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 8 days vs every 3 months) and review sentiment (34% vs 23%). OBS Controller's advantage is in-app purchases (none vs 10) and chart position (#159 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 — 52 and 113 respectively. Written reviews are what separate them: 23% of OBS Controller's written reviews are positive against 34% of TopDirector (NDI,SRT,UVC,RTSP)'s.

UpkeepUpdate frequency

OBS Controller ships an update every 3 months, TopDirector (NDI,SRT,UVC,RTSP) every 8 days. The most recent releases landed on September 9, 2026 and September 17, 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 (52 ratings) — better4.1 (113 ratings)
Positive reviews23.1% of reviews34.2% of reviews — better
Number of ratings52113 — better
Update frequencyEvery 3 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
Best chart rank#159 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size29 MB97 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 ratings113 ratings
Positive71.7%
Neutral10.6%
Negative17.7%
Written reviews38 reviews
Positive34.2%
Neutral13.2%
Negative52.6%

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 52 ratings, while TopDirector (NDI,SRT,UVC,RTSP) averages 4.1 from 113 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 8 days. Most recently, OBS Controller was updated on September 9, 2026 and TopDirector (NDI,SRT,UVC,RTSP) on September 17, 2026.

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