LightBlue® vs ETRNL Programmer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
ETRNL Programmer
This application allows users to program NTAG424 DNA NFC chips. It connects with the ETRNL platform to facilitate chip configuration.
- Program NTAG424 DNA NFC chips
- Connects with ETRNL platform
- Facilitates chip configuration
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The ETRNL Programmer app enables users of the ETRNL platform to program their NTAG424 DNA NFC chips.
Screenshots
Verdict
The clearest difference is rating: ETRNL Programmer at 5.0 against LightBlue®'s 4.3. ETRNL Programmer also leads on review sentiment (100% vs 66%) and monetization model (free vs ad-supported). LightBlue®'s advantage is ratings volume (942 vs 2). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ETRNL Programmer holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: LightBlue® has 942 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 66% of LightBlue®'s written reviews are positive against 100% of ETRNL Programmer's.
LightBlue® ships an update every 3 weeks, ETRNL Programmer every 4 weeks. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.
| Parameter | LightBlue® | ETRNL Programmer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (942 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 66.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 942 — better | 2 |
| Update frequency | Every 3 weeks — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 16.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 61 MB |
| Age rating | 4+ | 17+ |
| Developer | Punch Through | Invisible Art, LLC |
Customer experience
LightBlue®
ETRNL Programmer
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
ETRNL Programmer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
LightBlue®
No in-app purchases
ETRNL Programmer
No in-app purchases
Questions
Is LightBlue® free?
Is ETRNL Programmer free?
Which has better reviews, LightBlue® or ETRNL Programmer?
Do LightBlue® or ETRNL Programmer have ads?
Which is updated more often, LightBlue® or ETRNL Programmer?
Other comparisons
