Comparison

BlendZ vs Stream Studio NDI OBS Camera

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read 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.

About

Stream Studio NDI OBS Camera

Transform your iPhone or iPad into a professional camera for presentations, tutorials, and gaming. This app enables real-time streaming to NDI or RTSP-enabled devices with high-quality, low-latency video. Its user-friendly interface and customizable settings make it accessible for all users.

Highlights
  • Seamless camera casting via NDI/RTSP
  • High-quality, low-latency streaming
  • User-friendly interface
  • Customizable resolution and frame rate
  • Wide compatibility with NDI/RTSP receivers
  • Privacy and security features
Read full description

Bring your presentations, tutorials, gaming sessions, and more to life with Stream Studio NDI Camera! Our app allows you to effortlessly cast your iPhone or iPad screen using the powerful and versatile NDI (Network Device Interface) protocol, as well as the widely supported RTSP (Real-Time Streaming Protocol). Whether you’re a content creator, educator, or professional, Stream Studio NDI Camera is the perfect tool to share your camera in real-time with any NDI or RTSP-enabled device. Features: • Seamless Camera Casting: Easily broadcast your iPhone or iPad camera to any NDI or RTSP-compatible device on the same network. • High-Quality Streaming: Experience low-latency and high-definition streaming, ensuring your content is delivered with clarity and precision. • User-Friendly Interface: Simple and intuitive design makes camera casting accessible to everyone, regardless of technical expertise. • Customizable Settings: Adjust resolution, frame rate, and more to match your specific needs and preferences. • Wide Compatibility: Works with popular NDI and RTSP receivers, including software and hardware solutions for professional environments. • Privacy and Security: Stream with confidence knowing your data is secure and only shared with your chosen receivers. How It Works: 1. Download and Install: Get Stream Studio NDI Camera from the App Store and install it on your iPhone or iPad. 2. Connect to Wi-Fi: Ensure your device is connected to the same Wi-Fi network as your NDI or RTSP receiver. 3. Launch the App: Open Stream Studio NDI Camera and start your camera casting session with a single tap. 4. Select Your Receiver: Choose your target NDI or RTSP device from the list and start streaming your camera feed in real-time.

Screenshots

BlendZ4 screens
Stream Studio NDI OBS Camera3 screens

Verdict

The call

The clearest difference is review sentiment: BlendZ at 75% against Stream Studio NDI OBS Camera's 0%. BlendZ also leads on rating (3.7 vs 3.0) and in-app purchases (none vs 3). Stream Studio NDI OBS Camera's advantage is price (Free vs $0.99) and update cadence (weekly vs every 4 months). On ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Stream Studio NDI OBS Camera is free to download; BlendZ costs $0.99 up front. Stream Studio NDI OBS Camera sells 3 in-app purchases, starting at $9.99 per month. BlendZ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

BlendZ holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews point the same way: 75% of BlendZ's written reviews are positive against 0% of Stream Studio NDI OBS Camera's.

UpkeepUpdate frequency

BlendZ ships an update every 4 months, Stream Studio NDI OBS Camera weekly. The most recent releases landed on October 10, 2026 and September 27, 2026 respectively.

Scorecard7 real differences · 3 level
BlendZ versus Stream Studio NDI OBS Camera: the parameters behind the verdict, then further details
ParameterBlendZStream Studio NDI OBS Camera
Price$0.99Free — better
Rating3.7 (3 ratings) — better3.0 (4 ratings)
Positive reviews75.0% of reviews — better0.0% of reviews
Number of ratings34 — better
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better16
Further details — not scored
Size5 MB82 MB
Age rating4+4+
DeveloperDarren AlexanderLudovic Bouguerra

Customer experience

BlendZ

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Stream Studio NDI OBS Camera

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

BlendZ

No in-app purchases

3 purchases

Stream Studio NDI OBS Camera

Subscriptions2
  • Pro3 Days trial$9.991 Month
  • Pro yearly3 Days trial$44.991 Year
One-time1
  • Pro Lifetime$59.99

Questions

Is BlendZ free?
BlendZ costs $0.99, with no in-app purchases.
Is Stream Studio NDI OBS Camera free?
Stream Studio NDI OBS Camera is free to download, with in-app purchases available.
Which has better reviews, BlendZ or Stream Studio NDI OBS Camera?
BlendZ is rated higher. BlendZ averages 3.7 out of 5 from 3 ratings, while Stream Studio NDI OBS Camera averages 3.0 from 4 ratings.
Do BlendZ or Stream Studio NDI OBS Camera have ads?
Neither BlendZ nor Stream Studio NDI OBS Camera shows ads.
Which is updated more often, BlendZ or Stream Studio NDI OBS Camera?
BlendZ ships an update every 4 months, and Stream Studio NDI OBS Camera weekly. Most recently, BlendZ was updated on October 10, 2026 and Stream Studio NDI OBS Camera on September 27, 2026.

Other comparisons