# Spiral Engineering vs SunSmart NLC

The clearest difference is ratings volume: Spiral Engineering at 4 against SunSmart NLC's 1. Spiral Engineering also leads on iOS requirement (12.0 vs 15.0). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Spiral Engineering against 5.0 for SunSmart NLC. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Spiral Engineering ships an update every 5 weeks, SunSmart NLC monthly. The most recent releases landed on July 7, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Spiral Engineering | SunSmart NLC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/spiral-engineering/id1576156198/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sunsmart-nlc/id6737145902/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 32 MB | 34 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Litetrace Inc](https://appshunter.io/developer/1685148777) | [文 徐](https://appshunter.io/developer/1636588866) |

## What reviewers say

### Spiral Engineering

[App page](https://appshunter.io/ios/app/spiral-engineering/id1576156198)

This utility app allows for firmware over-the-air updates and professional parameter adjustments for connected devices. Users can fine-tune settings such as PWM, high and low trim, fading time, and auto brightness levels.

**Highlights:** Firmware OTA updates, Professional parameter setting, PWM adjustment, High and low trim control, Fading time configuration, Auto brightness level setting

**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 Spiral Engineering free?

Spiral Engineering is free to download, with no in-app purchases.

### Is SunSmart NLC free?

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

### Which has better reviews, Spiral Engineering or SunSmart NLC?

Spiral Engineering and SunSmart NLC are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do Spiral Engineering or SunSmart NLC have ads?

Neither Spiral Engineering nor SunSmart NLC shows ads.

### Which is updated more often, Spiral Engineering or SunSmart NLC?

Spiral Engineering ships an update every 5 weeks, and SunSmart NLC monthly. Most recently, Spiral Engineering was updated on July 7, 2026 and SunSmart NLC on September 11, 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.*