IoT App Development Services

The software people see

For most users, the app is the product. A device can have excellent hardware and firmware, but if pairing fails, readings lag or alerts arrive late, people blame the whole product. IoT apps have to handle unreliable connections, devices that sleep to save power, many devices per user and data that arrives out of order.

We build mobile companion apps for consumer and professional devices, web dashboards for operations teams and the cloud services underneath them, designed together so the experience stays consistent.

Problems we solve

• Device pairing that fails or confuses users
• Dashboards that show stale data without saying so
• Alert floods that teach people to ignore notifications
• No way to manage hundreds or thousands of devices at once
• Apps that break when firmware changes

What’s included

How we build IoT apps

We define a clear device contract first: the messages, commands and states a device supports, versioned so apps and firmware can evolve independently. The cloud keeps a “device shadow” or twin with the last known and desired state, so apps stay responsive even when devices are asleep or offline.

1. Device contract1–2 weeks

   Messages, commands, states and versioning agreed with firmware engineers.

2. Cloud services3–6 weeks

   Provisioning, ingestion, device twins, rules and APIs.

3. Apps4–10 weeks

   Mobile and web front ends with offline handling and real-time updates.

4. Field testing2–4 weeks

   Real devices, real networks, real users.

Designing for real-world conditions

We test with physical devices on a range of iOS and Android phones, because Bluetooth behaviour varies between manufacturers and OS versions more than almost any other mobile feature.

Timeline and budget

Typical ranges to help you plan. Your written estimate comes after a free discovery call.

A typical IoT app architecture

Keeping these layers separate means a new device model, a new alert type or a new app screen can be added without touching the rest of the system.

Who uses an IoT app — and what each needs

Many IoT products need two or three of these experiences. Treating them as separate apps or role-based modes — rather than one screen trying to serve everyone — keeps each one simple.

Device onboarding done right

Setup is where most connected products lose customers. Pairing a device, joining it to Wi-Fi and linking it to an account involves Bluetooth permissions, network credentials, cloud registration and sometimes a firmware update — all before the user sees any value.

1. Discover

   Find nearby devices over Bluetooth or a QR code, with clear guidance if permissions are denied.

2. Provision

   Send network credentials securely and confirm the device reaches the cloud.

3. Claim

   Link the device to the user’s account so nobody else can take control of it.

4. Update & confirm

   Apply any required firmware update and show a working first reading or action.

We test onboarding with real routers, weak signals, wrong passwords and interrupted sessions, because that is what happens in homes and on sites.

Connectivity choices and what they mean for the app

Testing an IoT app

• A device lab with each supported hardware revision and firmware version
• Simulated device fleets for testing dashboards at realistic scale
• Network conditioning to reproduce slow, lossy and offline connections
• Bluetooth tests on a range of Android manufacturers, where behaviour varies most
• End-to-end tests from a sensor reading through the cloud to a push notification

Questions to answer before you start

• Which device models and firmware versions must the app support at launch?
• Does the device need to work when the internet is down?
• Who can control a device, and how is access shared or revoked?
• How quickly must alerts reach users, and through which channels?
• Who owns the cloud platform and its running costs?

IoT apps sit on top of device firmware and a cloud back end. We also build the APIs and test automation that hold the system together.

Security for connected apps

An IoT app can unlock a door, change a thermostat or stop a machine, so its security matters more than most consumer apps. We give every device its own identity and credentials, encrypt traffic between app, cloud and device, and check permissions in the cloud for every command rather than trusting the app.

Account sharing is designed deliberately: owners invite others with specific roles, can see who has access and can revoke it instantly. Firmware updates delivered through the app are signed and verified by the device before installation, so a compromised phone cannot push malicious firmware.

Notifications that people do not switch off

Alerts are often the main reason an IoT app is opened. Too many and users mute them; too few and problems are missed. We group related events, let users choose thresholds and quiet hours, and send critical alarms through more than one channel, such as push plus SMS or email, when the situation demands it.

Related services

Part of our IoT & embedded development services. See also Flutter apps and data engineering.

This page is part of IoT & Embedded Development Services — see the full overview for related services, approach and pricing.