# PVbutler vs Smart

The clearest difference is rating: PVbutler at 2.9 against Smart's 1.5. PVbutler also leads on review sentiment (18% vs 0%). Smart's advantage is iOS requirement (9.0 vs 12.0). On price, ratings volume, 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.

PVbutler holds the better App Store score, 2.9 against 1.5. Both are backed by a comparable volume of ratings — 15 and 6 respectively. Written reviews point the same way: 18% of PVbutler's written reviews are positive against 0% of Smart's.

PVbutler ships an update every 3 months, Smart every 2 months. Both last shipped on October 10, 2026.

## The numbers

| Metric | PVbutler | Smart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (15 ratings)](https://appshunter.io/ios/app/pvbutler/id1418322399/reviews)** | [1.5 (6 ratings)](https://appshunter.io/ios/app/smart-meter/id1452974752/reviews) |
| Number of ratings | **15** | 6 |
| Positive reviews | **17.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 214 MB | 23 MB |
| Requires iOS | 12.0 | **9.0** |
| 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


### Smart

[App page](https://appshunter.io/ios/app/smart-meter/id1452974752)

Monitor your smart meter devices in real time with this mobile terminal application. It provides easy-to-understand data visualization for both current and historical information, accessible from anywhere. The app is designed to be efficient, using minimal internet traffic.

**Highlights:** Real-time smart meter status monitoring, Easy-to-understand data visualization charts, Access historical data anytime, anywhere, Display data in multiple dimensions, Low internet traffic consumption

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PVbutler free?

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

### Is Smart free?

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

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

PVbutler is rated higher. PVbutler averages 2.9 out of 5 from 15 ratings, while Smart averages 1.5 from 6 ratings.

### Do PVbutler or Smart have ads?

Neither PVbutler nor Smart shows ads.

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

PVbutler ships an update every 3 months, and Smart every 2 months. Most recently, PVbutler was updated on October 10, 2026 and Smart on October 10, 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.*