The term has a long, disputed history though, and exported English can morph and grow according to local usage. I was going to post what you posted, but more than a simple Google search led me elsewhere!
This app has nothing to do with that licensing of taxi cabs or their history, or comply with the legal foundations of that naming convention. Just because there’s a long history and some dispute, adding to the confusion isn’t going to help, and will be grounds for a huge amount of legal problems if this app gets off the ground, and so is better nipped in the bud sooner rather than later.