Crazyflie 2 vs Bluetooth Serial Connect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Crazyflie 2
Control a palm-sized, open-source quadcopter directly from your iOS device. Utilize on-screen joysticks or phone tilting for flight. Customize control sensitivity and modes, and update the drone's firmware.
- Bluetooth low energy connectivity
- On-screen joystick controls
- Phone tilting flight control
- Configurable control sensitivity
- Configurable control modes
- Firmware updates
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Control Crazyflie 2.x directly from your iOS device using Bluetooth low energy. The Crazyflie 2 is a flying open source development platform in the form of a palm sized quadcopter. The platform supports hardware expansions as well as advanced software features for development. This app requires a Crazylfie with a recent firmware. Firmware >= 2024.02 are compatible. Functionalities: - Connect to a Crazyflie 2.0 using BLE - Control a Crazyflie 2.0 using on-screen joysticks or by tilting the phone - Configurable control sensitivity - Configurable control mode - Update the Crazyflie firmware with latest version
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
Crazyflie 2 and Bluetooth Serial Connect both sit at 3.7 stars, but that hides the real split: 50% of Crazyflie 2's written reviews are positive against 0% of Bluetooth Serial Connect's. Crazyflie 2 also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.2). On price, rating, ratings volume and update cadence 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.
On the App Store both sit at effectively the same score — 3.7 for Crazyflie 2 against 3.7 for Bluetooth Serial Connect. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews are what separate them: 50% of Crazyflie 2's written reviews are positive against 0% of Bluetooth Serial Connect's.
Crazyflie 2 ships an update every 13 months, Bluetooth Serial Connect every 10 months. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.
| Parameter | Crazyflie 2 | Bluetooth Serial Connect |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 3.7 (7 ratings) |
| Positive reviews | 50.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 | 7 — better |
| Update frequency | Every 13 months | Every 10 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.2 |
| Further details — not scored | ||
| Size | 8 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Bitcraze | Henry Abrahamsen |
Customer experience
Crazyflie 2
Bluetooth Serial Connect
In-app purchases
Crazyflie 2
No in-app purchases
Bluetooth Serial Connect
No in-app purchases
Questions
Is Crazyflie 2 free?
Is Bluetooth Serial Connect free?
Which has better reviews, Crazyflie 2 or Bluetooth Serial Connect?
Do Crazyflie 2 or Bluetooth Serial Connect have ads?
Which is updated more often, Crazyflie 2 or Bluetooth Serial Connect?
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