I believe due to the simplicity of posting pictures and uploading videos online. I see that more people will join appic easily than steemit, people likes to expresses themselves through photos and since they are not writing anything but just posting photos and tagging the photos will make it fun and easier for people to us.

Appic has a great future , I won't be surprise to see appic reach 2 million users before the end of this year @modernpastor