I mean, I've heard this before and even entertained an idea of building couple apps on blockchain myself. But are there any real-world apps which were 1. adopte

I mean, I've heard this before and even entertained an idea of building couple apps on blockchain myself. But are there any real-world apps which were 1. adopted by a large number of users 2. adopted by users specifically because of blockchain? I just never seen anything like that and Ethereum has been around long enough.