Yes, the license is per app developer and you can create as many projects as you like with the extension
You can search the internet for free web hosts, but frequently they only offer a webpage but not accessing data in a MySQL database
EDIT: see for example Can anybody help me with this? Web Component not sending data to php - #3 by Juan_Antonio
Also your data is static and does not change, isn't it? So no online database would be required... also a local solution as the local sqlite database does not require internet access and could be faster than querying an online database because you can save the transfer time from the app to the database and back again
Taifun