Yes, there are quite a few TikTok uploaders that work without having to log in. I've tried a few, and some even allow you to upload without a watermark. I recently discovered the https://snaptik.gdn website, which offers a really intuitive and user-friendly tool. You just paste the link, and it allows you to download videos directly to your device — without logging in, without watermarks. It is very convenient when you need quick access without account problems.