Comparison

Larix Broadcaster vs Heartwitch

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Larix Broadcaster

Stream broadcast-quality video live from your mobile device to any server or platform. Offers advanced features like multi-camera support, customizable overlays, and multiple protocol compatibility. A premium subscription unlocks additional professional broadcasting tools.

Highlights
  • Broadcast-quality live streaming
  • Supports SRT, RTMP, NDI HX2, and more
  • Multi-camera capture with PiP and side-by-side
  • Customizable image, text, and GPS overlays
  • Record streams to iCloud
  • Talkback audio return
  • Remote device management
Features
Read full description

Stream live from your iPhone or iPad - broadcast-quality video to any server, platform, or production switcher. No encoder box, no desktop setup required. Whether you're streaming IRL to Twitch or Kick, covering breaking news in the field, or feeding a remote production over NDI - Larix Broadcaster gives you the tools professional broadcasters rely on. PROTOCOLS & CODECS Supports SRT, RTMP/RTMPS, WebRTC WHIP, NDI HX2, RTSP, RIST, and Zixi. Video encoding in H.264 and H.265/HEVC. Audio in AAC or Opus depending on protocol. Multiple simultaneous outputs available (Premium). CAMERA & VIDEO Multi-camera capture with picture-in-picture and side-by-side modes. Front and back cameras with live switching, portrait and landscape rotation. UltraHD resolution, Dolby Vision HDR, and adaptive bitrate streaming (ABR). USB camera input on iPadOS 17 and later. Center Stage supported on iPad. OVERLAYS & RECORDING Image, text, HTML, and GPS-based overlays. Assign different overlay sets to live, paused, and stand-by states. Record streams as MP4 to iCloud. SEI/NTP metadata insertion for multi-camera sync. PROFESSIONAL FEATURES Talkback audio return via SRT, RTMP, Icecast, and SLDP. NDI tally light for on-air feedback. Stand-by mode for pre-configured stream launch. Larix Grove for sharing connection settings via QR code or deep link. LARIX PREMIUM - $9.99/month Removes the default watermark. Unlocks multiple simultaneous outputs, Talkback, HEVC encoding, advanced overlays, ABR streaming, and more. Manage licenses and control devices remotely via Larix Tuner. Learn more: https://softvelum.com/larix/premium/ RESOURCES Docs: https://softvelum.com/larix/docs/ Video tutorials: https://www.youtube.com/watch?v=Dhj0_QbtfTw Larix Broadcaster uses Apple's Standard License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Heartwitch

Stream your real-time heart rate from your Apple Watch to a web browser. Ideal for streamers who want to share their health stats during live broadcasts without extra hardware.

Highlights
  • Live stream heart rate data
  • Uses Apple Watch sensors
  • No extra hardware needed
  • Sends data to web browser
  • Independent watch app
Read full description

Show your heart rate as you live stream with this watch app! What is this exactly? Heartwitch is a combination Apple Watch and Web Application for sending your health data to a web browser window. Why would you want to send your health data to a web browser window? In the last few live years, live streams have become incredably popular and in many tense circumstances streamers want to share their health stats specifically their heart rate. For instance, speedrunners who wish to break records as to how quickly they can beat a game. With Heartwitch, there is no need for extra hardware. It simply uses the sensors on the Apple Watch to detect your heart rate and it sends it through our servers directly to your browsers. Do you save my health info? None of your health data is saved on our server. Every health stat is received by our servers from your Apple Watch and directly sent to the web browser. At no point is it saved on our end. Each workout is saved locally on your watch and stored on your devices along with your other workouts stored on your device but none of the health data is stored by us. How do I launch the app? I don't see an icon on my iPhone? Heartwitch is a completely independent watch app. Therefore there is no app for the iPhone and at this point there is no plan for one. How can I share my web browser window on a livestream? If you are using OBS to stream online, share your web browser window using the Window Capture Source. What makes this app so special? There's no need for additional hardware and using the Apple Watch health data is updated frequently.

Screenshots

Larix Broadcaster3 screens
Heartwitch3 screens

Verdict

The call

The clearest difference is rating: Larix Broadcaster at 3.6 against Heartwitch's 2.6. Larix Broadcaster also leads on update cadence (every 3 weeks vs every 5 months) and review sentiment (56% vs 40%). Heartwitch's advantage is in-app purchases (none vs 3) and iOS requirement (14.8 vs 18.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Larix Broadcaster sells 3 in-app purchases, starting at $9.99 per month. Heartwitch asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Larix Broadcaster holds the better App Store score, 3.6 against 2.6. That said, the two scores are not equally well evidenced: Larix Broadcaster has 131 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 56% of Larix Broadcaster's written reviews are positive against 40% of Heartwitch's.

UpkeepUpdate frequency

Larix Broadcaster ships an update every 3 weeks, Heartwitch every 5 months. The most recent releases landed on November 12, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 3 level
Larix Broadcaster versus Heartwitch: the parameters behind the verdict, then further details
ParameterLarix BroadcasterHeartwitch
PriceFreeFree
Rating3.6 (131 ratings) — better2.6 (9 ratings)
Positive reviews56.1% of reviews — better40.0% of reviews
Number of ratings131 — better9
Update frequencyEvery 3 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod, Apple Watch — better
Requires iOS18.014.8 — better
Further details — not scored
Size36 MB15 MB
Age rating4+4+
DeveloperFurtree Systems, Inc.BrightDigit

Customer experience

Larix Broadcaster

All ratings131 ratings
Positive61.1%
Neutral5.3%
Negative33.6%
Written reviews123 reviews
Positive56.1%
Neutral8.1%
Negative35.8%

Heartwitch

All ratings9 ratings
Positive33.3%
Neutral11.1%
Negative55.6%
Written reviews5 reviews
Positive40.0%
Neutral20.0%
Negative40.0%

Bugs and requests

Larix Broadcaster

Reported bugs

17 issues
  • App crashes frequently after recent updates
  • Overlay rotation bug - upside down in preview mode
  • Audio drops when switching between cameras
  • Auto-focus triggering every other second during streams
  • Audio encoder crashes when changing lenses mid-stream
Show 12 more
  • Bluetooth microphone crashes entire audio stack
  • RTMP connection drops without error messages
  • Web widget add button non-functional on iPhone 15
  • Stream breaks every few seconds on some devices
  • Audio distortion and popping with increasing frequency during long streams
  • Garbled audio during streaming
  • App crashes on iPhone 7 Plus - camera won't display
  • Connection setup issues for RTSP streaming
  • Incompatibility with iPad OS 13.1 causing crashes
  • Audio interface (PreSonus AudioBox iOne) not recognized reliably
  • YouTube streaming no longer works - outdated guide
  • Camera won't show on certain iPhone models despite permissions

Requested features

18 requests
  • Custom resolution and canvas size adjustment
  • External SDI/HDMI source support via USB capture cards
  • Working video stabilization mode
  • In-app feedback mechanism
  • Zoom in/out functionality
Show 13 more
  • Microphone gain/level adjustment for built-in mic
  • Pause screen customization with user-selected images/audio
  • Watermark/overlay icon support
  • Current zoom level indicator
  • Browser overlay for live chat and alerts
  • Screen recording and streaming capability
  • SRTLA protocol support
  • Manual and feature documentation
  • Lower pricing tiers for limited use cases
  • Lifetime license option
  • Disable iPhone image stabilization toggle
  • 60 FPS support
  • Keep stream active when switching apps with audio continuation

Heartwitch

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Larix Broadcaster

Subscriptions3
  • Larix Premium$9.991 Month
  • NDI Streaming$19.991 Month
  • Larix Premium One Year$119.001 Year
None

Heartwitch

No in-app purchases

Questions

Is Larix Broadcaster free?
Larix Broadcaster is free to download, with in-app purchases available.
Is Heartwitch free?
Heartwitch is free to download, with no in-app purchases.
Which has better reviews, Larix Broadcaster or Heartwitch?
Larix Broadcaster is rated higher. Larix Broadcaster averages 3.6 out of 5 from 131 ratings, while Heartwitch averages 2.6 from 9 ratings.
Do Larix Broadcaster or Heartwitch have ads?
Neither Larix Broadcaster nor Heartwitch shows ads.
Which is updated more often, Larix Broadcaster or Heartwitch?
Larix Broadcaster ships an update every 3 weeks, and Heartwitch every 5 months. Most recently, Larix Broadcaster was updated on November 12, 2026 and Heartwitch on November 3, 2026.

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