Everyone carries them around on their smartphones: The black holes of productive time. However, we are not talking about a new astronomical phenomenon, but about apps that should actually make our lives easier.
You don't have access to this post on number13 at the moment, but if you upgrade your account you'll be able to see the whole thing, as well as all the other posts in the archive! Subscribing only takes a few seconds and will give you immediate access.

This post is for subscribers only

Subscribe now