Had no knowledge of React prior to starting so I gave myself the challenge to design, develop and deploy a web app (with React) as fast as possible . Took me about a month to complete and deploy Citii – a comparison tool that helps you compare and analyze the Cost of Living between cities worldwide – https://www.citii.io .
I'll be making changes/updates to it in the next few weeks so I'd love to hear your feedback!
I've received some indication in inaccuracies in some of the data. The 2017 cost of living data comes from Numbeo - (apparently the world's largest database of user contributed data). But I do hear you, there's a few inputs I've made that's raised my eyebrows as well.
I see you've added a few things after I put up my PR! I like how you've added a little dropdown up top to select a different city and not have to repeat the whole thing :)