For those who might be looking for similar online titling tools, there's also dotSUB (https://dotsub.com/view/). You can use the same timings to translate into other languages. Just FYI [edited to lower snark]
dotSUB is really cool, but it doesn't burn the subtitles directly into the video. This is really important for content creators on social media, because they don't get to control the player through which the video is watched. So this is an important differentiator for Kapwing!