# BlendZ

> Calculate projection screen math for multi-projector setups. (iPhone/iPad app by Darren Alexander.)

- Source: https://appshunter.io/ios/app/blendz/id960352638 (this page in markdown: same URL + `.md`)
- Developer: [Darren Alexander](https://appshunter.io/developer/946616105)
- Category: Photo & Video, Utilities
- Price: $0.99
- Rating: 3.70/5 from 3 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 5 MB
- Languages: American English
- Released: 2015-02-04
- Data updated: 2026-08-26
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/blendz/id960352638/reviews.md

## What is BlendZ?

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.

## Key features

- 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

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/blendz/id960352638/reviews.md

### 5/5 — Parou

*2019-11-21*

Bom dia!! 
Depois da nova atualizaçao do iPhone, o app parou de funcionar!! 
Quando vão resolver ?

### 5/5 — Duder has no idea what he is talking about.

*2019-03-06*

The second reviewer must not know how to use the app. I have used this app for years and it has always worked. 
It’s a great app and it helps me every time I use it to make sure my numbers are right.

### 1/5 — Horrible. Do Not Waste Your Money

*2018-08-03*

Doesn’t work right. Difficult to enter info. Won’t return values for higher pixel counts. 

Worthless. 

Buy the Alford app instead.

### 5/5 — Simply works

*2015-02-03*

the patterns this app generates simply works! Cant wait to add it on my iPad as well

## Frequently asked questions about BlendZ

### What is BlendZ used for?

BlendZ is used to calculate the necessary math for setting up large, blended projection screens with multiple projectors. It helps determine screen dimensions, projector resolution, and the number of projectors needed for your setup.

### What information does BlendZ require?

To use BlendZ, you need to know the desired width and height of your projection surface, the native chip resolution of your projectors (or the output resolution of your source device), and the number of projectors you plan to use.

### Does BlendZ support different measurement units?

Yes, BlendZ works in both Feet and Meters. You can choose your preferred unit of measurement before starting your calculations.

### Can BlendZ help with projector alignment?

Yes, the mobile version of BlendZ can draw out grids, complete with 8 or 16 step grayscale (horizontally or vertically), which aids in the ease of projector line-up.

### Can I save the information calculated by BlendZ?

Yes, if needed, BlendZ can send out an information sheet as a PDF, allowing you to save and share your projection setup calculations.

### What devices is BlendZ compatible with?

BlendZ is compatible with iPhone, iPad, and iPod devices.

### How much does BlendZ cost?

BlendZ is a paid application, priced at $0.99.

### Does BlendZ have ads?

No, BlendZ does not contain advertisements.

## Version history (last 5 releases)

### 1.0.7 — 2022-11-28

I now dynamically check if your device is able to draw the grids, if it can it will if it can't well then you will need to grab the desktop version.
I also now share the files rather than emailing them - as I used to only check that you had the default iOS Mail set up, if you did you could email if you didn't then you were unable to, now it doesn't matter BUT if you see the button saying Share / Email then holding the button down will bring up the email dialogue so that you can email it, I still only check for the default Mail app to be set up, but at least you can share it.

### 1.0.5 — 2021-03-06

Fixed a bug with the selection of the text entry boxes, now just tapping on them brings up the number entry dialog.

### 1.0.4 — 2015-09-29

Was asked to provide an Option for Smaller centre circles, and also the ability to change the border to Red for the generated Grid, so those options have been added. These can now be selected from the slide switches on the Grid Options page.

### 1.0.3 — 2015-09-12

Fixed a bug spotted by a user with a European keyboard that doesn't have a . in the numeric keypad.

### 1.0.2 — 2015-05-03

Nothing that most users would notice - some code tidying up, and fixed a small programming error that let the user try to email a grid even if no email was set up, this would cause Blendz to quit.

## Apps similar to BlendZ

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [White Balance Kelvin Meter](https://appshunter.io/ios/app/white-balance-kelvin-meter/id6443791592) | 4.7 (508) | Free | Photo & Video |
| [Vxio](https://appshunter.io/ios/app/vxio/id6475702074) | 4.9 (70) | Free | Photo & Video |
| [Lightcraft Jetset](https://appshunter.io/ios/app/lightcraft-jetset/id1634621836) | 4.3 (24) | Free | Photo & Video |
| [Stream Studio NDI OBS Camera](https://appshunter.io/ios/app/stream-studio-ndi-obs-camera/id6473455859) | 3.0 (4) | Free | Photo & Video |
| [NDI Player](https://appshunter.io/ios/app/ndi-player/id1644447464) | 3.8 (18) | Free | Photo & Video |
| [PTZControl Pro 2 by PTZOptics™](https://appshunter.io/ios/app/ptzcontrol-pro-2-by-ptzoptics/id1636996452) | 3.9 (17) | Free | Photo & Video |

## More apps by Darren Alexander

- [FidoLED](https://appshunter.io/ios/app/fidoled/id961615228)
- [M2 Calculator](https://appshunter.io/ios/app/m2-calculator/id1035183544)

All apps by Darren Alexander: https://appshunter.io/developer/946616105

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*