ATS MQTT Client vs Bluetooth Serial Connect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ATS MQTT Client
Monitor and control devices connected to the mqtt.ats.pl service in real-time. Sign in with your account to access all your registered devices directly within the application.
- Real-time device monitoring
- Device control
- Integration with mqtt.ats.pl service
- Account sign-in for device access
- Supports iPhone, iPad, and iPod
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Application dedicated for mqtt.ats.pl service. It allows users to monitor their devices, connected with Service, and also to control them in real-time. Thanks to integration with Service all user has to do is sign in with their account and all their devices will be available inside app.
Bluetooth Serial Connect
Control your Arduino projects with your phone. Design custom interfaces with buttons, joysticks, and displays to send and receive data via Bluetooth low-energy modules. An integrated library simplifies the connection process.
- Customizable control boards
- Button and joystick inputs
- Display integration
- Bluetooth low-energy module support
- Arduino library for easy integration
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Turn your iPhone or iPad into a custom control panel for Arduino and BLE projects, without building a dedicated iOS app. Bluetooth Serial Connect lets you design a board, connect to an HM-10-style Bluetooth Low Energy (BLE) UART module, and exchange commands and live readouts with your hardware. The companion Bluetooth Serial Connect Arduino library makes it straightforward to read controls and update displays, indicators, and gauges in your sketch. DESIGN YOUR BOARD Place, move, resize, and customize nine component types: • Buttons with momentary, latch, and repeat behavior • Joysticks, sliders, toggles, and D-pads • Text displays, labels, indicators, and gauges Assign channel numbers that stay fixed when you rearrange controls. Fine-tune colors, labels, value ranges, board appearance, and haptic feedback. Undo and redo changes, duplicate and lock controls, snap them to the grid, and adjust their front-to-back order. START WITH TEMPLATES AND EXAMPLES Explore seven editable board templates for RC cars, robotic arms, menu remotes, sensor hubs, smart-home relays, and more. Companion Arduino sketches and protocol examples help you connect the app to your code. Follow the interactive walkthrough or try a board with simulated data—no hardware required. Import, export, share, and duplicate boards as your projects grow. CONNECT AND TROUBLESHOOT Scan for nearby BLE devices, follow clear connection progress, remember frequently used modules for quick reconnecting, and configure service and characteristic UUIDs. Use the timestamped two-way console to inspect sent and received messages or send console text while you troubleshoot. Setup guides, wiring help, complete examples, and the wire protocol reference are available at bluetooth.henhen1227.com. Bluetooth Serial Connect is designed for HM-10-style BLE modules. Other BLE UART hardware may work when its service and characteristic UUIDs match the app settings. HC-05 and HC-06 Bluetooth Classic modules are not supported. A compatible BLE module is required for live hardware control. FREE OR PRO Start with one board free. Add more by watching rewarded ads, or unlock Bluetooth Serial Pro with a one-time in-app purchase for unlimited boards and no ads. The free version may also show occasional ads after edits. Existing boards remain available to use. No app account is required. Board files stay on your device unless you choose to share them.
Screenshots
Verdict
The clearest difference is rating: Bluetooth Serial Connect at 3.7 against ATS MQTT Client's 3.0. Bluetooth Serial Connect also leads on ratings volume (7 vs 2). ATS MQTT Client's advantage is ads (none vs shown) and iOS requirement (13.0 vs 16.2). On price, review sentiment, update cadence 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.
Bluetooth Serial Connect holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews split almost evenly too, at 0% and 0% positive.
ATS MQTT Client ships an update every 7 months, Bluetooth Serial Connect every 10 months. The most recent releases landed on September 25, 2026 and October 24, 2026 respectively.
| Parameter | ATS MQTT Client | Bluetooth Serial Connect |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 3.7 (7 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 2 | 7 — better |
| Update frequency | Every 7 months — better | Every 10 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.2 |
| Further details — not scored | ||
| Size | 5 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | ATS sp.j. | Henry Abrahamsen |
Customer experience
ATS MQTT Client
Bluetooth Serial Connect
In-app purchases
ATS MQTT Client
No in-app purchases
Bluetooth Serial Connect
No in-app purchases
Questions
Is ATS MQTT Client free?
Is Bluetooth Serial Connect free?
Which has better reviews, ATS MQTT Client or Bluetooth Serial Connect?
Do ATS MQTT Client or Bluetooth Serial Connect have ads?
Which is updated more often, ATS MQTT Client or Bluetooth Serial Connect?
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