TimeLine - Travel Back in Time is a free app for iOS and Android devices. It allows you to simulate a time-travel effect on your phone.

The app is for entertainment purposes only. It can be used as a stand-alone effect or is perfect when used in conjunction with any time plot in magic.

It has lots of options and settings, as well as a video tutorial by Patrick Kun.

How to use it:

Open the app. You will see a list of the options. Click on TimeLine.