BlueLinker vs JSON Formatter Viewer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
BlueLinker
This tool facilitates serial communication with Bluetooth-enabled microcontrollers like Arduino and Raspberry Pi. It offers automatic device scanning, real-time data transfer, and includes example code for LED control. Compatible with various popular development boards and BLE modules.
- Automatic BLE device scanning
- Real-time serial communication (UART)
- LED control example code
- Support for HM-10, ESP32, STM32
- Connects to Arduino and Raspberry Pi
Read full descriptionHide full description
[About] BlueLinker is a simple serial communication tool that easily connects to Bluetooth-enabled devices such as Arduino and Raspberry Pi. [Key Features] β’ Automatic BLE device scanning and connection β’ Real-time serial communication (UART) β’ LED control example code included β’ Support for HM-10, ESP32, STM32 [Supported Devices] β’ Arduino (Uno, Mega, Nano) β’ Raspberry Pi β’ ESP32 β’ STM32 β’ BLE modules [Contact] Email: studio11.appdev@gmail.com
JSON Formatter Viewer
Read full descriptionHide full description
Paste messy JSON and get clean, readable, correctly indented output in one tap. JSONViewer formats, validates, and beautifies any payload β right on your iPhone, fully offline. Most JSON tools are websites that make you paste sensitive API data into a stranger's server. JSONViewer keeps everything on your device: paste a response, a config file, or a log export, and it pretty-prints with color syntax highlighting instantly. Invalid JSON is flagged with the exact reason so you fix broken payloads fast β no guessing, no round trips to a browser. WHAT YOU GET - Clean, indented JSON from any pasted or copied payload in one tap - Instant validation that pinpoints exactly why a payload is broken - Minify mode to strip whitespace down to a compact one-liner - An interactive, collapsible tree so you can read deeply nested data at a glance - JSONPath queries that pull the exact value out of a large response - A saved library of your own snippets plus ready-to-use sample payloads PERFECT FOR - Backend and mobile developers debugging API responses on the go - QA engineers checking payloads and config files away from a laptop - Students learning JSON structure with the built-in Learn guide - Anyone who needs to read or clean a JSON blob without opening a website WHY NOT JUST USE A WEB FORMATTER? Online formatters send your JSON to a remote server β a real problem when the payload holds tokens, user records, or internal data. JSONViewer does all parsing on-device, so your data never leaves your phone and works with no signal at all. PRIVACY Your JSON never leaves the device. No accounts, no servers, no tracking β everything runs locally, even in airplane mode. FULL ACCESS The Format tab β paste, validate, beautify, minify, and copy β is free. Premium unlocks the interactive tree view, JSONPath query, saved snippet library, and expand/collapse controls. Premium is available as a weekly or yearly subscription, or a one-time lifetime purchase: - Weekly subscription - Yearly subscription - Lifetime (one-time purchase, no renewal) Payment is charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless turned off at least 24 hours before the end of the current period. Manage or cancel anytime in App Store settings. Paste your first payload and clean it up now. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? https://web-levi.web.app/#contact
Screenshots
Verdict
The clearest difference is in-app purchases: BlueLinker at none against JSON Formatter Viewer's 2. BlueLinker also leads on update cadence (every 3 days vs every 6 weeks). JSON Formatter Viewer's advantage is chart position (#199 vs unranked) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. JSON Formatter Viewer sells 2 in-app purchases, starting at $3.99 per 7 days. BlueLinker asks for nothing beyond the download.
BlueLinker ships an update every 3 days, JSON Formatter Viewer every 6 weeks. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.
| Parameter | BlueLinker | JSON Formatter Viewer |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 3 days β better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Monetization | Free | β |
| Best chart rank | β | #199 β better |
| Devices | iPhone | iPhone |
| Requires iOS | 26.0 | 17.0 β better |
| Further details β not scored | ||
| Size | 8 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | μ€νλμ€μΌλ λΈ | Phuc Pham |
In-app purchases
BlueLinker
No in-app purchases
JSON Formatter Viewer
- Weekly$3.997 Days
- Yearly$19.991 Year
Questions
Is BlueLinker free?
Is JSON Formatter Viewer free?
Do BlueLinker or JSON Formatter Viewer have ads?
Which is updated more often, BlueLinker or JSON Formatter Viewer?
Other comparisons















