Comparison

TopDirector (NDI,SRT,UVC,RTSP) vs Stream Studio

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

Head to head
About

TopDirector (NDI,SRT,UVC,RTSP)

This app allows users to switch between multiple video sources, including external cameras and built-in device cameras, for live streaming and recording. It offers advanced features like real-time transitions, overlays, picture-in-picture effects, and remote control capabilities.

Highlights
  • Multicam switching (up to 9 inputs)
  • Supports NDI, SRT, UVC, RTSP protocols
  • Real-time transitions and playback
  • Customizable overlays (titles, logos, clock)
  • Picture-in-picture effects
  • Remote title overlay via LAN
  • Live sports slow-motion playback
Features
Read full description

- Up to 9 inputs could be TopDirectorCam or any other external A/V sources that support NDI, NDI HX, SRT and RTSP protocols - Up to 4 UVC(USB -> HDMI) camera inputs on iPadOS 17 - Start all the built-in cameras on the iPhone/iPad simultaneously (Pro Max models could have up to 4 cameras, the earlier models could only choose one between the front and rear cameras) - Real-time transition among the external inputs, built-in cameras, and media in the Photo Library - Full Screen External HDMI & Wireless AirPlay via Screen Mirroring/AirPlay - Use the RTMP protocol which is used by most of the video platforms to 3 channel live streams, local record for backup, NDI or NDI|HX output at the same time - No need for cumbersome timeline operations, real-time playback to edit, getting video post-production easily - Valuable background music feature to easily create electronic albums with the Ken Burns special effects of photos - Customized and unlimited vector title and shape overlay with professional safety Down Stream Key(DSK) control - Independent and unlimited layers of translucent logo overlay and clock, countdown, and scoreboard - Support TopDirectorTitle App for remote title overlay via LAN, suitable for complex subtitle operations in live broadcasting - Perfectly embedded Apple Pencil (or use finger on the iPhone) to realize online sketch comments - Picture-in-picture effects for remote interviews, online teaching, video conferencing, etc, fully customizable video source, window size and position, distortion, dynamic background, edges, reflections, blur, and more - Used in conjunction with TopDirectorCam app for real-time slow-motion playback of live sports games - All operations support unlimited Undo and automatic alignment snap feature that all the professional people needed - Support the TALLY feature to mark the current PGM camera when switching among multiple cameras - Unique security protection keep maintaining output even in the background - No need to register, no any other subscription fees, one-time purchase for lifetime use Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Stream Studio

This app enables content creators to broadcast live streams to any RTMP-compatible platform. It offers a quick setup process and an intuitive interface for a seamless streaming experience. Designed for professionals and enthusiasts alike, it enhances live broadcasting capabilities.

Highlights
  • RTMP compatibility for any platform
  • Quick RTMP URL and stream key setup
  • Intuitive and modern user interface
  • Professional live streaming tool
  • Supports iPhone and iPad
Features
Read full description

Take your live streaming to the next level with Stream Studio, the ultimate tool for content creators, professionals, and streaming enthusiasts. Key Features: • RTMP Compatibility: Seamlessly stream to any platform that supports RTMP. • Quick Setup: Connect your RTMP URL and stream key in seconds. • Intuitive Interface: A sleek, modern user experience designed to maximize your productivity.

Screenshots

TopDirector (NDI,SRT,UVC,RTSP)4 screens
Stream Studio4 screens

Verdict

The call

The clearest difference is rating: Stream Studio at 5.0 against TopDirector (NDI,SRT,UVC,RTSP)'s 4.1. Stream Studio also leads on monetization model (free with in-app purchases vs paid). TopDirector (NDI,SRT,UVC,RTSP)'s advantage is update cadence (every 10 days vs every 6 months) and ratings volume (114 vs 2). On price, ads, in-app purchases 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. TopDirector (NDI,SRT,UVC,RTSP) sells 10 in-app purchases, starting at $49.99 per year and Stream Studio sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Stream Studio holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: TopDirector (NDI,SRT,UVC,RTSP) has 114 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

TopDirector (NDI,SRT,UVC,RTSP) ships an update every 10 days, Stream Studio every 6 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
TopDirector (NDI,SRT,UVC,RTSP) versus Stream Studio: the parameters behind the verdict, then further details
ParameterTopDirector (NDI,SRT,UVC,RTSP)Stream Studio
PriceFreeFree
Rating4.1 (114 ratings)5.0 (2 ratings) — better
Positive reviews37.5% of reviews—
Number of ratings114 — better2
Update frequencyEvery 10 days — betterEvery 6 months
AdsNoNo
In-app purchasesYesYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size98 MB40 MB
Age rating4+4+
DeveloperTopDirector CorporationLudovic Bouguerra

Bugs and requests

TopDirector (NDI,SRT,UVC,RTSP)

Reported bugs

17 issues
  • Crashes at opening on iPad Pro M2
  • iPad camera always 30fps despite correct config
  • App freezes when syncing iPad Pro with iPhone
  • App crashes every time after latest update
  • App won't open if 'Don't allow' is selected for album access
Show 12 more
  • NDI streaming to another computer does not work
  • Cannot choose save location for recorded files (reverts to camera roll, renames/changes resolution)
  • SRT does not work
  • SRT output livestream not supported
  • Audio of video clips does not work
  • Audio does not work
  • Video playback only works for clips under 10 seconds
  • App crashes when feeding in 5 to 6 cameras
  • App randomly crashes
  • Tally does not work
  • No audio from iPhones via NDI
  • App crashes on launch after update

Requested features

19 requests
  • PIP templates with square or round screens
  • Scrolling text in overlays
  • Ability to replay, back-forward, adjust speed, freeze
  • RTMP input support
  • OSC control for Stream Decks
Show 14 more
  • Tutorials on optimal NDI usage
  • Add a next cam option
  • Better character generator
  • Fix video playback for clips over 10 seconds
  • Improve bitrate for YouTube streaming
  • Add SRT output support
  • Improve audio functionality
  • More intuitive wireless camera setup
  • Provide how-to videos or tutorials
  • Allow recovery of previously purchased features
  • Implement a trial period
  • Fix tally functionality
  • Add audio support for NDI streams
  • Improve output section stability

Stream Studio

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

TopDirector (NDI,SRT,UVC,RTSP)

Subscriptions1
  • Unlock All Features$49.991 Year
One-time9
  • NDI and TALLY$4.99
  • Enable USB(UVC) Camera Input$4.99
  • Screen Mirroring/AirPlay$9.99
Show 6 more
  • PTZ Camera Control$9.99
  • Picture in Picture Watermark$14.99
  • Logo and Background Music$14.99
  • Video Scopes, Color Grading$14.99
  • UTitle, Title, NTitle, SuperFG$14.99
  • Unlimited PGM Duration$14.99
2 purchases

Stream Studio

Subscriptions2
  • Stream Studio Monthly3 Days trial$9.991 Month
  • Stream Studio Yearly3 Days trial$39.991 Year

Questions

Is TopDirector (NDI,SRT,UVC,RTSP) free?
TopDirector (NDI,SRT,UVC,RTSP) is free to download, with in-app purchases available.
Is Stream Studio free?
Stream Studio is free to download, with in-app purchases available.
Which has better reviews, TopDirector (NDI,SRT,UVC,RTSP) or Stream Studio?
Stream Studio is rated higher. TopDirector (NDI,SRT,UVC,RTSP) averages 4.1 out of 5 from 114 ratings, while Stream Studio averages 5.0 from 2 ratings.
Do TopDirector (NDI,SRT,UVC,RTSP) or Stream Studio have ads?
Neither TopDirector (NDI,SRT,UVC,RTSP) nor Stream Studio shows ads.
Which is updated more often, TopDirector (NDI,SRT,UVC,RTSP) or Stream Studio?
TopDirector (NDI,SRT,UVC,RTSP) ships an update every 10 days, and Stream Studio every 6 months. Most recently, TopDirector (NDI,SRT,UVC,RTSP) was updated on November 3, 2026 and Stream Studio on October 30, 2026.

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