There are many of these coming out. Mobius (https://mobius.network/) is one that provides very easy API to create smart contracts and apps, which you can choose to post on for their live DApp Store (https://mobius.network/store). It's based on Stellar but other ERC20 tokens like Credo/Bitbounce are using it now. Here's a link to the docs: https://mobius.network/docs/