Kasual (formerly Yumi), is a Craigslist-type dating site that allows you to find a date based on your location. It allows members to meet up and decide how they want to proceed. They place an ad, wait for someone else to respond and then they can move forward. Members can express their sexual desires and decide the standard.
Yumi was the original name of the site. Kasual was created. It was more popular as an application and retained all its core features. The concept of sex can still be done, so it didn't change.
The app is free to use; a paid membership costs $4.99.