# PV Pro vs GSL ESS

The clearest difference is update cadence: PV Pro at fortnightly against GSL ESS's every 3 months. 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.

PV Pro ships an update fortnightly, GSL ESS every 3 months. The most recent releases landed on September 14, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | PV Pro | GSL ESS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (129 ratings)](https://appshunter.io/ios/app/pv-pro/id1247121391/reviews)** | — |
| Number of ratings | **129** | — |
| Positive reviews | 16.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free | — |
| Size | 180 MB | 6 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu E-Linter Information Technology Co., Ltd.](https://appshunter.io/developer/1149235329) | [永敬 邓](https://appshunter.io/developer/1542289672) |

## What reviewers say

### PV Pro

[App page](https://appshunter.io/ios/app/pv-pro/id1247121391)

Monitor and manage your photovoltaic power plants with real-time status updates. Easily track daily, monthly, and yearly power generation to stay informed about your plant's performance.

**Highlights:** Real-time power plant status, Daily power generation tracking, Monthly power generation tracking, Yearly power generation tracking, Convenient power plant overview

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

**In-app purchases:** none


### GSL ESS

[App page](https://appshunter.io/ios/app/gsl-ess/id6443837694)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PV Pro free?

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

### Is GSL ESS free?

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

### Do PV Pro or GSL ESS have ads?

Neither PV Pro nor GSL ESS shows ads.

### Which is updated more often, PV Pro or GSL ESS?

PV Pro ships an update fortnightly, and GSL ESS every 3 months. Most recently, PV Pro was updated on September 14, 2026 and GSL ESS on September 27, 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.*