USB Camera to NDI vs OBS 4K
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
USB Camera to NDI
This app allows you to monitor and convert UVC cameras to NDI streams in real-time. It supports various NDI formats, offers simultaneous recording to Photos, and can extend camera capabilities using HDMI adapters.
- Monitor UVC cameras for free
- Switch between multiple UVC cameras
- Real-time NDI conversion
- Supports FULL NDI, NDI HX H.264, NDI HX HEVC
- Record to Photos simultaneously
- NDI tally status indicator
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- Monitoring any UVC camera for free - Switch in multiple UVC cameras - Audio UV meters included - Record to Photos simultaneously - Converts UVC camera to NDI in real-time, supports FULL NDI, NDI HX H.264, NDI HX HEVC - NDI tally status indicator - Use HDMI -> USB adapter to extend more traditional cameras, no longer need an expensive HDMI-NDI converter any more - Use a USB-C adapter with HDMI output for external full-screen monitoring - Use Apple TV, Google TV Stick or Amazon Fire TV Stick for wireless AirPlay monitoring
OBS 4K
Transform your iPhone into a professional 4K webcam for your Mac. Stream in high resolution with ultra-low latency and advanced controls. Ideal for video conferencing, live streaming, and content creation.
- 4K, 1080p, 720p streaming
- Ultra-low latency
- H.265 hardware encoding
- Multiple lens support
- Full zoom and exposure control
- Custom stream profiles
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Turn your iPhone into a professional 4K camera for your Mac. OBS 4K streams your iPhone camera in stunning 4K resolution over USB or WiFi, with ultra-low latency H.265 hardware encoding. KEY FEATURES: • 4K, 1080p, and 720p streaming over USB or WiFi • H.265 hardware encoding for crystal-clear quality at minimal bandwidth • Ultra-low latency — see your camera feed in real time • Multiple lens support — switch between Ultra Wide, Wide, and Telephoto • Screen curtain mode to save battery while streaming PRO FEATURES: • 60 fps smooth capture for professional-quality video • Full zoom and exposure control with real-time adjustments • Focus and exposure lock for consistent shots • Custom stream profiles for quick setup • Advanced ISO, white balance, and torch controls PERFECT FOR: • Video conferencing (Zoom, Google Meet, Microsoft Teams) • Live streaming (OBS Studio, Streamlabs) • Content creation and YouTube recording • FaceTime calls in stunning quality • Professional video production OBS 4K creates a virtual camera on your Mac, so any app that uses a webcam can use your iPhone’s powerful camera system. Connect via USB for the best quality, or go wireless with WiFi. Download now and transform your iPhone into the ultimate webcam. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ioscorner.com/privacy.html
Screenshots
Verdict
The clearest difference is rating: OBS 4K at 4.7 against USB Camera to NDI's 3.9. OBS 4K also leads on update cadence (weekly vs every 5 weeks). USB Camera to NDI's advantage is ratings volume (102 vs 25). On price, review sentiment, ads and in-app purchases 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. USB Camera to NDI sells 4 one-off in-app purchases and OBS 4K sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
OBS 4K holds the better App Store score, 4.7 against 3.9. Both are backed by a comparable volume of ratings — 102 and 25 respectively. Written reviews complicate that: 25% of USB Camera to NDI's written reviews are positive against 22% of OBS 4K's, so the app with the better star average is not the one people write more warmly about.
USB Camera to NDI ships an update every 5 weeks, OBS 4K weekly. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.
| Parameter | USB Camera to NDI | OBS 4K |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (102 ratings) | 4.7 (25 ratings) — better |
| Positive reviews | 25.0% of reviews — better | 22.2% of reviews |
| Number of ratings | 102 — better | 25 |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, Mac |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | TopDirector Corporation | Huseyin Bagana |
Customer experience
USB Camera to NDI
OBS 4K
In-app purchases
USB Camera to NDI
- Remove Ads$0.99
- Enable NDI Sending$4.99
- Enable Recording and Snapshot$9.99
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- HDMI, ScreenMirroring, AirPlay$9.99
OBS 4K
- OBS 4K Pro Monthly$5.991 Month
- OBS 4K Pro Yearly7 Days trial$79.991 Year
- OBS 4K Pro Lifetime$103.99
Questions
Is USB Camera to NDI free?
Is OBS 4K free?
Which has better reviews, USB Camera to NDI or OBS 4K?
Do USB Camera to NDI or OBS 4K have ads?
Which is updated more often, USB Camera to NDI or OBS 4K?
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