Here’s the job description polished and structured for maximum clarity and engagement:
About the Project:
We are building an innovative iOS app prototype that uses augmented reality (AR) to track and analyze the motion of a golf ball in real-time. The app will calculate key metrics such as speed, angle, and trajectory to provide insightful data to users. This is a prototype-stage project with the potential for further development based on initial results.

We’re seeking a talented iOS developer with ARKit experience to bring this vision to life.

Responsibilities:

    Design and develop an iOS app utilizing ARKit to detect and track a golf ball in motion.
    Implement algorithms to accurately calculate and display key metrics, including speed, angle, trajectory, and more.
    Seamlessly integrate AR elements with real-world tracking for a smooth user experience.
    Optimize the app for real-time performance and responsiveness.
    Provide expert recommendations on hardware requirements and the capabilities of ARKit to meet project objectives.

Requirements:

    Proven experience with iOS development, specifically with ARKit.
    Strong knowledge of motion tracking, physics simulations, and augmented reality.
    Proficiency in Swift programming language and relevant frameworks like Core Motion and Vision.
    Familiarity with 3D modeling and AR object placement.
    Problem-solving skills to address challenges in object detection and real-world environment tracking.

Preferred Qualifications:

    Prior experience developing sports-related or motion-tracking apps.
    Basic understanding of golf mechanics or ball physics (not required but a plus).
    Strong communication skills for regular updates and discussions.

Project Timeline and Budget:

This is a short-term project aimed at delivering a functional prototype for testing the concept. Based on its success, there may be opportunities for long-term collaboration to enhance and scale the app.

Please include your hourly rate or a fixed project fee in your proposal.

What to Include in Your Proposal:

    A brief overview of your relevant experience with ARKit and motion tracking.
    Links to any previous ARKit projects or apps you’ve developed.
    Your proposed approach to tracking and analyzing motion using ARKit.
    An estimate of the time and cost to complete the prototype.

Next Steps:

We’d like to schedule a consultation call to explore the feasibility of using this AR app for golf motion tracking and answer any questions you may have about the project.

If you’re excited about working on cutting-edge AR applications and have the expertise we’re looking for, we’d love to hear from you!

This version is clean, professional, and emphasizes the exciting potential of the project while providing all the necessary details to attract qualified candidates. Let me know if you'd like further refinements!