Comparison

LightBlue® vs UDP Sender

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

Head to head
About

LightBlue®

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.

Highlights
  • 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
Features
Read full description

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.

About

UDP Sender

Features
Read full description

UDP is a simple application whose purpose is to send UDP packets using UDP (User Datagram Protocol), a fast and low latency sending protocol. You can send these packets through the WiFi network, defining an IP address, a port and an interface that allows you to configure the packets to be sent. You can use this app to send simple and fast commands to other connected devices on your network. You can control things like: - Simple robots based on Arduino - Desktop/mobile applications that listen for commands with the UDP protocol - Any DIY ideas you can think of This application is free and does not display any type of advertising.

Screenshots

LightBlue®4 screens
UDP Sender4 screens

Verdict

The call

LightBlue® and UDP Sender are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

LightBlue® ships an update every 3 weeks, UDP Sender fortnightly. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

ScorecardNo meaningful differences
LightBlue® versus UDP Sender: the parameters behind the verdict, then further details
ParameterLightBlue®UDP Sender
PriceFreeFree
Rating4.3 (942 ratings) — better—
Positive reviews66.1% of reviews—
Number of ratings942 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.4 — better17.6
Further details — not scored
Size22 MB4 MB
Age rating4+4+
DeveloperPunch ThroughJhonyfer Angarita

Bugs and requests

LightBlue®

Reported bugs

3 issues
  • Crashes after updates
  • Fails to connect Apple Pencil
  • Doesn't detect all nearby devices

Requested features

3 requests
  • Ability to manually name devices
  • More precise location tracking
  • Integration with Siri/Shortcuts

UDP Sender

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

LightBlue®

No in-app purchases

None

UDP Sender

No in-app purchases

Questions

Is LightBlue® free?
LightBlue® is free to download, with no in-app purchases.
Is UDP Sender free?
UDP Sender is free to download, with no in-app purchases.
Do LightBlue® or UDP Sender have ads?
Neither LightBlue® nor UDP Sender shows ads.
Which is updated more often, LightBlue® or UDP Sender?
LightBlue® ships an update every 3 weeks, and UDP Sender fortnightly. Most recently, LightBlue® was updated on October 14, 2026 and UDP Sender on October 5, 2026.

Other comparisons