Flashback can be used to record change of a variety of things. Here are some examples below.

- Take a selfie and enjoy the changes in your face and hairstyle
- Check the healing of a wound every day and see how it is progressing on video
- Check your daily motivation for dieting, muscle training, etc.
- Record the growth of fast-growing children, houseplants, etc.
- Just record something (my friend seems to use it to record fishing catches!)

Also, you can take beautiful pictures with the grid and the translucent previous picture.

Enjoy your own Flashback!