Adobe Premiere Rush is video editing software that allows users to create, edit, and share videos on multiple devices (smartphones, tablets and computers) and platforms (Apple, Android, Windows). You use it to create and edit professional-looking videos quickly and easily, without needing advanced editing skills.
If you have an Adobe Creative Cloud subscription, a Premier Rush project can sync across your devices, so for example you can film and initially edit on your smartphone and then finish with final editing from your computer.
Here are Premier Rush instructions for a smartphone. Editing is essentially the same on a tablet or computer.