# PVbutler vs ViewPower

The clearest difference is rating: PVbutler at 2.9 against ViewPower's 1.0. PVbutler also leads on update cadence (every 3 months vs every 11 months) and review sentiment (18% vs 0%). On price, ads, in-app purchases and monetization model there is nothing between them.

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

PVbutler holds the better App Store score, 2.9 against 1.0. That said, the two scores are not equally well evidenced: PVbutler has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 18% of PVbutler's written reviews are positive against 0% of ViewPower's.

PVbutler ships an update every 3 months, ViewPower every 11 months. The most recent releases landed on October 24, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | PVbutler | ViewPower |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (15 ratings)](https://appshunter.io/ios/app/pvbutler/id1418322399/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/viewpower/id1502213017/reviews) |
| Number of ratings | **15** | 1 |
| Positive reviews | **17.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 11 months |
| Monetization | Free | Free |
| Size | 214 MB | 19 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Growatt New Energy Technology Co.,Ltd](https://appshunter.io/developer/1135731820) | [祥梯 孟](https://appshunter.io/developer/1070155084) |

## What reviewers say

### PVbutler

[App page](https://appshunter.io/ios/app/pvbutler/id1418322399)

Monitor your photovoltaic plant's performance remotely. Access energy yield, income, and system status wirelessly. Requires registration with the Sacolar PV Data Center.

**Highlights:** Remote monitoring of photovoltaic plants, Access energy yield data, Track income generation, View system status, Wireless data access, Compatible with Sacolar PV Data Center

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

**In-app purchases:** none


### ViewPower

[App page](https://appshunter.io/ios/app/viewpower/id1502213017)

Monitor device status, configure settings, and receive important notifications. Record historical device data for review. This utility app helps manage device operations effectively.

**Highlights:** Display device status, Configure device settings, Receive warning/alarm notifications, Record device data history

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PVbutler free?

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

### Is ViewPower free?

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

### Which has better reviews, PVbutler or ViewPower?

PVbutler is rated higher. PVbutler averages 2.9 out of 5 from 15 ratings, while ViewPower averages 1.0 from 1 ratings.

### Do PVbutler or ViewPower have ads?

Neither PVbutler nor ViewPower shows ads.

### Which is updated more often, PVbutler or ViewPower?

PVbutler ships an update every 3 months, and ViewPower every 11 months. Most recently, PVbutler was updated on October 24, 2026 and ViewPower 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.*