# ESS LINK vs GSL Smart ESS

The clearest difference is update cadence: ESS LINK at every 5 weeks against GSL Smart ESS's every 9 months. ESS LINK also leads on iOS requirement (13.0 vs 15.6). 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.

ESS LINK ships an update every 5 weeks, GSL Smart ESS every 9 months. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | ESS LINK | GSL Smart ESS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (6 ratings)](https://appshunter.io/ios/app/ess-link/id6449733401/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 75 MB | 37 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Sinexcel Electric Co,.Ltd.](https://appshunter.io/developer/1638251236) | [SHENZHEN GSL ENERGY CO LTD](https://appshunter.io/developer/1873857076) |

## What reviewers say

### ESS LINK

[App page](https://appshunter.io/ios/app/ess-link/id6449733401)

Monitor and control photovoltaic equipment remotely. View real-time operational data, historical performance, and fault logs. Adjust equipment settings like switches and working modes for efficient energy management.

**Highlights:** Remote data monitoring, Control photovoltaic equipment, View operational data, Access historical data, Manage equipment settings, QR code device entry

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

**In-app purchases:** none


### GSL Smart ESS

[App page](https://appshunter.io/ios/app/gsl-smart-ess/id6504597237)

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

**In-app purchases:** none


## Frequently asked questions

### Is ESS LINK free?

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

### Is GSL Smart ESS free?

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

### Do ESS LINK or GSL Smart ESS have ads?

Neither ESS LINK nor GSL Smart ESS shows ads.

### Which is updated more often, ESS LINK or GSL Smart ESS?

ESS LINK ships an update every 5 weeks, and GSL Smart ESS every 9 months. Most recently, ESS LINK was updated on October 8, 2026 and GSL Smart ESS on October 2, 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.*