NDI Test Patterns vs TopDirectorCam(NDI/SRT Camera)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NDI Test Patterns
Transform your mobile device into a professional NDI® test pattern generator. Send video and audio test signals, or create custom slideshows using your own images. Ideal for live video production workflows.
- Mobile NDI test pattern source
- Audio test tone generation
- Custom NDI slideshows
- High-resolution photo support
- Automatic NDI device recognition
- iPhone and iPad compatible
Read full descriptionHide full description
The official NDI® Test Patterns application. Turn your phone or tablet into a test pattern source for any NDI® receiver. The app also supports the sending of an audio test tone at different standard volumes which is useful when checking receiver audio levels. Finally enjoy the ability to add pictures from your photo library enabling custom NDI® slide shows. NDI® (Network Device Interface) is a low latency IP video protocol developed especially for professional live video production, and is supported by an extensive list of broadcast systems from many manufacturers. NDI® HX Camera turns your iOS imaging devices into high-quality wireless a/v sources for NDI-enabled broadcast systems and software on the same network. Your device’s output is automatically recognized by NDI-enabled* video systems, ready to be mixed into live shows or even for use as a web camera when used in conjunction with NDI® Tools (ndi.tv/tools). * Note: Requires support for NDI v.4 or better. Basic Features • Easy to use • iPhone and iPad compatibility • Access your photo library to stream user photos over NDI • Multiple standard volume choices for the audio test tone Advanced Features • Support for high resolution photos • Automatic NDI device recognition Support • Knowledge Base Articles https://support.newtek.com/hc/en-us/search?utf8=%E2%9C%93&query=iphone&commit=Search • NDI Forums https://forums.newtek.com/forumdisplay.php/360-NDI-%28Network-Device-Interface%29
TopDirectorCam(NDI/SRT Camera)
This app functions as a wireless camera input for another application, allowing users to switch between live camera feeds and local media. It offers instant playback control, speed modification, and supports various resolutions and frame rates for professional video production.
- Wireless camera input
- Switch between camera and local movie
- Instant playback and speed control
- Chroma Key for virtual studio
- Teleprompter functionality
- NDI compatibility
- Support for multiple resolutions and frame rates
Read full descriptionHide full description
- Used in conjunction with TopDirector App (Download separately) as a wireless camera input - Switch between camera and local movie - Instantly playback the recording camera content or original local movie, instantly change the playback speed, instantly modify - playback in point and out point, best for real-time slow-motion playback of live sports games - Compatible both with NDI, NDI|HX H.264, NDI|HX HEVC, can be used with any other standard NDI products - 720p, 1080p, and 4K resolution. 24, 25, 30, 50, 60fps support - Purchase the Chroma Key option to build an instant virtual studio - Support the TALLY feature to mark the current PGM camera - Seamlessly embed valuable Teleprompter feature - Support local records for backup simultaneously
Screenshots
Verdict
The clearest difference is review sentiment: NDI Test Patterns at 100% against TopDirectorCam(NDI/SRT Camera)'s 64%. NDI Test Patterns also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 6). TopDirectorCam(NDI/SRT Camera)'s advantage is ratings volume (12 vs 2). On price, update cadence, 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. TopDirectorCam(NDI/SRT Camera) sells 6 one-off in-app purchases. NDI Test Patterns asks for nothing beyond the download.
NDI Test Patterns holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: TopDirectorCam(NDI/SRT Camera) has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of NDI Test Patterns's written reviews are positive against 64% of TopDirectorCam(NDI/SRT Camera)'s.
NDI Test Patterns ships an update every 4 months, TopDirectorCam(NDI/SRT Camera) every 2 months. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.
| Parameter | NDI Test Patterns | TopDirectorCam(NDI/SRT Camera) |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.5 (12 ratings) |
| Positive reviews | 100.0% of reviews — better | 63.6% of reviews |
| Number of ratings | 2 | 12 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.4 — better | 16.6 |
| Further details — not scored | ||
| Size | 10 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Vi(z)rt, Inc | TopDirector Corporation |
Customer experience
NDI Test Patterns
TopDirectorCam(NDI/SRT Camera)
In-app purchases
NDI Test Patterns
No in-app purchases
TopDirectorCam(NDI/SRT Camera)
- Ads Banner$0.99
- NDI(Low Latency)+Tally Prompt$4.99
- Teleprompter$4.99
Show 3 moreShow fewer
- Screen Mirroring/AirPlay$4.99
- Movie Playback and Slow Motion$9.99
- Chroma Key$9.99
Questions
Is NDI Test Patterns free?
Is TopDirectorCam(NDI/SRT Camera) free?
Which has better reviews, NDI Test Patterns or TopDirectorCam(NDI/SRT Camera)?
Do NDI Test Patterns or TopDirectorCam(NDI/SRT Camera) have ads?
Which is updated more often, NDI Test Patterns or TopDirectorCam(NDI/SRT Camera)?
Other comparisons















