Larix Broadcaster 4+


Furtree Systems, Inc.

Designed for iPad

    • 3.7 • 125 Ratings
    • Free
    • Offers In-App Purchases



Larix Broadcaster is SRT / RTMP / Zixi / NDI / WebRTC / RTSP / RIST streaming camera app for IRL and remote contribution

Larix Broadcaster allows streaming video and audio live content from mobile device for real-time remote contribution.
~ SRT streaming in Caller (Push), Listen, Rendezvous mode, libsrt v.1.5.3
~ SRT multipoint listener support
~ RTMP and RTSP streaming with SSL for RTMPS/RTSPS
~ WebRTC support via WHIP signaling
~ Zixi protocol support to deliver live streaming with full set of advanced transmission techniques, with AVC/HEVC codecs, SEI timestamps and Grove support.
~ NDI®|HX2 support: preview stream, Discovery Server, metadata setup, handle zoom from NDI Studio Monitor
~ RIST protocol streaming in Push mode: RIST Main and Simple profiles via librist v.0.2.7
Watch tutorial on connections
~ Multiple simultaneous connections support: add several connections profiles and choose any of them for parallel streaming.
~ Pause the stream: long tap on Start will pause the stream without disconnecting it, video track will contain a black screen, audio track will contain only silence.
~ Stand-by stream mode: when stream is stopped, long-tap to start a stream in pause mode with separate set of overlays.
~ Watch video tutorial on overlays, pause and stand-by:
~ Talkback for getting audio return feed via SRT, RTMP, Icecast and SLDP. Read more here:
~ UltraHD resolution support.
~ Dolby Vision HDR support (Settings / Video / HDR video menu)
~ Front and back cameras are supported with hot flip.
~ Landscape and portrait mode with live rotation.
~ Multi-camera capture with picture-in-picture and side-by-side on XR, XS and later devices.
~ Dual/Triple camera system support, including wide-angle and telephoto camera.
~ Center stage for iPads, enabled as described at
~ Autoexposure lock, white balance lock, manual color temperature in Quick settings.
~ Saving to MP4, making screenshots, iCloud support
~ Recording "Compatibility" option in case resulting file has black frames at preview.
~ Record with different parameters like larger resolution
~ Input audio gain control and source selection, Bluetooth audio
~ Audio-only capture support: disable preview, stream from background, no video in output stream. Use Audio menu to enable.
~ Pinch-to-zoom, all iPhone 11 cameras are used

USB cameras are supported on iPadOS 17

- H.264 encoding for all protocols including WebRTC
- HEVC/H.265 encoding for SRT, RTMP, RIST, RTSP
- AAC audio, except for WebRTC
- Opus audio for WebRTC

Insert SEI metadata into SRT, WebRTC, RTMP for NTP sync up, via Advanced menu.

Larix Premium via in-app subscription is required for some of the features

Larix Grove can be used for easy links distribution via deep links / QR codes.

Overlays support:
NEW! ~ GPS HTML overlays (Larix Premium)
~ Image layers
~ Text and HTML overlays
~ Date/time support in overlays as defined in Unicode LDML
~ Web widgets
~ Assign layers for all mode: streaming, pause and stand-by
~ Enable layers on-the-fly

~ Streams to any server like Nimble Streamer, Wowza, Red5, Flussonic etc.
~ Streams to vMix, OBS Studio and other desktop software
~ Streams to YouTube Live, Twitch,, Facebook Live, Dacast and other live services
~ Streams to Cloudflare Stream via SRT, WebRTC and RTMP

Watch video tutorial on overlays:

Adaptive bitrate (ABR) is available with logarithmic descend, ladder ascend, hybrid approach for SRT and variable FPS. It's disabled by default, check Video menu to use.

Join our public beta testing to get new updates among the first:
Full reference of docs regarding setup and usage:

Larix Broadcaster uses Apple’s Standard License Agreement (

What’s New

Version 1.5.14

~ Added "External devices support" option for AudioEngine
~ Added format parameter for gps_heading() function, i.e gps_heading(tru, "d0º r8") for degree and 8-wind rose directions, gps_heading(mag, "r32") for 32-wind rose directions)

Ratings and Reviews

3.7 out of 5
125 Ratings

125 Ratings

MaestroJAL ,

Heading in the wrong direction

This app has constantly been my “go to” app for streaming RTMP from my phone. It has solid features, it is reliable, and easy to use. I have recommended this app to many people over the years, as I use this technology almost daily.

Recently, I’ve been watching as each update takes away standard features and puts them behind a rather premium subscription - $9.99 a month or roughly $120 a year. Most recently, a limitation was added to free streaming to your own self-hosted endpoint. My streams are usually about two hours long and would be cut off.

While I completely understand needing to make profit on one’s labor, I cannot justify spending that kind of money on this product when there are other capable apps that allow free streaming and pay-once-for-the-feature upgrades. Furthermore, slowly taking away features that were already part of the app’s free offerings and placing them behind a paywall, in my opinion, is not good.

The app is great and functions well (5 stars). The pricing scheme has forced me to look elsewhere (-2 stars).

Developer Response ,

Thank you for sharing the extended review. Our team had to move to monetization model for the features used by advanced streamers, hence the in-app subscription. Thank you for supporting us.

Lolcats of rpg ,

Getting worse and worse… Been using the app for over a year

UPDATE: I did update to your new version from 2 days ago, and the rotation bug is NOT fixed for overlays on PREVIEW, which I use extensively to read live chat and alerts! Its still upside down on preview and only right side up on the live end feed. Please test your product because its frustrating having to pay subscription for the product and be your QA as well. I use the software 5 days a week and this has been broken for 2 versions now, I can now only broadcast without live rotation mode until this is fixed… very frustrated.

Had no problem with paying monthly fee except now there are more bugs than ever!! Latest bug makes overlays upside down when using live rotation mode, is there anyone even testing this app before releasing new versions? Not to mention it now crashes freq and does not support srtla … it was a good app I will give it one more week to fix the upside down overlays before deleting and cancel my monthly sub.

Developer Response ,

We are sorry for inconveniences. Can you please send us more details at about these issues? We cannot effectively communicate about issues via reviews.

Jonathan.Colon ,

Was an amazing app until they decided to paywall free streaming and watermark your stream

Great features! Best live streaming app out there especially for twitch IRL from an iPhone. until recently you could go live as long as you wanted no issues. Now if you stream over 30 minutes they place an ugly watermark over your stream unless you pay them 9.99 a month. This is unacceptable especially with the lack of a manual and explanation of features. I googled “audio engine Larix” to see how this feature works and there is little or no information explaining most of the features in the app. They also offer ndi streaming for $20 and fail to explain what the feature provides. Do I no longer need a server to push my feed to OBS if I use NDI over cellular data? That’s the only way I can justify paying $20 a month since servers cost money. I am confused. Maybe work on some documentation for your software then start charging for basic features that were already free.

Developer Response ,

Thank you for sharing. We'll add more clarification for NDI support to remove confusion.

App Privacy

The developer, Furtree Systems, Inc., 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

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