MicroBlue vs BE40 E6B
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MicroBlue
This app connects to microcontrollers via Bluetooth/BLE, offering a customizable interface for control and interaction. It supports various components like joysticks and buttons, streamlining hobbyist and professional projects.
- Bluetooth/BLE connectivity
- Customizable control interface
- D-pads, joysticks, buttons, sliders
- Text input support
- Works with Arduino and Raspberry Pi
- Writable custom service communication
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MicroBlue is a companion app for microcontroller projects. Connect to your board over Bluetooth Low Energy (BLE), control it from your phone, and see what it sends back. DRIVE Two halves, each a D-Pad, Joystick, Tank (one stick per side), Tilt (steer by tilting the phone), Panel or Console. Leaving the Drive screen or the app sends the stop position. Buttons, switches, sliders with your own min and max, steppers, color buttons and text fields. Each sends its value with an id you choose. DISPLAYS Show what your board sends: a Value with its unit, a Bar, an LED, or a Chart of the last 10, 30 or 60 seconds that draws up to 4 lines from values like x,y,z. CONSOLE AND RECORDING See every message sent and received. Record a session to a CSV file and open it in Google Sheets, Excel or Numbers, great for classroom experiments. LAYOUTS Save a layout for each project and switch between them. Share a layout with a whole class by QR code or link; students add it with Scan QR Code. A STEADY CONNECTION • A heartbeat lets your board's program stop safely when the phone goes out of range or the app closes (can be turned off in Settings) • Reconnects to your board automatically • Shows the signal strength • Choose what to send to and receive from on each board WORKS WITH Boards with built-in BLE or an HM-10 module, such as the Arduino UNO R4 WiFi, Arduino UNO R3 or UNO R4 Minima with an HM-10, Raspberry Pi Pico W (or Pico with an HM-10) and ESP32-S3. Messages use a simple format in both directions: [0x01] id [0x02] value [0x03]. Help in the app shows what each control sends. Requires iOS 16.4 or later. For assistance and more information, visit: https://snappyxo.io/microblue.
BE40 E6B
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BE40 E6B Flight Calculator Comprehensive utility application for BE40 series aircraft pilots featuring: • Refueling Calculator - Precise fuel distribution calculations - Digital fuel order generation - Multiple unit systems support • Take-Off Thrust Calculator - Real-time thrust calculations - Environmental conditions integration - System configuration support • Long Range Cruise Calculator - True Airspeed (TAS) calculations - Fuel flow optimization - GPS altitude integration • Aircraft Management - Multiple aircraft profiles - Customizable settings - Digital signature support Supports all BE40 variants: Diamond IA/IA+, Beechjet 400/400A, Hawker 400XP, Nextant 400XT/XTi Features offline functionality and professional PDF generation.
Screenshots
Verdict
The clearest difference is price: MicroBlue at Free against BE40 E6B's $24.99. BE40 E6B's advantage is update cadence (every 9 days vs every 5 months). On ads, in-app purchases, 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
MicroBlue is free to download; BE40 E6B costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MicroBlue ships an update every 5 months, BE40 E6B every 9 days. The most recent releases landed on November 12, 2026 and November 8, 2026 respectively.
| Parameter | MicroBlue | BE40 E6B |
|---|---|---|
| Price | Free — better | $24.99 |
| Rating | 4.7 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 5 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.4 — better | 17.5 |
| Further details — not scored | ||
| Size | 38 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Mechanismic Inc. | Stefan Genszky |
In-app purchases
MicroBlue
No in-app purchases
BE40 E6B
No in-app purchases









