# ZETLIGHT SYSTEM vs Smart Aqua

The clearest difference is rating: ZETLIGHT SYSTEM at 4.3 against Smart Aqua's 1.0. ZETLIGHT SYSTEM also leads on review sentiment (29% vs 0%) and ratings volume (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

ZETLIGHT SYSTEM holds the better App Store score, 4.3 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 29% of ZETLIGHT SYSTEM's written reviews are positive against 0% of Smart Aqua's.

ZETLIGHT SYSTEM ships an update every 2 months, Smart Aqua monthly. The most recent releases landed on September 10, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | ZETLIGHT SYSTEM | Smart Aqua |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/zetlight-system/id1052640173/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/smart-aqua/id6449386967/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **28.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 22 MB | 34 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zetlight Group](https://appshunter.io/developer/1156386420) | [Shenzhen Kinwayn Tech Co., Ltd.](https://appshunter.io/developer/1688849456) |

## What reviewers say

### ZETLIGHT SYSTEM

[App page](https://appshunter.io/ios/app/zetlight-system/id1052640173)

Control Zetlight LED aquarium lighting devices remotely. Manage multiple lights, adjust effects like dawn and lunar phases, and simulate weather patterns. Offers basic and expert control platforms for aquarium hobbyists.

**Highlights:** Control Zetlight LED lighting devices, Wireless network control, Manage multiple lightings, Basic and Expert control platforms, Adjust light effects (dawn, sunrise, daytime, sunset, nighttime), Simulate weather and lunar phases, Acclimation mode for new tank inhabitants

**In-app purchases:** none


### Smart Aqua

[App page](https://appshunter.io/ios/app/smart-aqua/id6449386967)

Control your aquarium products with this app. Features include product connectivity, customizable sunrise and sunset lighting, and personalized lighting programs to enhance your aquatic environment.

**Highlights:** Product connectivity, Sunrise and sunset control, Customized lighting programs, Aquarium product management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZETLIGHT SYSTEM free?

ZETLIGHT SYSTEM is free to download, with no in-app purchases.

### Is Smart Aqua free?

Smart Aqua is free to download, with no in-app purchases.

### Which has better reviews, ZETLIGHT SYSTEM or Smart Aqua?

ZETLIGHT SYSTEM is rated higher. ZETLIGHT SYSTEM averages 4.3 out of 5 from 3 ratings, while Smart Aqua averages 1.0 from 1 ratings.

### Do ZETLIGHT SYSTEM or Smart Aqua have ads?

Neither ZETLIGHT SYSTEM nor Smart Aqua shows ads.

### Which is updated more often, ZETLIGHT SYSTEM or Smart Aqua?

ZETLIGHT SYSTEM ships an update every 2 months, and Smart Aqua monthly. Most recently, ZETLIGHT SYSTEM was updated on September 10, 2026 and Smart Aqua on June 1, 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.*