# PVbutler vs BMS

The clearest difference is rating: BMS at 5.0 against PVbutler's 2.9. PVbutler's advantage is ratings volume (15 vs 1) and iOS requirement (12.0 vs 15.0). On price, review sentiment, 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.

BMS holds the better App Store score, 5.0 against 2.9. 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 20% of BMS's.

PVbutler ships an update every 3 months, BMS every 2 months. The most recent releases landed on August 15, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | PVbutler | BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (15 ratings)](https://appshunter.io/ios/app/pvbutler/id1418322399/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bms-tool/id6471949475/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 17.6% of reviews | **20.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 214 MB | 40 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Growatt New Energy Technology Co.,Ltd](https://appshunter.io/developer/1135731820) | [秀丽 唐](https://appshunter.io/developer/1715570419) |

## 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


### BMS

[App page](https://appshunter.io/ios/app/bms-tool/id6471949475)

Monitor and manage your device's battery health with real-time data, historical records, and customizable alerts for over-charge, over-discharge, and temperature. Connect locally via Bluetooth or remotely via Wi-Fi to track battery status, cell performance, and potential issues.

**Highlights:** Real-time battery data (current, voltage, SOC, SOH), Cell-level monitoring, Historical alarm and protection records, Customizable warning values, Bluetooth and Wi-Fi connectivity, Device sharing and management

**In-app purchases:** none


## Frequently asked questions

### Is PVbutler free?

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

### Is BMS free?

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

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

BMS is rated higher. PVbutler averages 2.9 out of 5 from 15 ratings, while BMS averages 5.0 from 1 ratings.

### Do PVbutler or BMS have ads?

Neither PVbutler nor BMS shows ads.

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

PVbutler ships an update every 3 months, and BMS every 2 months. Most recently, PVbutler was updated on August 15, 2026 and BMS on September 23, 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.*