You don't need to install anything.
That's why we recommend the TikTok Downloader to save videos without watermark.
I can download TitTok video by using TikTok application itself, isn't it? Where can I find my video after being downloaded? Or check «Resent downloads» folder if you use computer.
Do I need to install additional software to use this Tik Tok Downloader? To sum up why TikTokDer is worth turn to account? You can send it to your own e-mail or someone else.
But pay attention to few remarks: Each downloaded video will have watermark which includes TikTok logo and creators' nickname.
For sure, you can download and save videos with a function within TikTok application.