Comparison

OBS Controller vs TopDirector (NDI,SRT,UVC,RTSP)

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

Head to head
About

OBS Controller

Control your OBS Studio scenes and audio directly from your mobile device. This app allows you to switch scenes, manage audio sources, and control stream outputs with ease. It offers features like hiding unwanted scenes and delaying commands for synchronization.

Highlights
  • Mobile OBS scene switching
  • Control stream/recording output
  • Mute audio sources
  • Hide unwanted scenes
  • Configure command delays
  • Show/hide scene elements
Features
Read full description

Simple is better. This app is focused on having a simple mobile scene switcher in OBS. In OBS v28 and later it should work out of the box. For earlier versions, it requires the obs-websocket plugin to be installed. You can download it here: https://obsproject.com/forum/resources/obs-websocket-remote-control-obs-studio-from-websockets.466/ - Hide scenes that you don't want to accidentally switch to - Control your stream, recording or virtual camera output - Show/hide individual scene elements - Mute audio sources - Configure a delay for the commands in case you want to sync scene switches with camera delays

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/

Screenshots

OBS Controller4 screens
TopDirector (NDI,SRT,UVC,RTSP)4 screens

Verdict

The call

The clearest difference is price: TopDirector (NDI,SRT,UVC,RTSP) at Free against OBS Controller's $1.99. TopDirector (NDI,SRT,UVC,RTSP) also leads on update cadence (every 10 days vs every 3 months) and review sentiment (38% vs 23%). OBS Controller's advantage is in-app purchases (none vs 10) and chart position (#186 vs unranked). On rating, ratings volume, ads and monetization model 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

TopDirector (NDI,SRT,UVC,RTSP) is free to download; OBS Controller costs $1.99 up front. TopDirector (NDI,SRT,UVC,RTSP) sells 10 in-app purchases, starting at $49.99 per year. OBS Controller asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.2 for OBS Controller against 4.1 for TopDirector (NDI,SRT,UVC,RTSP). Both are backed by a comparable volume of ratings — 53 and 114 respectively. Written reviews are what separate them: 23% of OBS Controller's written reviews are positive against 38% of TopDirector (NDI,SRT,UVC,RTSP)'s.

UpkeepUpdate frequency

OBS Controller ships an update every 3 months, TopDirector (NDI,SRT,UVC,RTSP) every 10 days. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

Scorecard6 real differences · 5 level
OBS Controller versus TopDirector (NDI,SRT,UVC,RTSP): the parameters behind the verdict, then further details
ParameterOBS ControllerTopDirector (NDI,SRT,UVC,RTSP)
Price$1.99Free — better
Rating4.2 (53 ratings) — better4.1 (114 ratings)
Positive reviews23.1% of reviews37.5% of reviews — better
Number of ratings53114 — better
Update frequencyEvery 3 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
Best chart rank#186 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size29 MB98 MB
Age rating4+4+
DeveloperFallen Starlight ABTopDirector Corporation

Customer experience

OBS Controller

All ratings52 ratings
Positive78.8%
Neutral1.9%
Negative19.2%
Written reviews13 reviews
Positive23.1%
Neutral7.7%
Negative69.2%

TopDirector (NDI,SRT,UVC,RTSP)

All ratings114 ratings
Positive71.1%
Neutral10.5%
Negative18.4%
Written reviews40 reviews
Positive37.5%
Neutral12.5%
Negative50.0%

Bugs and requests

OBS Controller

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

OBS Controller

No 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

Questions

Is OBS Controller free?
OBS Controller costs $1.99, with no in-app purchases.
Is TopDirector (NDI,SRT,UVC,RTSP) free?
TopDirector (NDI,SRT,UVC,RTSP) is free to download, with in-app purchases available.
Which has better reviews, OBS Controller or TopDirector (NDI,SRT,UVC,RTSP)?
OBS Controller is rated higher. OBS Controller averages 4.2 out of 5 from 53 ratings, while TopDirector (NDI,SRT,UVC,RTSP) averages 4.1 from 114 ratings.
Do OBS Controller or TopDirector (NDI,SRT,UVC,RTSP) have ads?
Neither OBS Controller nor TopDirector (NDI,SRT,UVC,RTSP) shows ads.
Which is updated more often, OBS Controller or TopDirector (NDI,SRT,UVC,RTSP)?
OBS Controller ships an update every 3 months, and TopDirector (NDI,SRT,UVC,RTSP) every 10 days. Most recently, OBS Controller was updated on October 25, 2026 and TopDirector (NDI,SRT,UVC,RTSP) on October 22, 2026.

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