“Kids grow up fast,” say that developers of the Lifecake app, with which you can “see and share their amazing progress with a private, beautiful photo and video timeline.”

The free app for iPhone and Android makes it easier to enjoy photos of your child, combining your pictures with those your spouse takes. All photos are sorted by age, so you “zoom to any age in seconds, or compare stages from birth to today.”

You can also update faraway family with the app, and so skip the email.