NDI Monitor 4+

Display NDI Streams with Audio

Mark Gilbert

    • 3.1 • 23 Ratings
    • $9.99



Display low latency NDI Video and Audio streams on your iOS device Supports Full NDI and NDI HX2 (but not NDI HX1). Now with NDI5.
From industry leaders Sienna.

Professional NDI Monitor from global IP Video leaders Sienna.

NDI sources on your local subnet are presented in a pop up menu to select, when you tap on the screen. If you enter additional 'NDI Access' IP Addresses from other subnets into the system prefs panel for NDI Monitor, those NDI sources may also be accessed. Includes support for NDI Discovery server (see app settings), resolution control, video flip for autocue and control of NDI network Protocol for reliability.

Notes: A very stable WIFI connection, or a wired ethernet connection are required for smooth playback of NDI Streams. Using a directional WIFI antenna and using the sweet spot of your wifi can help. If you experience glitching of audio or dropped video frames, the problem is very likely a wifi connection which is insufficiently stable to support smooth NDI video to iOS - in this case please try a wired ethernet to lightning adaptor.

You should not expect perfect performance when selecting Hi Resolution NDI - which is offered as an experimental mode for users with very fast devices, on very fast, clean network connections. In some cases you may see great results in hi res.

There are preferences in the System Settings app for NDI Monitor to setup application options. You can also use the app NDI Scanner as a stream selector - it will open NDI Monitor when you click on a selected stream.

NB. This app does not support NDI | HX1 format streams - only full NDI format and NDI HX2

What’s New

Version 5.30

Improved display of sources with Alpha
Fix for skewed images with certain odd resolutions.
NDI 5.1.0

Ratings and Reviews

3.1 out of 5
23 Ratings

23 Ratings

Wyrdebeard ,

A great start, but could be much more

This is the only app out there that does what it does, so it’s hard to make comparisons. The basic functionality works fine — it detects and displays NDI a/v streams. Sometimes the video freezes when switching between apps and requires an app restart, but usually reselecting the source will reset it.

Where it falls down are the little things that you expect to work but don’t. The audio output won’t play over Bluetooth, so you can’t use wireless headphones or speakers. The app hasn’t been built with iPad multitasking support, so you can’t do side-by-side mode or picture-in-picture, which would be really useful if you’re monitoring a stream that you’re controlling with another app.

For the price, a little more polish would be nice, but until there’s some competition, I don’t know if we’ll see it.

Ultan21 ,

Great Potential

Works great however having issues with audio (no audio seems to play) and newtec scan converter seems to crash it. Could be a great tool if issues addressed.

Iphone Xs Max iOS 14.1/ Mac Book Pro/ Google Wifi AP

Developer Response ,

Hi Ultan21.
Perhaps your NewTek ScanConverter is emitting NDI at a higher resolution than the app can support. Try sending HD from ScanConverter and check if that works as expected. If you continue to experience issues with audio please contact support so we can investigate.

Ekimnosredna ,

Definitely needs work

This is awesome... it definitely needs the low bandwidth option to be available like the camera app if that is even possible. Did a time test. It is well with in one second loss from watching a timer.
It is a great start, hopefully with some time it can get better.

For notes we have a ruckus network that we have streamed NDI over to a compute stick on. We know our network can handle it. I think it has something to do with the iPad. I’m using a mini, will try to try it on a 9.7 pro later

Developer Response ,

Hi Ekimnosredna. Thanks for your positive comments. Note that you can control Hi Bandwidth (or low bandwidth), as well as HiDPI modes in the Systems Settings for NDI Monitor. On the sort of wifi network required for this app - you should see latency of only a few frames. If you are seeing as much as a second - then you network or your device are probably struggling and you may want to reconfigure.

App Privacy

The developer, Mark Gilbert, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer

Photo & Video
Photo & Video
Photo & Video
Photo & Video
Photo & Video
Photo & Video

You Might Also Like

Photo & Video
Photo & Video
Photo & Video
Photo & Video
Photo & Video
Photo & Video