IoT companion apps
Control and monitoring apps for connected hardware.
Android & iOS App Development
Flutter apps for IoT devices: BLE and Wi-Fi control, Firebase dashboards, authentication and hardware monitoring.
Overview
What this service covers
Flutter mobile apps that pair with hardware — BLE/Wi-Fi device control, live telemetry dashboards, and the cloud backend behind them. Because the same team builds the firmware on the device side, the BLE/API contract between hardware and app is designed once, not guessed at from a datasheet.
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.
- A single Flutter codebase is needed instead of separate native Android and iOS apps.
- Real-time data is needed instead of relying on a device's small onboard display.
- An existing app's BLE connection is unreliable or drops under real-world conditions.
Capabilities
What we do
- Flutter Android and iOS app development
- Bluetooth and BLE device control
- Real-time device monitoring and telemetry views
- Firebase / cloud database integration
- User authentication and admin panels
- Push notifications, where applicable
Technologies
Tools & platforms
Flutter/Dart for a single Android and iOS codebase, BLE and Wi-Fi communication with the target hardware, and Firebase-style backends for authentication and data.
Flutter / DartBLE / Wi-FiFirebase-style backend
Development Process
How we approach an app project
- 01Requirements & UX flow
Map the screens and the data the app needs to show.
- 02BLE/API integration design
Define the contract between the app and the hardware/backend.
- 03App development
Build the Flutter app against the integration design.
- 04Device pairing & field testing
Test against the real hardware, not just a simulator.
Deliverables
What you receive
- App source code
- Build instructions
- API / integration documentation
Testing & Validation
How apps get tested against real hardware
BLE pairing and reconnect behaviour is tested against the actual target device, not a simulator, since Bluetooth stacks vary enough between phones and firmware versions that simulator testing alone misses real-world dropouts. Where the app talks to a cloud backend, authentication and data sync are checked under intermittent connectivity, matching the conditions a device is actually likely to be used in rather than a clean office Wi-Fi network.
Applications
Where this is used
BLE control apps
Direct Bluetooth control of a device from a phone.
Monitoring dashboards
Live telemetry views for connected hardware.
Related Services
Often paired with
IoT Product Development
The device and cloud side this app connects to.
ESP32 & UWB Development
The firmware exposing BLE/Wi-Fi to the app.
Website Development
A web dashboard alongside the mobile app.
Want more background first? Read How Hardware and Mobile Apps Work Together in Modern IoT Products.
How We Can Help
How PAK-EL LAB Can Help
If your hardware needs a phone app to control or monitor it, we can build the app on its own against an existing device, or the app and firmware together so the BLE/API contract is designed once instead of reverse-engineered from a datasheet. Scope, deliverables, schedule and quotation are confirmed once we know the screens, the data, and how the app needs to talk to your hardware or backend. We work with clients internationally and collaborate remotely as standard practice.
See also: Portfolio · IoT Product Development · Contact
FAQ
Frequently Asked Questions
Do you build native apps or Flutter?
Flutter, by default, so one codebase covers both Android and iOS — this keeps the BLE/API integration consistent across platforms instead of maintaining it twice.
Can the app control hardware over both BLE and Wi-Fi?
Yes, depending on what the device supports — some products use BLE for setup and Wi-Fi for ongoing data, and the app is built around whichever combination your hardware needs.
Do you also build the device firmware or backend, or just the app?
Either. Building the firmware and app together means the BLE/API contract is designed once rather than guessed at from a datasheet, but we also take on the app alone against an existing device.
Can you fix an existing app's unreliable BLE connection?
Yes, that's a common request — reviewing an existing BLE integration and fixing the reconnect/reliability issues rather than rebuilding the whole app.
Discuss Your App Project
Tell us what the app needs to control, show or store.