Guten morgen,
I've been using Swift 3.0 since the early Xcode 8 betas, and I've converted my client apps, and my own apps.
As you know, the conversion is quite a complex process, which requires care and attention!
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.
I can convert your app for you, for €100.
(Please note that if the app is very large, we will have to discuss the fee, and it may be useful for me to see the app before agreeing the final price.)
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.