TopDirector (NDI,SRT,UVC,RTSP) vs Obsbot Start
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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- 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/
Obsbot Start
Control your OBSBOT camera with an intuitive interface. Enhance your livestreaming experience by unleashing AI capabilities, easily switching between landscape and portrait modes, and customizing image parameters on the fly. Stream to popular social platforms with a single tap.
- AI feature control
- One-click landscape/portrait switching
- Customizable image parameters
- Direct social platform streaming
- Easy-to-use interface
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Mastermind Your OBSBOT Camera Obsbot Start is an exclusive application designed for OBSBOT camera. With its easy-to-use interface and powerful features. Your camera livestreaming experience can be significantly improved with minimal effort. Unleash AI Capabilities Collocating with built-in AI features in OBSBOT camera, Obsbot start can maximize the hidden underlying power of the device and makes the AI features controllable smoothly and conveniently. Start Livestreaming Anywhere Obsbot Start offers internal support for the most popular social livestream platforms. Preset the social accounts, and the livestream signal could instantly starts and be on air within the blinks, with only a tap. Landscape and Portrait in One-Click Obsbot Start is compatible with both landscape and portrait modes. Using the orientation button in the software, you can smoothly switch between landscape/portrait modes to meet different video recording or live streaming needs. Customize Parameters Anytime Say goodbye to immutable image settings. With Obsbot Start, you can customize image parameters whether you're on Air or not, and apply them instantaneously whenever you need. OBSBOT hopes to take you to enjoy the fun of video shooting and livestreaming in a simpler and more energetic way, record and share your life moments on air with dynamic video language and limitless imagination. If you have any suggestions in the process of using OBSBOT, please feel free to write to service@obsbot.com. We value every communication with you.
Screenshots
Verdict
The clearest difference is rating: TopDirector (NDI,SRT,UVC,RTSP) at 4.1 against Obsbot Start's 2.2. TopDirector (NDI,SRT,UVC,RTSP) also leads on review sentiment (38% vs 19%) and update cadence (every 10 days vs monthly). Obsbot Start's advantage is in-app purchases (none vs 10) and iOS requirement (15.0 vs 17.6). 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
Both are free to download. TopDirector (NDI,SRT,UVC,RTSP) sells 10 in-app purchases, starting at $49.99 per year. Obsbot Start asks for nothing beyond the download.
TopDirector (NDI,SRT,UVC,RTSP) holds the better App Store score, 4.1 against 2.2. Both are backed by a comparable volume of ratings — 114 and 25 respectively. Written reviews point the same way: 38% of TopDirector (NDI,SRT,UVC,RTSP)'s written reviews are positive against 19% of Obsbot Start's.
TopDirector (NDI,SRT,UVC,RTSP) ships an update every 10 days, Obsbot Start monthly. Both last shipped on November 3, 2026.
| Parameter | TopDirector (NDI,SRT,UVC,RTSP) | Obsbot Start |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (114 ratings) — better | 2.2 (25 ratings) |
| Positive reviews | 37.5% of reviews — better | 19.4% of reviews |
| Number of ratings | 114 — better | 25 |
| Update frequency | Every 10 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 98 MB | 131 MB |
| Age rating | 4+ | 4+ |
| Developer | TopDirector Corporation | Remo Tech Co.,Ltd |
Customer experience
TopDirector (NDI,SRT,UVC,RTSP)
Obsbot Start
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
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- 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
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- 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
Obsbot Start
Not enough reviews yet to summarise bugs or requests.
In-app purchases
TopDirector (NDI,SRT,UVC,RTSP)
- Unlock All Features$49.991 Year
- NDI and TALLY$4.99
- Enable USB(UVC) Camera Input$4.99
- Screen Mirroring/AirPlay$9.99
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- 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
Obsbot Start
No in-app purchases
Questions
Is TopDirector (NDI,SRT,UVC,RTSP) free?
Is Obsbot Start free?
Which has better reviews, TopDirector (NDI,SRT,UVC,RTSP) or Obsbot Start?
Do TopDirector (NDI,SRT,UVC,RTSP) or Obsbot Start have ads?
Which is updated more often, TopDirector (NDI,SRT,UVC,RTSP) or Obsbot Start?
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