Sorry to be pedantic but I presume you're not a native English speaker? 'Joyable' is not an English word, but rather the name of a startup company[1]. Perhaps you're looking for 'joyful'. 'Checkout' when spelt as one word refers to the place in a supermarket where you pay for the things in your basket. When you ask people to look at something, it's usually spelt as two words (as in 'check this out').
[1]: https://joyable.com/