# System 911 vs SunSmart NLC

The clearest difference is update cadence: SunSmart NLC at every 3 weeks against System 911's every 6 weeks. System 911's advantage is iOS requirement (9 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

System 911 ships an update every 6 weeks, SunSmart NLC every 3 weeks. The most recent releases landed on October 10, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | System 911 | SunSmart NLC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sunsmart-nlc/id6737145902/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 29 MB | 36 MB |
| Requires iOS | **9** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [学新 黄](https://appshunter.io/developer/1450715299) | [文 徐](https://appshunter.io/developer/1636588866) |

## What reviewers say

### System 911

[App page](https://appshunter.io/ios/app/system-911/id1497419202)

**Features:** macOS Compatibility

**In-app purchases:** none


### SunSmart NLC

[App page](https://appshunter.io/ios/app/sunsmart-nlc/id6737145902)

Control your smart lighting system with this app. It offers a simple and fast way to manage lighting for small to medium buildings, enhancing energy efficiency and user comfort.

**Highlights:** Smart lighting control, Energy efficiency improvement, Simplified commissioning, Increased user comfort, Fast and simple operation

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

**In-app purchases:** none


## Frequently asked questions

### Is System 911 free?

System 911 is free to download, with no in-app purchases.

### Is SunSmart NLC free?

SunSmart NLC is free to download, with no in-app purchases.

### Do System 911 or SunSmart NLC have ads?

Neither System 911 nor SunSmart NLC shows ads.

### Which is updated more often, System 911 or SunSmart NLC?

System 911 ships an update every 6 weeks, and SunSmart NLC every 3 weeks. Most recently, System 911 was updated on October 10, 2026 and SunSmart NLC on October 16, 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.*