Comparison

ST BLE Sensor vs Closer Security

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ST BLE Sensor

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
Read full description

The ST BLE Sensor application is used in conjunction with an ST development board and firmware compatible with the BlueST protocol to give you access to all the sensor data, which you can log to different cloud providers, and to update the board firmware directly from a mobile device via the Bluetooth® Low Energy protocol. After discovery ST development board, the app shows you a list of available demos and you can navigate through them to discover the functionalities of your board. Demos can be related about environmental, cloud, audio, board configuration, machine learning and and many other functionalities. The application is built on top of the BlueST SDK library implementing the BlueST protocol and helps you export the data easily via Bluetooth® Low Energy. The application also supports firmware library algorithms like motion-sensor data fusion, activity recognition and pedometer functionality. Both SDK and application source code are freely available at: https://github.com/STMicroelectronics

About

Closer Security

Features
Read full description

Protect Your Child with CLOSER SECURITY SOS Bracelet One-Touch SOS: When your child feels unsafe, one press of the bracelet sends their location straight to your phone. Quick, simple, effective. 10-Second Voice Message: Alongside the location, a 10-second voice recording is dispatched, giving you a clear idea of your child's situation. Hear their voice when it matters most! Easy to Use: No tech-savvy needed! Simple setup for both parents and kids. The bracelet is comfortable for all-day wear, and the app interface is intuitive. Secure Data: We prioritize your family's privacy with robust encryption. Only you are notified in emergencies, keeping personal details safe. Instant Alerts: Receive logs immediately upon an SOS activation. Never miss a crucial moment. Mute & Unmute Mode: To prevent accidental alerts, we've added a mute/unmute feature. Now, you can control when the bracelet can send an SOS, reducing false alarms caused by fidgeting kids

Screenshots

ST BLE Sensor4 screens
Closer Security4 screens

Verdict

The call

The clearest difference is update cadence: Closer Security at every 2 weeks against ST BLE Sensor's every 2 months. Closer Security also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ST BLE Sensor ships an update every 2 months, Closer Security every 2 weeks. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
ST BLE Sensor versus Closer Security: the parameters behind the verdict, then further details
ParameterST BLE SensorCloser Security
PriceFreeFree
Rating2.0 (10 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings10 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size55 MB50 MB
Age rating4+4+
DeveloperSTMicroelectronicsYou Steed

In-app purchases

None

ST BLE Sensor

No in-app purchases

None

Closer Security

No in-app purchases

Questions

Is ST BLE Sensor free?
ST BLE Sensor is free to download, with no in-app purchases.
Is Closer Security free?
Closer Security is free to download, with no in-app purchases.
Do ST BLE Sensor or Closer Security have ads?
Neither ST BLE Sensor nor Closer Security shows ads.
Which is updated more often, ST BLE Sensor or Closer Security?
ST BLE Sensor ships an update every 2 months, and Closer Security every 2 weeks. Most recently, ST BLE Sensor was updated on October 1, 2026 and Closer Security on October 10, 2026.

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