# ZETLIGHT SYSTEM vs HollyAudio

The clearest difference is rating: ZETLIGHT SYSTEM at 4.3 against HollyAudio's 2.3. ZETLIGHT SYSTEM also leads on review sentiment (29% vs 18%) and iOS requirement (9.0 vs 13.0). HollyAudio's advantage is ratings volume (111 vs 3) and update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model 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 2.3. That said, the two scores are not equally well evidenced: HollyAudio has 111 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 29% of ZETLIGHT SYSTEM's written reviews are positive against 18% of HollyAudio's.

ZETLIGHT SYSTEM ships an update every 2 months, HollyAudio every 3 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ZETLIGHT SYSTEM | HollyAudio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/zetlight-system/id1052640173/reviews)** | [2.3 (111 ratings)](https://appshunter.io/ios/app/hollyaudio/id6443487266/reviews) |
| Number of ratings | 3 | **111** |
| Positive reviews | **28.6% of reviews** | 18.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 22 MB | 168 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) | [深圳市昊一源科技有限公司](https://appshunter.io/developer/1460631424) |

## 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


### HollyAudio

[App page](https://appshunter.io/ios/app/hollyaudio/id6443487266)

This app enhances the functionality of Lark wireless microphones by enabling firmware upgrades and microphone parameter configuration. It aims to optimize the user experience for these specific devices.

**Highlights:** Firmware upgrades, Microphone parameter configuration, Optimized user experience, Device management

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

**In-app purchases:** none

**What reviewers like**

- ✅ Simple and intuitive interface design
- 🔧 Comprehensive control over microphone settings
- ⚡ Quick firmware updates when working
- 📱 Works reliably on some iPhone models
- 🎚️ Effective volume adjustment capabilities

**What reviewers complain about**

- 🐛 Persistent Bluetooth connectivity failures
- 🐛 App crashes when switching between applications
- 🐛 Device detection issues across multiple iPhone models
- 📵 USB-C connection not recognized on iPhone 15+
- 🔌 Requires constant app reopening to maintain connection

**Reported bugs**

- App does not detect receiver when plugged in via USB-C
- Bluetooth pairing fails repeatedly across devices
- App disconnects when user navigates to other applications
- Receiver not recognized on iPhone 15 and iPhone 16 models
- Firmware update loop causing app freeze

**Requested features**

- Volume slider instead of preset levels (high/medium/low)
- Individual volume control for each microphone
- Keep app running in background without disconnecting
- Auto mono/stereo switching based on microphone count
- Mac/desktop application support


## Frequently asked questions

### Is ZETLIGHT SYSTEM free?

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

### Is HollyAudio free?

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

### Which has better reviews, ZETLIGHT SYSTEM or HollyAudio?

ZETLIGHT SYSTEM is rated higher. ZETLIGHT SYSTEM averages 4.3 out of 5 from 3 ratings, while HollyAudio averages 2.3 from 111 ratings.

### Do ZETLIGHT SYSTEM or HollyAudio have ads?

Neither ZETLIGHT SYSTEM nor HollyAudio shows ads.

### Which is updated more often, ZETLIGHT SYSTEM or HollyAudio?

ZETLIGHT SYSTEM ships an update every 2 months, and HollyAudio every 3 weeks. Most recently, ZETLIGHT SYSTEM was updated on October 24, 2026 and HollyAudio on October 30, 2026.

---

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