Even though Firestick is offering the Screen mirroring option natively, again but iOS and Mac devices are still not supported. There are obvious workarounds which you can use to mirror your Mac to Firestick. Let's check those out. I also made a list of ways with which you can mirror your iPhone to the Firestick and easily share your content to the big screen. The following apps simulate an AirPlay server on the Firestick and receive the content from computer and cast it on the TV. Read: Best Apps for Firestick and Fire TV Stick 4k

1. AirScreen

AirScreen is one of the most popular apps to mirror both Android and iOS screens to the Firestick. The one-time setup is really simple, get the app from the Amazon Store (link below). Open the app and run the server on the FireStick and you should see the option pop up on your Mac. Unlike streaming from an iPhone, you can use your Firestick as a second monitor to play some videos while you work on your computer. Pros
  • Easy to use UI
  • Quick Connection
  • Fast feed transfer
Cons
  • Unreliable connection on the Firestick 4K (maybe it’s the software issue)
Install AirScreen (firestick)

2. AirPin Pro

Just like AirScreen, AirPin Pro also lets you share the screen over AirPlay. It creates and runs the AirPlay receiver in the background so you don't have to turn ON the server every time you boot your FireStick. It is great to mirror your computer screen or use your Firestick as an extended display. However, you can just play some music without mirroring the display. The app is paid and would cost you $4.99 but you can try the free version to see if the app works for you. Pros
  • Local Connection Feed transfer
  • Different modes of AirPlay for Video and Audio
Cons
  • UI is confusing for the first-timers
Install AirPin Pro (Firestick)

3. Mirror for Fire TV

AirPlay is not the only way to mirror your Mac screen to the Firestick. Mirror for Fire TV is another mirroring app which lets you cast your screen to the TV effortlessly. You just install the receiver app on the Firestick via the following link and install another app on the Mac. It automatically detects your Firestick on the same network and seamlessly streams the footage. Unlike AirScreen and AirPin Pro, you can drop the video files from your Mac and play it on the Firestick without much lag. However, it comes with a price tag of $9.99 and you can try it for three minutes before purchasing the paid version. Pros
  • High-speed local connection
  • Dedicated channel for playing videos
Cons
  • The app requires installation on both devices
Install Mirror for Fire TV (Firestick, macOS)

4. Splashtop

If you're serious about mirroring your computer to your TV then maybe try Splashtop. It is a popular remote mirroring app which you can use to cast your screen to the TV. It is more than just a mirroring app and you can even control the mac from your TV but you would need to connect a keyboard and a mouse using a splitter cable. Nevertheless, Splashtop is a legitimate option to mirror your Mac Screen to the Fire TV Stick. The only caveat with this app is that you can't install it natively. However, you can get it from Aptoide TV. Pros
  • Secure Connection
  • Allows remote control of Mac from TV
  • Easy UI
Cons
  • Requires additional hardware to work as a remote solution
  • Doesn't work without the Internet
TeamViewer- Alternatively, you can use TeamViewer client to remotely log in to your Mac from your Firestick. It works just like Splashtop and lets you see the Mac screen and lets you control everything on it. You can get it on Aptoide TV app. Check out Aptoide TV

Mirror your Macbook on the FireStick

These were some of the best apps which let you view your iPhone screen on the big screen. AirScreen and AirPin Pro are efficient and available on the Amazon Store. Splashtop is great because you can actually control your mac from the TV. It is perfect when you have to log in to a remote machine at your work or at a remote location. Which app do you use to mirror your iPhone screen to the Firestick, let me know in the comments below? Related: Which to buy among Chromecast, Firestick, Roku, Android TV, and Apple TV?