Hi,
I have 5+ years of experience in iOS & Android App Development.
I always provide admirable advanced programming throughout the whole project progress.
I have read project details.
I think emoji characters are most important to success the emoji apps.
And should be convenient to use the app .
I mean app design should simple and classic.
And should have strong back-end service with fast speed for downloading emoji package and send/receive required datas.
Anyhow the most important thing is that you should select the senior designer for emoji designs.
I am confident I can perfectly complete it.
I already have source code for Emoji, So, I can create your app quickly and perfectly.
Thank you.