BLExAR
Bluetooth + Arduino
$4.99 · Designed for iPad. Not verified for macOS.
BLExAR 3.0 is here: a ground-up rewrite with a bench-instrument design, custom control Panels, Live Activities and faster live plots. Your existing sketches still work.
BLExAR turns your iPhone or iPad into a pocket bench instrument for Arduino-class boards over Bluetooth Low Energy. Connect to a board with an HM-10 style UART module (CC2541, AT-09, JDY-08, SH-M08), an nRF52840 MakerBLE board or a Seeed XIAO ESP32-C6, then switch pins, stream sensor values, plot and record them, all without writing an app of your own.
BLExAR 3.0 is a complete rewrite that keeps working with the sketches and tutorials written for earlier versions: the same commands, the same pins and the same CSV files.
CONTROL
• Switch digital pins and set PWM from pin tiles laid out like your board's header
• Analog sliders for the A-pins
• Board profiles for Arduino Uno, Arduino Nano, MakerBLE (nRF52840), Seeed XIAO ESP32-C6 and the classic 2.7 layout
• TX/RX activity lights show every message to and from the board
DATA
• Live chart of the comma-separated values your board sends, with Run/Hold and 10 s, 1 min and 10 min windows
• Readout cards with min, max and standard deviation for each series, plus the incoming stream rate
• Record sessions to CSV, optionally with your location on each row, and keep recording in the background
• Browse, reopen and share recorded sessions; they also appear in the Files app
CONSOLE
• Serial terminal to send and receive text, with a hex view and quick command keys
PANELS
• Build your own control dashboards with buttons, toggles, sliders, a joystick and gauges bound to your board's commands and data columns
• Share panels with others as files
ALWAYS AT HAND
• Live Activity on the Lock Screen and in the Dynamic Island while connected or recording
• Control Center controls to toggle a pin without opening the app
• Scan list puts UART-ready boards first, ordered by signal strength
• Automatic reconnect after a dropped link
• Light and dark appearance and Dynamic Type
BLExAR is made for makers, students, teachers and engineers. Tutorials and example sketches are at makersportal.com.
BLExAR 3.0 is a complete rewrite for iOS 17 and later.
• Workbench design: a bench-instrument look with pin LEDs, TX/RX activity lights, light and dark appearance and Dynamic Type
• Panels: build your own dashboards with buttons, toggles, sliders, a joystick and gauges, and share them as files
• Faster live plotting with Run/Hold, time windows and min, max and σ readouts for each series
• Recording to CSV with optional location, background recording, and a Sessions library that also appears in the Files app
• Live Activity and Dynamic Island while connected or recording, plus Control Center controls for pins
• Board profiles for Arduino Uno, Nano, MakerBLE (nRF52840) and Seeed XIAO ESP32-C6
• Scan list puts UART-ready boards first, ordered by signal strength
• Automatic reconnect after a dropped link
• Fully compatible with your existing sketches, commands and CSV files from BLExAR 2.7
The developer, Maker Portal LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Maker Portal LLC
- Size
- 4.3 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Maker Portal LLC
