BlendZ vs NDI Player
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
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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 Player
This tool transforms your device into a convenient NDI source for live production. Create customized playlists, support multiple NDI formats, and utilize Apple Pencil for annotations. It offers seamless HDMI and AirPlay output with real-time audio monitoring.
- NDI source creation
- Customized playlist
- Screen mirroring/AirPlay output
- Apple Pencil/Finger annotation
- Multi-NDI source support
- Real-time audio VU meter
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- If you are working with NDI, this is your MUST-HAVE tool - Create the most convenient and affordable NDI source instantly - Both landscape and portrait output support - Fully customized playlist, a powerful video player for live production - Supports multitasking on iPad, multiply NDI sources simultaneously - Supports Full NDI, NDI HX H.264, and NDI HX HEVC, display connection tally status - Supports Apple Pencil or Finger markup, drawing, and annotation - Supports full-screen HDMI & ScreenMirroring/AirPlay output - With real-time audio VU meter monitor - No need to register, no subscription fees, one-time purchase for lifetime use
Screenshots
Verdict
BlendZ and NDI Player both sit at 3.7 stars, but that hides the real split: 75% of BlendZ's written reviews are positive against 25% of NDI Player's. BlendZ also leads on in-app purchases (none vs 4) and iOS requirement (9.0 vs 16.6). NDI Player's advantage is price (Free vs $0.99) and update cadence (fortnightly vs every 4 months). On rating, 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
NDI Player is free to download; BlendZ costs $0.99 up front. NDI Player sells 4 one-off in-app purchases. BlendZ asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 3.7 for BlendZ against 3.8 for NDI Player. That said, the two scores are not equally well evidenced: NDI Player has 18 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 75% of BlendZ's written reviews are positive against 25% of NDI Player's.
BlendZ ships an update every 4 months, NDI Player fortnightly. The most recent releases landed on September 8, 2026 and August 17, 2026 respectively.
| Parameter | BlendZ | NDI Player |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.7 (3 ratings) | 3.8 (18 ratings) — better |
| Positive reviews | 75.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 3 | 18 — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 5 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Darren Alexander | TopDirector Corporation |
Customer experience
BlendZ
NDI Player
In-app purchases
BlendZ
No in-app purchases
NDI Player
- Using Apple Pencil or Finger$4.99
- Movie Playback$9.99
- HDMI & ScreenMirroring/AirPlay$9.99
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- List Playback$14.99
