# ST BLE Sensor vs SolarMark

The clearest difference is review sentiment: SolarMark at 100% against ST BLE Sensor's 0%. SolarMark also leads on rating (5.0 vs 2.0). ST BLE Sensor's advantage is ratings volume (10 vs 1). On price, update cadence, 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.

SolarMark holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: ST BLE Sensor has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of ST BLE Sensor's written reviews are positive against 100% of SolarMark's.

ST BLE Sensor ships an update every 2 months, SolarMark monthly. The most recent releases landed on June 19, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | ST BLE Sensor | SolarMark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (10 ratings)](https://appshunter.io/ios/app/st-ble-sensor/id993670214/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solarmark/id6776068343/reviews)** |
| Number of ratings | **10** | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 55 MB | 55 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STMicroelectronics International N.V.](https://appshunter.io/developer/1801774735) | [SolarMark Software LLC](https://appshunter.io/developer/6776062789) |

## What reviewers say

### ST BLE Sensor

[App page](https://appshunter.io/ios/app/st-ble-sensor/id993670214)

This app connects to ST development boards via Bluetooth Low Energy to access sensor data. You can log data to cloud providers, update board firmware, and explore various demo functionalities like environmental sensing and machine learning.

**Highlights:** Access sensor data, Log data to cloud, Update board firmware, Explore demo functionalities, Bluetooth Low Energy communication, Motion-sensor data fusion

**Features:** macOS Compatibility

**In-app purchases:** none


### SolarMark

[App page](https://appshunter.io/ios/app/solarmark/id6776068343)

Monitor your solar power generation and battery storage systems locally and privately. Visualize real-time energy flow, get intelligent predictions, and receive protection alerts without relying on cloud services.

**Highlights:** Direct Modbus TCP polling, Live power flow dashboard, Multi-device infrastructure management, Localized weather-based generation predictions, On-device analytics ledger, Open data export (CSV), Protection alerts (no-generation, performance, thermal)

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

**In-app purchases:** none


## Frequently asked questions

### Is ST BLE Sensor free?

ST BLE Sensor is free to download, with no in-app purchases.

### Is SolarMark free?

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

### Which has better reviews, ST BLE Sensor or SolarMark?

SolarMark is rated higher. ST BLE Sensor averages 2.0 out of 5 from 10 ratings, while SolarMark averages 5.0 from 1 ratings.

### Do ST BLE Sensor or SolarMark have ads?

Neither ST BLE Sensor nor SolarMark shows ads.

### Which is updated more often, ST BLE Sensor or SolarMark?

ST BLE Sensor ships an update every 2 months, and SolarMark monthly. Most recently, ST BLE Sensor was updated on June 19, 2026 and SolarMark on September 4, 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.*