Experienced Mobile App Development Team Needed for Secure Memory Storage + AI Content Filtering App

I am looking for an experienced, professional mobile app development team to build a high-quality iOS/Android application that allows users to securely store, record, and schedule personal messages, videos, and written content for the future. The app will incorporate AI content moderation, encrypted cloud storage, user accounts, and a clean, modern UX.

This is NOT a basic app. I am looking for a long-term, highly qualified partner who can build a secure, scalable, reliable platform with the potential to grow significantly.

High-Level Feature Requirements:

User account creation & authentication

Ability to upload text, audio, and video messages

Ability to schedule future delivery of messages

AI content moderation (positive/clean message verification)

Encrypted & secure cloud storage (AWS, GCP, or Azure preferred)

Administrative dashboard for account management

Notification system

Clean, modern UI/UX

Ability to scale to a large user base

Future API potential for integration with outside platforms

Security Requirements:

End-to-end encrypted message storage

Secure user data architecture

Compliance with standard data-protection best practices

Strong experience handling sensitive content

Use of reputable cloud infrastructure only

You MUST have experience in:

Building complex, secure mobile applications

AI/ML integration (moderation, filters, NLP, LLM tools)

Scalable cloud architecture

Video/audio upload & storage

Designing intuitive user interfaces

Handling long-term data retention safely

What to include in your proposal:

Examples of apps you have built that include:

AI or machine learning

Cloud storage of user data

Sensitive or private content

Your recommended tech stack

Estimated project timeline

Estimated cost (fixed, milestone-based, or hybrid)

Your team size and roles

How you handle long-term support, security updates, and scaling

About You:

Excellent English communication

Strong portfolio with real, verifiable examples

Transparent pricing

Experience building apps for long-term growth

Willing to collaborate through design, build, testing, and launch

This project will be structured in phases:

Phase 1: Wireframes + UX

Phase 2: MVP core build

Phase 3: Full version with AI + encryption

Phase 4: Long-term support & enhancements

Only serious, experienced teams will be considered.