Hi,
I've written a number of iOS apps for custom home-automation and laboratory-based Bluetooth devices.
If you are looking for an experienced developer who can help you with all aspects of app design and creation, then we should talk!
I develop apps for iPhone/iPod Touch/iPad and Mac, using Xcode and Swift.
You can see some examples of my work, and client reviews of my completed projects, on my Freelancer profile page.
It looks like you may be new to Freelancer? Before starting the project, there should be a clear understanding of the details, the deadline, and the milestone payments.
A couple of obvious questions spring to mind:
* How does the bluetooth signal get out of a metal(?) mailbox?
* In testing, what kind of bluetooth range has your device been able to achieve?
* If the app is "backgrounded" or not running, we need a "notification" to wake it up, so how does your device generate an iOS notification?
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.