NDI Screen Capture vs Test Signal Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NDI Screen Capture
Capture iOS and iPadOS screen content in real-time and stream it as NDI output. Supports NDI HX H.264 and HEVC, with audio and microphone input. Ideal for e-learning and game demonstrations.
- Real-time screen capture
- NDI output streaming
- NDI HX H.264/HEVC support
- Lock screen rotation
- Audio and mic input
- Easy to use
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- Capture iOS & iPadOS full or partial screen content in realtime - Stream NDI output in realtime - NDI HX H.264 and NDI HX HEVC support - Locking screen rotation while capturing - Audio and Mic input support - Easy to use for e-Learning or game demonstration
Test Signal Generator
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Test Signal Generator helps you validate displays, projectors, LED walls, streaming workflows and production systems using professional broadcast-style test signals. Generate industry-standard test patterns directly from your iPhone, iPad or Mac and send them to external displays via HDMI or connected video hardware. Features include: • Color Bars • Greyscale • Full-screen color fields • Zone Plate • Gradient Banding Test • Motion Test Patterns • Moving Pixel Test • Timecode Overlay • Clock Overlay • Audio Reference Signals • Geometry Guides • Safe Area Guides • Frame Boundary Guides • Social Media Framing Guides (9:16, 4:5, 1:1) Use Signal Generator to: • Align projectors • Verify LED wall processors • Detect scaling issues • Check overscan and cropping • Validate signal chains • Test audio/video synchronization • Troubleshoot streaming workflows • Prepare live productions Pro features unlock additional test patterns, advanced guides, audio references, custom branding. Designed for broadcasters, AV professionals, event technicians, streamers and content creators.
Screenshots
Verdict
The clearest difference is rating: Test Signal Generator at 4.0 against NDI Screen Capture's 3.0. NDI Screen Capture's advantage is ratings volume (11 vs 1) and iOS requirement (17.6 vs 26.5). On price, ads, in-app purchases 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. NDI Screen Capture sells 2 one-off in-app purchases and Test Signal Generator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Test Signal Generator holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: NDI Screen Capture has 11 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | NDI Screen Capture | Test Signal Generator |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (11 ratings) | 4.0 (1 ratings) — better |
| Positive reviews | 27.3% of reviews | — |
| Number of ratings | 11 — better | 1 |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.6 — better | 26.5 |
| Further details — not scored | ||
| Size | 49 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | TopDirector Corporation | Praetorius GmbH |
In-app purchases
NDI Screen Capture
- Remove One Minute Limit$4.99
- Enable Partial Screen Capture$4.99
Test Signal Generator
- Signal Generator Pro$4.99
Questions
Is NDI Screen Capture free?
Is Test Signal Generator free?
Which has better reviews, NDI Screen Capture or Test Signal Generator?
Do NDI Screen Capture or Test Signal Generator have ads?
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