# BatteryMonitorBL vs Solar Guardian

BatteryMonitorBL and Solar Guardian both sit at 2.3 stars, but that hides the real split: 50% of BatteryMonitorBL's written reviews are positive against 17% of Solar Guardian's. Solar Guardian's advantage is update cadence (every 2 months vs every 6 months) and ratings volume (17 vs 3). On price, rating, 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.

On the App Store both sit at effectively the same score — 2.3 for BatteryMonitorBL against 2.3 for Solar Guardian. That said, the two scores are not equally well evidenced: Solar Guardian has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 50% of BatteryMonitorBL's written reviews are positive against 17% of Solar Guardian's.

BatteryMonitorBL ships an update every 6 months, Solar Guardian every 2 months. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BatteryMonitorBL | Solar Guardian |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/batterymonitorbl/id1585654219/reviews)** | [2.3 (17 ratings)](https://appshunter.io/ios/app/solar-guardian/id6443552259/reviews) |
| Number of ratings | 3 | **17** |
| Positive reviews | **50.0% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 6 MB | 84 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen zetara power system Co.,LTD](https://appshunter.io/developer/1774419082) | [BEIJING EPSOLAR TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1330876646) |

## What reviewers say

### BatteryMonitorBL

[App page](https://appshunter.io/ios/app/batterymonitorbl/id1585654219)

Monitor your device's battery health in real-time. View crucial metrics such as current, temperature, and voltage. Connect via Bluetooth for seamless data acquisition.

**Highlights:** Real-time battery health monitoring, View current, temperature, and voltage, Bluetooth connectivity, Supports iPhone and iPad, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


### Solar Guardian

[App page](https://appshunter.io/ios/app/solar-guardian/id6443552259)

Monitor and control various solar energy systems, including inverters, chargers, and storage solutions. Adjust parameters and view data for optimal energy management.

**Highlights:** Data display for solar systems, Parameter setting for inverters, Supports grid-tie inverters, Hybrid inverter management, Energy storage system monitoring, Home and mobile energy storage control

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

**In-app purchases:** none


## Frequently asked questions

### Is BatteryMonitorBL free?

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

### Is Solar Guardian free?

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

### Which has better reviews, BatteryMonitorBL or Solar Guardian?

BatteryMonitorBL is rated higher. BatteryMonitorBL averages 2.3 out of 5 from 3 ratings, while Solar Guardian averages 2.3 from 17 ratings.

### Do BatteryMonitorBL or Solar Guardian have ads?

Neither BatteryMonitorBL nor Solar Guardian shows ads.

### Which is updated more often, BatteryMonitorBL or Solar Guardian?

BatteryMonitorBL ships an update every 6 months, and Solar Guardian every 2 months. Most recently, BatteryMonitorBL was updated on October 13, 2026 and Solar Guardian on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*