Native speakers help / app promotion

Dear all,

After months of tinkering with the development of our app, we are now very close to be able to put it in the stores.

This said, we are now in the process of building our landing page, twitter, instagram, facebook, likedin accounts and I was wondering if you have any professionals that can help during this promotional step.

Any services or professionals you'd recommend to assist us on the promotional texts, messaging and branding of the app?

Thanks in advance,