# NDI Test Patterns vs TopDirectorCam(NDI/SRT Camera)

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.

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.

## The numbers

| Metric | NDI Test Patterns | TopDirectorCam(NDI/SRT Camera) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ndi-test-patterns/id1571995248/reviews)** | [4.5 (12 ratings)](https://appshunter.io/ios/app/topdirectorcamndisrt-camera/id1581278019/reviews) |
| Number of ratings | 2 | **12** |
| Positive reviews | **100.0% of reviews** | 63.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 57 MB |
| Requires iOS | **14.4** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vi(z)rt, Inc](https://appshunter.io/developer/573312611) | [TopDirector Corporation](https://appshunter.io/developer/1581209934) |

## What reviewers say

### NDI Test Patterns

[App page](https://appshunter.io/ios/app/ndi-test-patterns/id1571995248)

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.

**Highlights:** Mobile NDI test pattern source, Audio test tone generation, Custom NDI slideshows, High-resolution photo support, Automatic NDI device recognition, iPhone and iPad compatible

**Features:** Vision Pro support

**In-app purchases:** none


### TopDirectorCam(NDI/SRT Camera)

[App page](https://appshunter.io/ios/app/topdirectorcamndisrt-camera/id1581278019)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ads Banner | $0.99 | one-time |
| NDI(Low Latency)+Tally Prompt | $4.99 | one-time |
| Teleprompter | $4.99 | one-time |
| Screen Mirroring/AirPlay | $4.99 | one-time |
| Movie Playback and Slow Motion | $9.99 | one-time |
| Chroma Key | $9.99 | one-time |


## Frequently asked questions

### Is NDI Test Patterns free?

NDI Test Patterns is free to download, with no in-app purchases.

### Is TopDirectorCam(NDI/SRT Camera) free?

TopDirectorCam(NDI/SRT Camera) is free to download, with in-app purchases available.

### Which has better reviews, NDI Test Patterns or TopDirectorCam(NDI/SRT Camera)?

NDI Test Patterns is rated higher. NDI Test Patterns averages 5.0 out of 5 from 2 ratings, while TopDirectorCam(NDI/SRT Camera) averages 4.5 from 12 ratings.

### Do NDI Test Patterns or TopDirectorCam(NDI/SRT Camera) have ads?

Neither NDI Test Patterns nor TopDirectorCam(NDI/SRT Camera) shows ads.

### Which is updated more often, NDI Test Patterns or TopDirectorCam(NDI/SRT Camera)?

NDI Test Patterns ships an update every 4 months, and TopDirectorCam(NDI/SRT Camera) every 2 months. Most recently, NDI Test Patterns was updated on October 6, 2026 and TopDirectorCam(NDI/SRT Camera) on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*