Private Journal App Development

I need a private journal app for both iOS and Android. Users should log in using their Google accounts.

Key Features:
- Share entries on Facebook and Instagram
- Basic picture upload with filters and editing tools
- Tagging and captioning photos
- Text overlay on pictures
- Instagram-like display layout
- also sharing a post with someone through email

Ideal Skills and Experience:
- Experience in mobile app development for iOS and Android
- Proficient in integrating Google login
- Expertise in photo editing tools and UI/UX design
- Familiarity with social media sharing APIs
- Strong portfolio in developing similar applications

Please provide samples of previous work, especially any related to journaling or social media apps.