# SolarAssistant vs BMS

The clearest difference is rating: BMS at 5.0 against SolarAssistant's 1.0. BMS also leads on review sentiment (20% vs 0%). SolarAssistant's advantage is update cadence (every 11 days vs every 2 months) and iOS requirement (9.0 vs 15.0). On price, ratings volume, ads and in-app purchases 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 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 0% of SolarAssistant's written reviews are positive against 20% of BMS's.

SolarAssistant ships an update every 11 days, BMS every 2 months. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | SolarAssistant | BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/solarassistant/id1123555800/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bms-tool/id6471949475/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | **20.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 months |
| Monetization | Free | Free |
| Size | 12 MB | 40 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [易事特集团股份有限公司](https://appshunter.io/developer/1036040326) | [秀丽 唐](https://appshunter.io/developer/1715570419) |

## What reviewers say

### SolarAssistant

[App page](https://appshunter.io/ios/app/solarassistant/id1123555800)

This app connects to solar inverters via Bluetooth or WiFi for maintenance. It allows real-time monitoring of alarms, configuration parameters, and device health history. Quickly locate faults and enhance operational efficiency.

**Highlights:** Bluetooth/WiFi inverter connection, Real-time alarm monitoring, Configuration parameter access, Log downloading, Fault location and management, Device health history query

**Features:** macOS Compatibility

**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 SolarAssistant free?

SolarAssistant 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, SolarAssistant or BMS?

BMS is rated higher. SolarAssistant averages 1.0 out of 5 from 2 ratings, while BMS averages 5.0 from 1 ratings.

### Do SolarAssistant or BMS have ads?

Neither SolarAssistant nor BMS shows ads.

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

SolarAssistant ships an update every 11 days, and BMS every 2 months. Most recently, SolarAssistant was updated on September 16, 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.*