Design
Schematic and PCB layout, sized and powered to match what the app and firmware need.
IoT App Development for Connected Hardware
Mobile and web apps that pair with connected hardware — BLE/Wi-Fi device control, real-time telemetry dashboards and the cloud backend behind them. When a project needs it, we can also design the board the app runs on — PCB design, prototyping and bulk production — as an optional complementary service.
Overview
What this service covers
This service is built around the software: a cross-platform Flutter app for Android and iOS, BLE and Wi-Fi communication with the device, MQTT and REST APIs, live telemetry dashboards on mobile and web, and the cloud backend that stores device data and handles remote commands. If you also need the device built, PCB design, prototyping and manufacturing support is available as a complementary add-on — but the core of this engagement is the app, not the board.
⚡ Hardware Add-On
Also need the hardware built? PCB design, prototyping & bulk production
Many IoT projects eventually need a custom board as well as an app. When yours does, schematic capture, PCB layout, prototyping and manufacturing support can run alongside the app as one engagement, so the app's BLE/API contract and the board's pinout are designed together instead of guessed at from a datasheet after the fact. If your hardware already exists, you can skip this entirely.
What we do on the hardware side
- Schematic capture and multilayer PCB layout
- Power-supply and power-electronics design
- Component selection and footprint verification
- RF-aware layout for boards carrying a Wi-Fi, BLE or LoRa module
- Design-for-manufacturing (DFM) review before release
- Gerber, BOM and pick-and-place file preparation
- Bulk / production manufacturing coordination once a design is ready to scale
KiCadEasyEDAAltium DesignerESP32 / STM32 / Arduino
Prototype
A first working board to validate the design before committing to a production run.
Produce
DFM review, then BOM, Gerbers and manufacturer coordination once the design is ready to scale.
Client Problems
Problems this service solves
- Working hardware exists but there's no way for a user to control or monitor it from a phone or browser.
- A single cross-platform app is needed instead of separate native builds for each device platform.
- Real-time data is needed instead of relying on a device's small onboard display.
- An existing app's BLE or Wi-Fi connection to the device is unreliable in the field.
- A product concept exists but there's no schematic or board yet, or an existing board has noise, thermal or reliability issues.
- A design needs to move from a one-off prototype toward a small or bulk production run.
Capabilities
What we do
- Flutter Android and iOS companion app development
- Bluetooth (BLE) and Wi-Fi device communication
- Real-time telemetry dashboards, mobile and web
- Firebase-style cloud database and backend integration
- User authentication and admin/device management
- Push and alert notifications for device events
- Optional PCB design and manufacturing support — see below
Technologies
Tools & platforms
Flutter/Dart for a shared Android + iOS companion app, BLE/Wi-Fi/MQTT for device communication, and Firebase-style backends or REST APIs for the cloud side.
Flutter / DartBLE / Wi-Fi / MQTTFirebase-style backend
Development Process
How we approach a project
- 01Requirements & device contract
Map the screens and the data the app needs to exchange with the device — including PCB design if the hardware doesn't exist yet.
- 02BLE/API integration design
Define the contract between the app, the hardware and the backend.
- 03App & hardware development
Build the Flutter app and any web dashboard, alongside PCB layout and prototyping if that's part of the project.
- 04Device pairing, field testing & production
Test against real hardware, then move to bulk production once the design is validated.
Deliverables
What you receive
- App / dashboard source code
- Build instructions
- API / integration documentation
- Schematic and PCB design files, BOM and Gerbers — for projects that include hardware
Applications
Where this is used
IoT companion apps
Control and monitoring apps for connected hardware.
BLE control apps
Direct Bluetooth control of a device from a phone.
Monitoring dashboards
Live telemetry views for connected hardware, mobile or web.
Real Examples
IoT apps we've actually shipped
VeriGuard
BLE-paired vehicle security access — passcode and fingerprint management.
ChannelCast
Multi-channel hardware audio routing with SD card, phone and live mic sources.
CueFire
Cue-based show control over BLE/UART/LoRa/RS485, with safety-critical Live Mode.
ImmobiGuard
Remote vehicle immobilizer with a scheduled shutdown timer and panic alert.
WiperLift
BLE control of wiper lift, wipe and washer-fluid actuation on a vehicle relay module.
PCB & Hardware Design
The board design behind projects like these — schematic through manufacturing-ready layout.
Related Services
Often paired with
iOS App Development
The iOS build of the companion app.
Android App Development
The Android build of the companion app.
Web App Development
A web-based monitoring dashboard.
Technical Guides & Resources
Related Engineering Guides
IoT Product Development Cost 2026
A comprehensive engineering breakdown across hardware, embedded firmware, cloud pipelines, and companion apps.
ESP32 IoT Product Development
From breadboard proof-of-concept to custom PCB layout, secure OTA updates, and volume manufacturing.
BLE vs. Wi-Fi for IoT Apps
Choosing the ideal wireless architecture for battery longevity, throughput, local latency, and cloud telemetry.
Why IoT Needs Companion Apps
How mobile apps serve as the real-time user interface, setup wizard, and secure bridge for smart hardware.
FAQ
IoT App Development FAQ
Common questions about building the app for a connected product. For general questions about working with us, see the main FAQ page.
What is an IoT companion app?
A mobile or web app that pairs with a piece of connected hardware to control it, set it up and show its data, usually over BLE or Wi-Fi. It replaces a device's small screen or physical buttons with a full interface on a phone or in a browser.
Can you build apps that communicate over BLE and Wi-Fi?
Yes. We build Bluetooth Low Energy (BLE) and Wi-Fi device communication, including pairing, reconnection handling and field testing against real hardware.
Can you develop both Android and iOS IoT apps?
Yes, usually from a single Flutter codebase so one app covers both platforms. See our Android app development and iOS app development pages for platform-specific detail.
Can the app display real-time sensor data?
Yes. We build real-time telemetry dashboards on mobile and web, with live readings, charts, history and push or alert notifications for device events.
Can you integrate MQTT, REST APIs or cloud backends?
Yes. We connect the app to MQTT brokers, REST or GraphQL APIs and Firebase-style backends for device data, user accounts and remote commands.
Can you work with existing IoT hardware?
Yes. If you already have a working device, we build the app around its existing BLE or Wi-Fi interface. If the hardware does not exist yet, PCB design is available as an optional complementary service.
Discuss Your IoT App or Hardware Project
Tell us what you're building — app, hardware, or both — and what it needs to do.