Of course, you can set up weather alert. Look at this tutorial to learn what you can do and how to do it :
Android does not send the package name with requests. Or, to be more precise, it sends, but it depends on a version. So you need to add a domain it runs on. But read carefully Terms & Conditions, Windy API is allowed for mobile app only under certain conditions.
As explained by @idefix37, there is no way for Windy to draw fronts. There are websites where fronts are drawn tha you can use.
Having said that, there are alternatives to visualise fronts that you can use with Windy. One way is to use the humidity map at 700 hPa. A front is materialised at this altitude with a humidity above 90%. Another way, combined with the humidity map is the temperature map at 850hPa. Ideally we should use the potential temperature (thêta’w) but still it can give you an idea of the temperatures differences between air massa so in fact discontinuity which is the sign of a front.
Again, those 2 maps don’t replace fronts map but it works quite well
It is not possible to download weather forecast data, future or past data.
Windy Premium grants you access to 1-hour forecast and in following weeks weather forecast updates 4 times a day instead of 2.
These companies provide forecast data for your location. Once you tap 'Compare' you will be able to get easily to their websites since their logo is linked.