# GSL Smart ESS vs SolarVOLT

The clearest difference is update cadence: SolarVOLT at monthly against GSL Smart ESS's every 9 months. SolarVOLT also leads on iOS requirement (13.4 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.

GSL Smart ESS ships an update every 9 months, SolarVOLT monthly. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | GSL Smart ESS | SolarVOLT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (30 ratings)](https://appshunter.io/ios/app/solarvolt/id6747215783/reviews)** |
| Number of ratings | — | **30** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | — | Free |
| Size | 37 MB | 42 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [SHENZHEN GSL ENERGY CO LTD](https://appshunter.io/developer/1873857076) | [AsianPowerDevicesInc](https://appshunter.io/developer/1214788661) |

## What reviewers say

### GSL Smart ESS

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

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

**In-app purchases:** none


### SolarVOLT

[App page](https://appshunter.io/ios/app/solarvolt/id6747215783)

Monitor your inverter's performance and log its data. This application also allows for inverter configuration, providing a comprehensive tool for managing your solar power system.

**Highlights:** Monitor inverter data, Log inverter data, Inverter configuration, Solar power system management

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

**In-app purchases:** none


## Frequently asked questions

### Is GSL Smart ESS free?

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

### Is SolarVOLT free?

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

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

Neither GSL Smart ESS nor SolarVOLT shows ads.

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

GSL Smart ESS ships an update every 9 months, and SolarVOLT monthly. Most recently, GSL Smart ESS was updated on October 2, 2026 and SolarVOLT on October 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.*