1. Open http://en.savefrom.net in your safari browser, paste youtube url in place and tap Download
2. Tap on Action button, then tap on Download item on second row
3. Tap to select All segment on top of screen, scroll down to find proper video format and resolution to download, consider that iOS can only handle mp4 and 3gp files.
4. Wait until app completes downloading
5. Select Document tab, then tap on hold on videoplayback until menu shows, tap on Rename
6. add .mp4 or .3gp extension regarding the file you selected in third step
7. Tap on file, then tap on Preview to watch movie
Voila! Have fun!

2. Tap on Action button, then tap on Download item on second row

3. Tap to select All segment on top of screen, scroll down to find proper video format and resolution to download, consider that iOS can only handle mp4 and 3gp files.

4. Wait until app completes downloading
5. Select Document tab, then tap on hold on videoplayback until menu shows, tap on Rename
6. add .mp4 or .3gp extension regarding the file you selected in third step
7. Tap on file, then tap on Preview to watch movie
Voila! Have fun!