Heartok is a free iPhone application developed by Marouane EL Bachiri. It falls under the category of Social & Communication with a subcategory of social networking.

Heartok allows users to easily repost and save TikTok videos. The process is simple and straightforward. Users can open TikTok, find a video they want to repost, and click the "Share" button. From there, they can select the "Copy link" option. Next, users can open Heartok and click the "Heart button" to save the video. Finally, by pressing the "Repost it button," users can repost the video to their own TikTok account.

It's important to note that Heartok is not affiliated with or endorsed by TikTok. The app provides a convenient way for users to repost and save videos, but any unauthorized reposting of content and/or violations of intellectual property rights are the sole responsibility of the user.