Construction Worker Time Tracking App

I need a mobile application for my construction company workers. The app should be available on both Android and iOS platforms.

Key Features:
- Worker Profiles: Each worker needs a profile with username, phone number, password, and emergency contact information.
- Time Entry: Workers must log their working hours and the tasks they are performing.
- Historical Data: The app should display total hours worked per week and month for each worker. Additionally, it should email each worker their total hours every week.
- Notifications: Push notifications to remind workers to enter their time and tasks.

Ideal Skills and Experience:
- Experience in mobile app development for both Android and iOS platforms.
- Familiarity with user profile management and data entry functionalities.
- Ability to implement push notification systems.
- Strong background in developing applications that handle historical data tracking and email integrations.