# LYNK Pro vs SMART GC2

The clearest difference is update cadence: SMART GC2 at fortnightly against LYNK Pro's every 3 months. LYNK Pro's advantage is iOS requirement (12.0 vs 15.1). 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.

LYNK Pro ships an update every 3 months, SMART GC2 fortnightly. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | LYNK Pro | SMART GC2 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 84 MB | 448 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Giesemann Lichttechnik und Aquaristik GmbH](https://appshunter.io/developer/1062255163) | [Jason Busolt](https://appshunter.io/developer/1706830199) |

## What reviewers say

### LYNK Pro

[App page](https://appshunter.io/ios/app/lynk-pro/id6456609506)

Control smart aquarium lighting with preset programs and advanced features like sunrise/sunset and weather simulations. It's designed for specific Giesemann devices and will expand to support more smart aquarium products.

**Highlights:** User-friendly interface, Preset lighting programs, Sunrise/sunset simulation, Lunar cycle simulation, Weather simulation, Acclimation program (in preparation)

**Features:** macOS Compatibility

**In-app purchases:** none


### SMART GC2

[App page](https://appshunter.io/ios/app/smart-gc2/id6465992860)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is LYNK Pro free?

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

### Is SMART GC2 free?

SMART GC2 is free to download, with no in-app purchases.

### Do LYNK Pro or SMART GC2 have ads?

Neither LYNK Pro nor SMART GC2 shows ads.

### Which is updated more often, LYNK Pro or SMART GC2?

LYNK Pro ships an update every 3 months, and SMART GC2 fortnightly. Most recently, LYNK Pro was updated on October 10, 2026 and SMART GC2 on October 4, 2026.

---

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