이 앱은 2019년 10월 31일에 서비스를 종료했습니다.

Influential YouTubersHandpicked by the Callmart editorial desk

We are so excited to introduce you to Step-by-Step Science today! The YouTubers' Archive has hand-selected this channel and we want to tell you some great reasons to check them out.

Step-by-Step Science

Subscribers85,977

Total Views13,663,004

View YouTube

Channel Description

Hundreds of physics, chemistry and math videos. Everything explained in a clear Step-By-Step manner. They are also organized topically at my website http://www.stepbystepscience.com. Please subscribe, give me a thumbs up, leave a nice positive comment and share my videos with all of your friends! Thanks for all of the support.

From the YouTube channel’s "about" page.

Comments by Callmart:

・The editing by Step-by-Step Science is just as strong as their ability to create stellar content for subscribers. We love it when the editing is on par with the quality of the actual video content.

・You can't just watch one video by Step-by-Step Science — you have to keep clicking once you start. We think this is a sign that Step-by-Step Science is making some great creative content.

Callmart's Color Choice

The color that our editorial team chose for
Step-by-Step Science is... Powder Blue

Powder Blue is a Blue color,
which means this YouTuber is...Hard-Working

Recommended Videos

Selected by the Callmart editorial department
Created by Step-by-Step Science

A New Way to Communicate with YouTubers

Problem:

Up until now, subscribers were limited to interacting with YouTubers via comments and messaging.

Subscribers are willing to pay money to communicate with YouTubers, but there haven't been any viable ways for them to do so.

Don't you wish there were ways
to directly communicate with your favorite YouTubers?

Fortunately, there's a new and
exciting way to communicate
with YouTubers..

There's a high demand for a platform to communicate with YouTubers on a 1:1 basis, and we'll be introducing exactly that -- an app to connect with your favorite YouTubers!

Introducing a brand-new app to
speak to YouTubers
with a phone call

Can sell: 22 Countries
Can buy: 155 Countries

From conversations with your followers to consultations with your clients, Callmart enables you to make money by connecting online with people worldwide.

Callmart with Step-by-Step Science

Life with Callmart

A day in the life of a Callmart user:

Seller

Wants to use free time to make extra money.

Buyer

Wants to speak to someone from home.

I want to offer my services and/or knowledge to people all over the world!
Create a listing
Share on social media
I want to speak to people who offer the services I'm looking for!
Access services at your own convenience
Take calls when YOU want
Provide a service Receive a service
Pay by credit card
Manage earnings in-app
Transfer earnings to your bank account
Whenever I need a service, I turn to this app!
I was able to turn all my free time into making money conveniently!

3 month $0 campaign

Download now to get
the service fee
waived for three months!
That’s right,
the service fee will be
$0.00 for three months.

Don’t miss this chance!

How to use Callmart

Similar YouTubers

If you're definitely going to subscribe to Step-by-Step Science after reading this article, you might want to check out some similar channels shown below.