You don't need to sign up nor subscribe to any service to get the video you want. Just paste the video url and you're done.
1. Copy the video url;
2. Paste it on the 4vid search box;
3. The video file will open in a browser;
4. Save it to your local disk;
Download any video. Anytime. For free.
Note: An Ads Free version is now available on the Google Play Store - 4vid Pro
Information: You can always use 4vid without having to download the video file. 4vid will open the video file in your native Android browser and you can watch it and discard it afterwards. 4vid doesn't keep any copy of the video files in its servers since you are downloading the video file directly from the corresponding platform's servers. It is up to you to decide if you can/want to download the video file or not by using the Android browser's native function, according to the Terms of Service of the corresponding platform.