Bluetooth LE Connector 3.5.137.0

Efimov S.V. ❘ Freeware ❘
Windows

Latest Version
3.5.137.0

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Simple, developer-focused tool for connecting to Bluetooth Low Energy devices

Human-built. AI-enhanced.

Elena Angelini

10/15/2026

Bluetooth LE Connector by Efimov S.V. is a lightweight Windows app that scans for and connects to BLE devices, exposes services and characteristics for read/write/subscribe operations, and is suited to developers or power users who need a straightforward BLE inspection and interaction utility; it’s functional but minimal, with limited polish and documentation and occasional compatibility quirks across adapters and Windows versions.

The app connects phones or PCs to nearby accessories using Bluetooth LE, providing device-to-phone and phone-to-device alerts, basic device management, and integration with select wearable models. It targets systems that can detect Bluetooth Low Energy peripherals and surfaces status, synchronization, and control functions from a single interface.

Compatibility
- Requires devices with Bluetooth 4.0 (Smart Bluetooth).
- Tested with CASIO G-Shock models GB-X6900B and STB-1000.
- Tested with BQ-mobile (BQ-W008).
- Works with devices that implement a signal-loss warning service.

Configuration is straightforward when the host device discovers the peripheral over Bluetooth LE. The interface groups connectivity and device-specific controls, though feature availability depends on the accessory’s exposed services. Windows 10 users can receive application notifications from the connected device.

Alerts and location
- Notifies the accessory when the phone or PC goes out of range.
- Notifies the phone or PC when the accessory is lost and records the last synchronized location on a map.
Wearable integrations (CASIO G-Shock)
- Synchronize watch time with the phone.
- Configure alarm, timer, and basic watch settings from the host device.
- Trigger a phone/PC finder notification from the watch.
Diagnostics and services
- Displays device information and a list of supported services with descriptions for known profiles.
- Exposes available controls and status indicators according to the accessory’s implemented services.

Overview

Bluetooth LE Connector is a Freeware software in the category System Utilities developed by Efimov S.V..

The users of our client application UpdateStar have checked Bluetooth LE Connector for updates 31 times during the last month.

The latest version of Bluetooth LE Connector is 3.5.137.0, released on 10/14/2026. It was initially added to our database on 10/01/2026. The most prevalent version is 3.5.137.0, which is used by 100% of all installations.

Bluetooth LE Connector runs on the following operating systems: Windows.

Bluetooth LE Connector has not been rated by our users yet.

Pros

Simple, focused purpose: provides a straightforward way to discover and connect to Bluetooth Low Energy (BLE) devices on Windows.
GATT explorer functionality: can browse services, characteristics and descriptors which is useful for testing and debugging BLE peripherals.
Read/write/notify support: allows reading and writing characteristic values and subscribing to notifications/indications for live data monitoring.
Lightweight and easy to install: small UWP/Windows Store app with minimal dependencies.
Good for developers and hobbyists: practical tool for rapid manual testing of BLE devices without writing custom code.
Basic pairing and connection management: handles connecting and disconnecting devices and shows device information.
Accessible UI for quick tasks: simple interface aimed at getting to GATT data quickly rather than deep configuration.
Useful for troubleshooting: can help verify BLE peripheral behavior, characteristic UUIDs, and raw payloads.

Cons

Limited advanced features: lacks many developer-oriented conveniences found in dedicated BLE tools (e.g., scripting, complex data parsing, automated test sequences).
UWP/Windows-only: no cross-platform versions (no native macOS/Linux or mobile equivalents), restricting use to Windows systems.
Potentially outdated/rare updates: depending on the author’s update cadence the app may not receive frequent improvements or new BLE platform features.
Sparse documentation and support: minimal built-in help or official documentation, and limited/no formal support channel if issues arise.
Basic UI and UX: functional but not feature-rich or polished compared to commercial BLE inspection tools.
Restricted to Windows Bluetooth stack limitations: any underlying Windows Bluetooth driver/stack bugs will affect the app’s reliability (e.g., connection drops or discovery issues).
No advanced logging/export: limited ability to export session logs or raw captures for deeper offline analysis in other tools.
May require appropriate Windows version and permissions: UWP store apps can be limited by OS version (Windows 10+) and Bluetooth adapter/driver compatibility, which can prevent use on older or locked-down systems.

FAQ

What is Bluetooth LE Connector by Efimov S.V.?

Bluetooth LE Connector is a utility app for discovering, connecting to, and interacting with Bluetooth Low Energy (BLE) devices from a Windows device. It lets you scan for nearby BLE peripherals, view their services and characteristics, and perform read/write/notify operations.

Which platforms and versions of Windows does the app support?

The app is available from the Microsoft Store for Windows devices that support the Universal Windows Platform (UWP). It requires a Windows build with Bluetooth LE support (typically Windows 10 or later) and a Bluetooth 4.0+ adapter with LE capabilities.

What BLE features does the app provide?

Features typically include scanning for BLE devices, connecting/disconnecting, browsing GATT services and characteristics, reading and writing characteristic values, enabling notifications/indications, and viewing device metadata such as RSSI and device address.

Which BLE devices are compatible?

Any BLE-compliant peripheral that implements standard GATT services and characteristics should be compatible (examples: fitness trackers, heart rate monitors, BLE sensors, custom IoT peripherals). Classic Bluetooth (BTBR/BR) devices are not supported.

Does the app require any special permissions?

Yes. The app requires access to the device's Bluetooth radio and location services (location permission may be requested because BLE scanning can be used to infer location). It may also request access to run in the background if notifications from devices are needed.

How do I connect to a device and view its services?

Open the app and start a scan. Tap the device name from the discovered list to connect. After connection, the app will display available GATT services and characteristics which you can expand to read values, toggle notifications, or write data where supported.

I can’t find my device in the scan results — what should I check?

Ensure the peripheral is powered on, advertising, and within range. Verify the PC’s Bluetooth is enabled and that Bluetooth drivers are up to date. Some devices require they be put into pairing or advertising mode. Restarting Bluetooth or the device can help.

Can I use the app to pair and bond with devices that require pairing?

The app can initiate connections to BLE devices. Pairing/bonding behavior depends on the device and Windows Bluetooth stack; if a device requires pairing, Windows will prompt you to complete the pairing process using the system dialog.

How secure is communication through the app and what about privacy?

Security depends on the BLE device and the Bluetooth LE security modes it supports (unencrypted, encrypted with passkey, or bonded). The app itself uses the Windows Bluetooth APIs and follows system security rules. As with any BLE tool, be cautious when connecting to unknown devices and review any app privacy information in the Microsoft Store listing.

Where can I get support or report bugs for Bluetooth LE Connector?

Check the app’s page on the Microsoft Store for developer contact details or support links. You can also use the Store’s feedback mechanism to report issues; include details such as Windows build, Bluetooth adapter model, and steps to reproduce the problem.

Elena Angelini

I'm Elena, your go-to software reviewer at UpdateStar and tech enthusiast. Whether you're a user seeking the latest software titles or software news I've got you covered. When I'm not diving into the latest software, you can find me exploring nature trails, camping under the stars, or competing in online multiplayer games. My reviews are designed to be fun, engaging, and packed with all the details you need to make informed decisions.

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31 users of UpdateStar had Bluetooth LE Connector installed last month.

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