# M2 Calculator vs NDI HX Camera

The clearest difference is rating: M2 Calculator at 5.0 against NDI HX Camera's 4.4. M2 Calculator also leads on in-app purchases (none vs 4) and iOS requirement (9.0 vs 14.0). NDI HX Camera's advantage is ratings volume (530 vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. NDI HX Camera sells 4 in-app purchases, starting at $4.99 per month. M2 Calculator asks for nothing beyond the download.

M2 Calculator holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: NDI HX Camera has 530 ratings behind it against 4, so its average is the more settled of the two.

M2 Calculator ships an update every 7 months, NDI HX Camera every 5 months. The most recent releases landed on October 10, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | M2 Calculator | NDI HX Camera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/m2-calculator/id1035183544/reviews)** | [4.4 (530 ratings)](https://appshunter.io/ios/app/ndi-hx-camera-stream-capture/id6502563620/reviews) |
| Number of ratings | 4 | **530** |
| Positive reviews | — | 10.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 8 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Darren Alexander](https://appshunter.io/developer/946616105) | [新雨 李](https://appshunter.io/developer/1559932632) |

## What reviewers say

### M2 Calculator

[App page](https://appshunter.io/ios/app/m2-calculator/id1035183544)

Calculate the number of M2 Processors needed for LED video screens based on tile type, frame rate, and color depth. This tool helps determine the total tiles and ports required for a given setup, updated for the SX40 Processor.

**Highlights:** Calculate M2 Processor requirements, Select LED tile types, Set frame rate and color depth, Determine tiles per port, Calculate total tiles, Supports SX40 Processor

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### NDI HX Camera

[App page](https://appshunter.io/ios/app/ndi-hx-camera-stream-capture/id6502563620)

Transform your smartphone into an HD IP camera for professional video production. Stream high-quality video in real-time to OBS, NDI systems, and other compatible software. Ideal for content creators, journalists, and live event broadcasters seeking a portable and integrated solution.

**Highlights:** Real-time NDI streaming, HD IP camera functionality, OBS and NDI compatibility, High-definition video capture, User-friendly interface, Efficient local network use

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $4.99 | per month |
| Unlimited access | $9.99 | per 3 months |
| Unlimited access | $14.99 | per 6 months |
| Unlimited access | $19.99 | per year |

**What reviewers like**

- 👍 Clean and intuitive user interface
- ✅ Easy to use and straightforward
- 🎥 Works well when functioning properly
- 📱 Useful for remote camera capabilities

**What reviewers complain about**

- 💰 Aggressive paywall - most features locked behind subscription
- 🚫 App doesn't work or sends black screen/no video signal
- ⏱️ Frequent crashes and freezes after 5-20 minutes
- 🔧 Settings and configuration options inaccessible without payment
- ❌ Incompatible with NDI tools, OBS, vMix, and other standard software

**Reported bugs**

- App times out or freezes after 5-20 minutes of use
- Black screen or no video output despite connection
- Settings gear icon doesn't respond to taps
- App crashes and locks up device requiring restart
- Audio not working on iPhone 15 Pro

**Requested features**

- FPS and codec customization options
- Resolution and quality control settings
- Audio transmission support
- Remote zoom control via device remote
- Screen mirroring capability (not just camera)


## Frequently asked questions

### Is M2 Calculator free?

M2 Calculator is free to download, with no in-app purchases.

### Is NDI HX Camera free?

NDI HX Camera is free to download, with in-app purchases available.

### Which has better reviews, M2 Calculator or NDI HX Camera?

M2 Calculator is rated higher. M2 Calculator averages 5.0 out of 5 from 4 ratings, while NDI HX Camera averages 4.4 from 530 ratings.

### Do M2 Calculator or NDI HX Camera have ads?

Neither M2 Calculator nor NDI HX Camera shows ads.

### Which is updated more often, M2 Calculator or NDI HX Camera?

M2 Calculator ships an update every 7 months, and NDI HX Camera every 5 months. Most recently, M2 Calculator was updated on October 10, 2026 and NDI HX Camera on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*