware to add a new hardware called "Device Ram Size"
- Change the value to 1024.
- Save the changes and launch the emulator.