I’m interested to see what hosted options are out there as well.
If you’re willing to consider alternatives, take a look at Greenshot. It’s a free and open source local program that takes a screenshot which allows you to edit it directly and copy the image to clipboard without saving.
It includes the ability to add text, blur out parts, crop, draw arrows. Just press print screen to capture an image.
Instructions unclear. Baby is now a werewolf and howls loudly when Kodi is buffering.