# GSL Smart ESS vs GFG GridGuru

The clearest difference is iOS requirement: GFG GridGuru at 12.0 against GSL Smart ESS's 15.6. 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.

GSL Smart ESS ships an update every 9 months, GFG GridGuru every 7 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | GSL Smart ESS | GFG GridGuru |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 7 months** |
| Size | 37 MB | 60 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHENZHEN GSL ENERGY CO LTD](https://appshunter.io/developer/1873857076) | [GFG Power](https://appshunter.io/developer/1806093315) |

## 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


### GFG GridGuru

[App page](https://appshunter.io/ios/app/gfg-gridguru/id6744109040)

**Features:** macOS Compatibility

**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 GFG GridGuru free?

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

### Do GSL Smart ESS or GFG GridGuru have ads?

Neither GSL Smart ESS nor GFG GridGuru shows ads.

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

GSL Smart ESS ships an update every 9 months, and GFG GridGuru every 7 months. Most recently, GSL Smart ESS was updated on October 25, 2026 and GFG GridGuru on October 25, 2026.

---

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