Modern Minimalist Brand Creation

I need a cohesive brand identity for my App project aimed at families and the general public. I am looking for a modern and minimalist style. The right candidate will create a logo, one-liners, and taglines reflecting trust and reliability. Social media launch posters are also required.

Ideal skills and experience:
- Graphic design
- Branding expertise
- Copywriting for taglines
- Social media marketing design