# PV Pro vs EG4

The clearest difference is ratings volume: PV Pro at 129 against EG4's 12. EG4's advantage is review sentiment (25% vs 16%). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 2.4 for PV Pro against 2.3 for EG4. That said, the two scores are not equally well evidenced: PV Pro has 129 ratings behind it against 12, so its average is the more settled of the two. Written reviews are what separate them: 16% of PV Pro's written reviews are positive against 25% of EG4's.

PV Pro ships an update fortnightly, EG4 every 3 weeks. The most recent releases landed on October 14, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | PV Pro | EG4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (129 ratings)](https://appshunter.io/ios/app/pv-pro/id1247121391/reviews)** | [2.3 (12 ratings)](https://appshunter.io/ios/app/eg4/id1571511617/reviews) |
| Number of ratings | **129** | 12 |
| Positive reviews | 16.2% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 180 MB | 10 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu E-Linter Information Technology Co., Ltd.](https://appshunter.io/developer/1149235329) | [琼莉 吴](https://appshunter.io/developer/1741032172) |

## 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


### EG4

[App page](https://appshunter.io/ios/app/eg4/id1571511617)

This utility app monitors your device's battery health in real-time. It displays key metrics such as current, temperature, and voltage via Bluetooth connection. Keep track of your battery's vital signs to ensure optimal performance.

**Highlights:** Monitor battery health, Display current, temperature, voltage, Bluetooth connectivity, Real-time status updates, Device compatibility for iPhone/iPad

**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 EG4 free?

EG4 is free to download, with no in-app purchases.

### Which has better reviews, PV Pro or EG4?

PV Pro is rated higher. PV Pro averages 2.4 out of 5 from 129 ratings, while EG4 averages 2.3 from 12 ratings.

### Do PV Pro or EG4 have ads?

Neither PV Pro nor EG4 shows ads.

### Which is updated more often, PV Pro or EG4?

PV Pro ships an update fortnightly, and EG4 every 3 weeks. Most recently, PV Pro was updated on October 14, 2026 and EG4 on September 16, 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.*