LightBlue®
Punch Through Utilities iPhoneiPadiPod touchMac
LightBlue® is a free Utilities app for iPhone and iPad by Punch Through. Rated 4.3/5 from 942 ratings. Requires iOS 16.4. Updated September 17, 2026.
- Rating
- 4.3
- 942 ratings
- Price
- Free
- on the App Store
- Size
- 22 MB
- Age 4+
- Updated
- Sep 17
- 2026 · v5.5.1
Screenshots
About LightBlue®
LightBlue® by Punch Through® Your ultimate BLE debugging and development toolkit. Trusted by BLE developers and engineers since 2012 to scan, inspect, and troubleshoot Bluetooth Low Energy devices with precision. Scan For Peripherals Discover, connect, and interact with nearby BLE devices. Quickly view advertising peripherals, sort by signal strength (RSSI), and connect with a single tap. Once connected, explore the device's advertisement data, services, and characteristics. Isolate SDK Issues Simplify debugging by pinpointing issues in your BLE SDKs. LightBlue lets you isolate your app's business logic and focus on core tasks like connecting, scanning, reading, writing, and receiving notifications, built on years of BLE development experience and platform best practices. Mimic Your Devices Prototype your application by creating virtual BLE peripherals. Build a profile from scratch or clone an advertising peripheral to mimic your product's functionality, even before your own firmware is ready. Key features: - Scan and discover BLE peripherals nearby - Browse services and characteristics in detail - Read, write, and subscribe to notifications and indications - Send data from notifications to AWS IoT or Adafruit IO via Cloud Connect - Write to characteristics in Hex, Octal, Binary, Decimal, or ASCII - Clone peripheral profiles or build your own from scratch - Advertise as a custom peripheral to simulate your device - Thoroughly log and share BLE events - Available on iPhone, iPad, Mac, and Android LightBlue started in 2012 as an internal tool. Punch Through built it to test and debug BLE devices while working on client projects. It worked well, so we shared it with the community. We've kept it free ever since. Today, LightBlue is used by solo developers and engineering teams alike, including inside some of the world's most respected tech and device companies.
Ratings & reviews
4.3
942 ratings
What’s new
Version 5.5.1 · Updated 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®!
App privacy
The developer, Punch Through, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Contact Info: Email Address
- Usage Data: Product Interaction
- Diagnostics: Crash Data
Used for: Developer’s Advertising or Marketing, Analytics, App Functionality
Alternatives to LightBlue®
Looking for apps like LightBlue®? Here are 6 similar apps on the App Store. The highest rated is Device Tracker (4.7/5), and all 6 are free to download.
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nRF Connect for Mobile
4.5
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Wunderfind: Find Lost Device
4.5
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Find my Bluetooth Device App
4.4
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Network Analyzer: WiFi Scan
4.6
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Bluetooth for Arduino
3.4
-
Device Tracker
4.7
| App | Rating | Price | Last updated |
|---|---|---|---|
| LightBlue® | 4.3 / 5 (942 ratings) | Free | September 17, 2026 |
| nRF Connect for Mobile | 4.5 / 5 (465) | Free | Jun 17, 2026 |
| Wunderfind: Find Lost Device | 4.5 / 5 (117,083) | Free | Mar 5, 2025 |
| Find my Bluetooth Device App | 4.4 / 5 (4,637) | Free | Sep 16, 2026 |
| Network Analyzer: WiFi Scan | 4.6 / 5 (6,821) | Free | Sep 13, 2026 |
| Bluetooth for Arduino | 3.4 / 5 (42) | Free | Aug 14, 2026 |
| Device Tracker | 4.7 / 5 (36,983) | Free | Aug 30, 2026 |