Hi,
Your Mac app sounds interesting!
A list of habits, and a scrollable view to track and remind.
I develop apps for OS X and iOS, using Xcode and Swift.
You can see some examples of my work, and client reviews of my completed projects, on my Freelancer profile page.
If you'd like to reply to this message, we can discuss things further, before you make your decision on awarding the project.
Best Regards,
- Rob Dixon.
(P.S. A piece of friendly advice: be sure that your project's bids are for OS X, not just iOS, as there is sometimes confusion over this on Freelancer, and the skills are not the same!)