Bluetooth Serial Connect vs Main
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Main
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Main-Tain keeps everything you own running. Cars, homes, boats, motorcycles, RVs, tractors, equipment — one app, one schedule, nothing forgotten. START FREE Track your first vehicle, home, or machine at no cost, with every feature included. Not a trial — no countdown, no card required. Subscribe when you're ready to add more. EVERYTHING IN ONE PLACE Add what you own and Main-Tain keeps its full history: what was serviced, when, what it cost, and who did it. Stop digging through the glovebox. SCHEDULES THAT FIT Start from recommended intervals or set your own — by mileage, by time, or by engine hours. A tractor and a sedan don't need the same plan, so they don't get the same one. REMINDERS THAT LAND Get notified when something is coming due, before it becomes a repair bill. RECEIPTS AND PHOTOS Attach receipts, invoices, and photos to any service record. Warranty claims and resale conversations get a lot easier when you can show the paperwork. BUILT FOR RESALE Complete, documented service history is what separates a fair price from a lowball offer. Main-Tain keeps yours ready. WORKS OFFLINE Log service in a garage, a barn, or a driveway with no signal. It syncs when you reconnect. SUBSCRIPTION Main-Tain is free for your first item. A subscription adds unlimited vehicles, homes, and equipment: • Monthly — $0.99 • Yearly — $9.99 Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless turned off at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Terms of Use: https://main-tain.app/terms Privacy Policy: https://main-tain.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Bluetooth Serial Connect at none against Main's 2. Main's advantage is ads (none vs shown) and update cadence (daily vs every 10 months). On price, device support and iOS requirement 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. Main sells 2 in-app purchases, starting at $0.99 per month. Bluetooth Serial Connect asks for nothing beyond the download.
Bluetooth Serial Connect ships an update every 10 months, Main daily. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.
| Parameter | Bluetooth Serial Connect | Main |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (7 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 10 months | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.2 | 16 — better |
| Further details — not scored | ||
| Size | 24 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Henry Abrahamsen | Hayden Patteson |
In-app purchases
Bluetooth Serial Connect
No in-app purchases
Main
- Monthly Main-Tain Subscription$0.991 Month
- Main-Tain Yearly Subscription$9.991 Year
Questions
Is Bluetooth Serial Connect free?
Is Main free?
Do Bluetooth Serial Connect or Main have ads?
Which is updated more often, Bluetooth Serial Connect or Main?
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