Senior Safety Voice App Development

I'm seeking an experienced iPhone app developer to create a voice-activated safety app for seniors called ‘I’m Okay.’ The app's primary function is to ensure seniors can easily call for help in emergencies.

Essential Features:
- Voice Activation: "Hey Siri, I’m Okay."
- Sequential dialing of up to five saved numbers
- Automatic call to 911 if no response
- High accuracy in noisy environments and understanding of various accents

Design Requirements:
- Senior-friendly interface
- Prioritize simple navigation and voice activation

Analytics:
- Track call success rate, user interaction, and voice command accuracy

The app must be reliable, App Store-ready, and include built-in analytics for functionality tracking. User surveys will be set up post-launch to gather feedback.

Ideal Skills and Experience:
- Proven experience in iOS app development
- Expertise in voice recognition technology
- Strong UI/UX design skills tailored for seniors
- Familiarity with analytics integration in mobile apps
- Ability to ensure high reliability and performance in emergency situations

Please provide examples of similar work and a detailed plan.