BlendZ vs NDI Multiview
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BlendZ
Calculate the precise math needed for large, blended projection screens using multiple projectors. Input your desired screen dimensions, projector resolution, and number of projectors to get all the necessary information. Supports both feet and meters for your convenience.
- Calculate blended projection screen math
- Input screen dimensions
- Input projector resolution
- Specify number of projectors
- Supports feet and meters
- Generate PDF information sheets
- Draws grids with grayscale steps
Read full descriptionHide full description
Creativity frequently begins with a brilliant thought, rapidly followed by the frantic scribblings of pencil on paper, often accompanied by thumping's on a calculator. This is where BlendZ began. I wrote BlendZ to save me time working-out and re-calculating the math for large, widescreen, overlapping (blending) projectors, to make up screens larger than a single projector's image. If you need to work out the math for a wide screen projection surface using multiple projectors BlendZ is for you. To begin all you need to know is the desired width and height of the projection surface, the native chip resolution of the projectors (or output resolution of the source device) you are planning to use, and the number of projectors you think you need. Then, BlendZ will give you all the information you need. BlendZ works in both Feet and Metres, just choose your preferred flavour of measurement and off you go. Originally this application was written for the Mac and PC as a tool for the Project Managers of Creative Technology (www.ctinternational.com) and now I have released a mobile version for the iOS. Like the desktop version this will draw out the Grids,full with 8 or 16 step Grey-scale (horizontally or vertically) for ease of line up and if needed send out an information sheet as a PDF. Currently BlendZ only works out the stuff for a single row or column of projectors, at some point in the near future I plan to expand it to calculate projection arrays.
NDI Multiview
Monitor multiple NDI video sources simultaneously with advanced tools like vector scopes and histograms. Control PTZ cameras remotely and record up to nine inputs in H.264 or HEVC. Features include zoom, audio meters, and automatic NDI source discovery.
- Up to 9 NDI inputs multi-view
- PTZ remote control
- Vector scope, histogram, parade, waveform
- Simultaneous NDI recording
- Double-tap zoom
- Automatic NDI source discovery
Read full descriptionHide full description
- Up to 9 NDI inputs multi-view simultaneously - PTZ Control, focus, exposure, white-balance remote settings - Vector scope, histogram, parade and waveform for professional users - Up to 9 NDI inputs record simultaneously with H.264 or HEVC formats - Double-tap to zoom in for full-screen detail monitor - Supports NDI High Bandwidth(SpeedHQ), NDI HX2(H.264), NDI HX2(HEVC), NDI HX3(H.264), NDI HX3(HEVC) - Supports NDI low bandwidth mode - Supports action and title safe area display - With real-time audio VU meter monitor - Automatically find out all NDI sources in the current network, Extra IPs and NDI Discovery Server - List all the NDI metadata - No need to register, no subscription fees, one-time purchase for lifetime use
Screenshots
Verdict
The clearest difference is price: NDI Multiview at Free against BlendZ's $0.99. NDI Multiview also leads on update cadence (every 2 weeks vs every 4 months) and rating (4.0 vs 3.7). BlendZ's advantage is in-app purchases (none vs 4) and review sentiment (75% vs 46%). On ads, monetization model 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
NDI Multiview is free to download; BlendZ costs $0.99 up front. NDI Multiview sells 4 one-off in-app purchases. BlendZ asks for nothing beyond the download.
NDI Multiview holds the better App Store score, 4.0 against 3.7. That said, the two scores are not equally well evidenced: NDI Multiview has 128 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 75% of BlendZ's written reviews are positive against 46% of NDI Multiview's, so the app with the better star average is not the one people write more warmly about.
BlendZ ships an update every 4 months, NDI Multiview every 2 weeks. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.
| Parameter | BlendZ | NDI Multiview |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.7 (3 ratings) | 4.0 (128 ratings) — better |
| Positive reviews | 75.0% of reviews — better | 45.9% of reviews |
| Number of ratings | 3 | 128 — better |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 5 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Darren Alexander | TopDirector Corporation |
Customer experience
BlendZ
NDI Multiview
Bugs and requests
BlendZ
Not enough reviews yet to summarise bugs or requests.
NDI Multiview
Reported bugs
9 issues- Watermark remains after purchase
- App crashes constantly
- PTZ control is uncontrollable
- Purchased PTZ won't restore
- App opens and crashes after purchase
Show 4 moreShow fewer
- Discovery of cameras broken/slow
- Audio not in sync with video
- Stopped reading sources
- Payment accepted but watermark remains
Requested features
3 requests- Bundle watermark removal with PTZ control
- Adjust pricing for bundled features
- Apple TV version planned?
In-app purchases
BlendZ
No in-app purchases
NDI Multiview
- Professional Video Scopes$9.99
- PTZ Camera Control$9.99
- Watermark and Full Screen Zoom$14.99
Show 1 moreShow fewer
- Enable Record/Snapshot$19.99








