scripts/userscripts/tiktok.user.js

// ==UserScript==
// @name        TikTok+
// @namespace   tretrauit-dev
// @match       *://www.tiktok.com/*
// @grant       none
// @version     1.0
// @author      tretrauit
// @description TikTok utilities.
// @run-at      document-idle
// @homepageURL https://gitlab.com/tretrauit/scripts
// @supportURL  https://gitlab.com/tretrauit/scripts/-/issues
// downloadURL https://git.tretrauit.me/tretrauit/scripts/raw/branch/main/userscripts/tiktok.user.js
// ==/UserScript==

// Remove the "download app ads"
const dlClasses = [
  "tiktok-9er52i-DivCtaGuideWrapper",
  "tiktok-99ed1t-DivFooterGuide",
  "tiktok-txik7e-DivFloatButtonWrapper",
  "tiktok-h0mxry-DivCtaContentWrapper",
];
setInterval(() => {
  for (const dlClass of dlClasses) {
    const element = document.getElementsByClassName(dlClass)[0];
    if (element === undefined) {
      continue;
    }
    for (const childElm of element.children) {
      console.log(childElm);
      setTimeout(() => element.removeChild(childElm), 1);
    }
    element.style["height"] = "0px";
    element.style["padding"] = "0px";
    element.style["z-index"] = "-1";
  }
}, 50);