YNN highlights the coolest and newest apps for your cell phone or mobile device in the twice-weekly segment “App Wrap.” Adam Balkin filed the following report.

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"Journey to the Exoplanets"

This app is for anyone interested in expanding their horizons even a bit further. It allows users to see and learn about planets outside Earth’s solar system, the ones most people have never heard of.

It’s all made available via the staff at Scientific American Magazine. There are some neat little features in there to help pique the user’s interest even more, like the ability to pan around space by moving the device from side to side.

Users can create their own 3D exoplanet, and the app will even guide them through some rudimentary astronomy experiments.

“Journey to the Exoplanets” is an iPad app for $9.99.

"My First Trainz Set"

If planets seem a bit too daunting to some users, model trains are a good, down-to-Earth alternative.

“My First Trainz Set” is for kids or adults who dreamed of weaving tracks all throughout their home only to be told by their parents that it was too expensive to buy all the trains and tracks to actually do so.

The app allows users to set up tracks anywhere and everywhere in a virtual home with no critical authority figures around. There are nine trains to drive on those tracks, from old school ones to a shiny new bullet train.

As users drive, they’re given little tasks, like helping army men get from point A to B or to bring pencils over to paper.

“My First Trainz Set” is an iOS and Android app for $2.99.