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LightBlue®

LightBlue®

The go-to BLE development tool

942 ratings
293 reviews
🔧 Utilities
Free

Details

Released
September 8, 2012
Updated
September 17, 2026

Features

Developer

Punch Through
✨Promote your app ✨
LightBlue® screenshot #1 for iPhone
LightBlue® screenshot #2 for iPhone
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LightBlue® screenshot #6 for iPhone
iphone
ipad
📌Ready
Reviews summary↘︎
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🔄6+ apps
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❓5 answered
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📦~ in 2 weeks
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About

This app allows users to interact with Bluetooth Low Energy devices. It supports scanning for, connecting to, and analyzing BLE peripherals, as well as simulating your own BLE devices. It's a comprehensive tool for developers and enthusiasts working with BLE technology.

✓Scan and discover BLE peripherals
✓Connect and view device profiles
✓Read and write characteristics
✓Subscribe to notifications
✓Create and advertise virtual BLE devices
✓Clone peripheral profiles
✓Log and share BLE events
Show original description

What users say about LightBlue®

Reviews of LightBlue® are mostly positive: the Utilities app is rated 4.4/5 from 942 App Store ratings. What users like most: found lost devices, helpful for locating Bluetooth devices. Top complaints: doesn't work with dead devices, unreliable connection. Summarized from real user reviews.

Positive things

  • 🚀Found lost devices
  • 🔍Helpful for locating Bluetooth devices
  • 👍Works great
  • 👍Lifesaver
  • 👍Fantastic app

Negative things

  • 🐛Doesn't work with dead devices
  • 🐛Unreliable connection
  • 🐛Confusing to use
  • 🐛Doesn't work with all devices
See all reviews

What's New in LightBlue®

5.5.1

September 17, 2026

The app is now fully compatible with iOS 27. Other changes from 5.5.0: - Dark mode support is here! - The app UI now fully embraces Liquid Glass. - You can now mark a peripheral as a favorite and filter on it while scanning! - Added an option in the overflow menu to reconnect from the main peripheral screen when the peripheral becomes disconnected. Thank you for using LightBlue®!

More

User reviews

Most RecentHighest RatedLowest Rated

非常好软件

听说可破解Apple Pencil限制
Nn11nzs

Kinda works

I can connect to my BLE IoT device, I can’t write UTF-8 Text because the popup thing has no “Ok” button when I try changing from Hex to a different format… it doesn’t make sense
GGdjxjxjdnsjkjxs

Found My Fitbit

I Tried around 3 apps and couldn’t find it, on this app, the lower the signal of the number became, I knew I was closer, and eventually found it.
HHhshsbsbzhxd

pencil

it connected my pencil to my iPad just fine! the password is 1234 for the Apple Pencil 1st gen
Hhahahaksidix

Inaccurate

Found my thing but bc it was my memory. 98 when I was in the same room with it.
MMikayal4
See 288 more reviews

Developer apps

Bean Loader - LightBlue Bean
Bean Loader - LightBlue Bean

by Punch Through Design LLC

🔧 Utilities

(2)

Free
See developer apps

User experience

🐞

Reported Bugs

3 issues

Crashes after updates

Bug

Fails to connect Apple Pencil

Bug

Doesn't detect all nearby devices

Bug
✨

Requested Features

3 requests

Ability to manually name devices

Feature

More precise location tracking

Feature

Integration with Siri/Shortcuts

Feature

FAQ

What does the LightBlue app do?

LightBlue is a tool designed for interacting with Bluetooth Low Energy (BLE) devices. It allows you to scan for and connect to BLE peripherals, inspect their services and characteristics, read and write data, and subscribe to notifications. It also enables you to simulate your own BLE peripheral devices.

What are the key features of LightBlue?

Key features include scanning for BLE devices, viewing device information like UUID and RSSI, browsing services and characteristics, registering for notifications, reading and writing characteristic values in various formats, cloning peripheral profiles, creating custom virtual peripherals, and logging BLE events.

Is LightBlue free to use?

Yes, the app is free to download and use. It is supported by advertisements, which are displayed within the application.

What kind of devices can I test with LightBlue?

You can use LightBlue to test a wide range of BLE devices, including heart rate monitors, temperature sensors, development boards from manufacturers like Microchip and Nordic, and custom BLE peripherals you are developing.

How can I use LightBlue to test my own BLE firmware?

LightBlue is ideal for testing your own BLE peripherals. You can advertise your iOS device as a custom BLE peripheral, define its services and characteristics, and then use the central mode to connect to and test its functionality, ensuring your firmware behaves as expected.