Animated storyline video for concept app

We require a 60-90 sec video to showcase a concept banking app. This will be a simple animated video that tells the story of a bank customer and how the app helps them; interspersed with 3 app screens that showcase the app.

A voiceover would be great if possible, but if not then just on-screen text over a bed of music is fine. It would be great to see any past examples you have of this type of work. We are looking for speed of production over anything else, so the animation does not need to be professional-quality. We require delivery by Thursday 26th November.

We are able to provide all source content ASAP:
- Storyboard as PPT or PDF file
- Source images for app screens as PNG or Sketch files

Some examples below:
https://youtu.be/tcS2Jk81RAU