Matter gives smart home devices a common connectivity standard, but it doesn’t replace the companion app. Figures presented by the Connectivity Standards Alliance put the number of Matter-certified products above 5,900. Each device still needs an app for setup, control, monitoring, and updates.

 The standard helps devices communicate across ecosystems, while brands remain responsible for the user experience. Commissioning, multi-admin access, firmware updates, and alerts require engineers who understand both the device protocol and native iOS and Android development. That combination remains difficult to find. 

This guide compares 10 top IoT app development companies based on their technology stacks and published project work. It also explains how we selected the companies, which app features users now expect, and the warning signs that an existing development partner may no longer fit the product.

How These Companies Made the List

Every company on this list publishes evidence of connected-product work through its website or verified client reviews. That evidence had to name a device, product, protocol, or technical outcome. A general service page wasn’t enough to qualify. 

We also looked for mobile engineering that reaches the device layer, including pairing, provisioning, OTA firmware updates, and live data. Companies that only build dashboards on top of a finished cloud API weren’t included. 

The final list combines full-stack device engineering firms with mobile-focused specialists because products at different stages require different partners. The ranking reflects the depth of each company’s combined mobile and device experience rather than its size.

Ranked List of Top IoT App Development Companies

IoT app development companies create the mobile and web software people use to set up, control, and monitor connected devices. These 10 firms range from end-to-end hardware teams to mobile-focused specialists. The table provides a quick comparison before the detailed profiles.

SQUAD

Best for: Smart cameras and home security products that require integrated firmware and mobile app development

SQUAD is among the IoT app development companies offering end-to-end engineering services across hardware, firmware, cloud platforms, and mobile applications. Its mobile development capabilities include native iOS apps built with Swift, SwiftUI, and Objective-C, alongside Android apps developed using Kotlin and Jetpack Compose. C and C++ support enables low-level communication with connected devices and hardware components.

Its solutions support BLE and Wi-Fi connectivity, secure device pairing, certificate-based authentication, and two-way synchronization of device settings and telemetry. Smart camera applications can incorporate encrypted WebRTC live streaming, two-way audio, and image-based alerts for people, vehicles, animals, and package detection.

SQUAD also supports app releases, A/B testing, Crashlytics and Firebase monitoring, accessibility improvements, over-the-air (OTA) updates, and legacy code migrations. Automated testing with XCTest, Espresso, and Appium helps validate app performance on physical devices through real-device continuous integration.

The company reports a team of more than 700 engineers and 6,500 m² of R&D facilities, supporting over 900 projects, 200 app releases, and 70 launched devices.

Tech stack: Swift, SwiftUI, Objective-C, Kotlin, Jetpack Compose, Java, C/C++, BLE, Wi-Fi, WebRTC, XCTest, Espresso, Appium

Notable work: Field validation of a battery-powered smart doorbell and fisheye image correction for wide-angle security cameras

Axon

Best for: Real estate and smart building apps with connected devices

Axon is a software development company established in 2012, specializing in mobile applications, cloud architecture, and connected digital solutions. Its development teams create native iOS and Android applications, along with cross-platform mobile apps using Flutter.

The company has strong experience in the real estate and PropTech sectors, developing solutions that connect tenant engagement platforms, facility management services, business centers, building management systems, and connected devices. Axon offers flexible engagement models, including dedicated development teams, staff augmentation, fixed-price projects, and time-and-materials contracts.

With a team of more than 140 engineers and over 130 completed projects, Axon brings experience in delivering software solutions for different business requirements. The company is also a member of PropTech Denmark and the Norwegian-Ukrainian Chamber of Commerce.

Tech stack: Native iOS and Android, Flutter, cloud architecture, APIs, connected-device integrations

Notable work: Tenant engagement application for facility services and business centers

Very

Best for: Connected product development combining hardware, firmware, cloud, and mobile applications

Very specializes in end-to-end connected product development, helping businesses bring IoT solutions from concept to production. Its expertise spans hardware engineering, embedded systems, firmware development, wireless connectivity, cloud platforms, and mobile app development for iOS and Android.

The company works across PCB design, sensor integration, real-time operating systems (RTOS), network stacks, and RF engineering. Its wireless capabilities include Bluetooth Low Energy, Bluetooth Mesh, Zigbee, Thread, Z-Wave, Wi-Fi, LTE-M, and NB-IoT, supporting applications that require reliable communication between physical devices and software platforms.

Very has worked with brands such as HP, Vizio, and L’Oréal. Its portfolio includes connected consumer products, industrial IoT systems, and solutions designed to move from early-stage pilots into production. The company is a suitable option for businesses that need hardware and software engineering teams to collaborate throughout the product development lifecycle.

Tech stack: Native iOS and Android, RTOS, Bluetooth LE, Bluetooth Mesh, Zigbee, Thread, Z-Wave, Wi-Fi, LTE-M, NB-IoT

Notable work: Koller smart fish tank, Hop self-service beer kiosk, PowerX pilot-to-production program, and Thrive Global platform

Punch Through

Best for: Bluetooth-heavy medical and consumer device applications

Punch Through specializes in developing software for Bluetooth-connected products, combining mobile app development, embedded engineering, and firmware integration. The company helps businesses build connected applications for healthcare, consumer electronics, and IoT devices, with a focus on reliable communication between mobile devices and hardware.

Its engineering team works with native iOS and Android applications, Bluetooth Low Energy (BLE), and device connectivity. Development capabilities include Bluetooth pairing, peripheral discovery, data synchronization, connectivity troubleshooting, and firmware updates through mobile applications.

Punch Through is also known for LightBlue, a Bluetooth Low Energy testing and debugging tool that helps developers scan nearby peripherals, inspect device characteristics, simulate Bluetooth devices, and troubleshoot connectivity issues. Its technical expertise supports businesses building and maintaining connected medical devices and other Bluetooth-enabled products.

Tech stack: Swift, Kotlin, Core Bluetooth, Android BLE APIs, embedded firmware, cloud architecture

Notable work: LightBlue BLE testing and debugging application, along with mobile software for connected medical and consumer devices

MobiDev

Best for: New or modernized apps for existing hardware products

MobiDev is a software development company that helps businesses build, upgrade, and maintain connected hardware applications. Its services cover mobile app development, firmware integration, cloud connectivity, edge computing, and software modernization.

The company develops native iOS and Android applications using Swift and Kotlin, alongside cross-platform solutions built with React Native and Flutter. This flexibility helps businesses modernize legacy applications, improve device connectivity, and create mobile experiences for hardware products already available on the market.

MobiDev has worked on connected-product solutions, including the CUJO smart home firewall app, the ADB I-CAN home network application, and a Cete Automotive suspension control app. These projects demonstrate its experience with device communication, Bluetooth Low Energy (BLE), and mobile interfaces for connected hardware.

Tech stack: Swift, Kotlin, React Native, Flutter, BLE, cloud platforms, and edge computing

Notable work: CUJO smart home firewall app, Cete Automotive suspension control app, and ADB I-CAN home network application

Mood Up

Best for: Native mobile apps for smart home, security, and connected devices

Mood Up is a software development company specializing in mobile applications, connected-device solutions, streaming applications, and web platforms. Its services cover the development of native iOS and Android apps, along with cross-platform products tailored to different business requirements.

The company uses Swift and Objective-C for iOS development and Kotlin and Java for Android applications. React Native and Flutter support projects that require cross-platform compatibility and code reuse.

Mood Up also develops mobile apps that communicate with connected hardware through Bluetooth Low Energy (BLE), using technologies such as Core Bluetooth. Additional services include application audits, product launch support, and dedicated development team extensions.

The company has completed more than 80 projects and has worked with clients including Akamai, Unilever, and Spar.

Tech stack: Swift, Objective-C, Kotlin, Java, React Native, Flutter, Core Bluetooth

Notable work: Sky Protect app and Melisten app

SumatoSoft

Best for: Healthcare and climate control apps

SumatoSoft has been developing custom software solutions since 2012, with experience in web, mobile, and IoT application development. The company serves industries such as healthcare, retail, manufacturing, smart homes, and automotive.

Its mobile development services include native and hybrid applications for iOS and Android, as well as progressive web apps. SumatoSoft also integrates mobile applications with connected devices and cloud platforms, including AWS IoT Core and Azure IoT Hub.

The company’s project portfolio includes thermostat and air conditioning control applications, real-time blood glucose monitoring solutions, and the Dexai IoT platform. Its healthcare work includes mobile apps that communicate with medical devices, manage connectivity and communication protocols, and support secure data processing.

Tech stack: Native iOS and Android, hybrid mobile development, PWA, AWS IoT Core, Azure IoT Hub

Notable work: Thermostat remote control app, blood glucose monitoring app, climate control applications, and Dexai IoT platform

Sirin Software

Best for: Embedded software, Linux-based devices, and connected mobile applications

Sirin Software specializes in embedded software engineering and connected product development, helping businesses build and maintain hardware-integrated software solutions. Its services cover system architecture, electronics design, firmware development, backend systems, mobile and web applications, testing, and ongoing maintenance.

The company focuses on Embedded Linux, C++, and firmware engineering, with additional capabilities in cloud development, DevOps, AI, and computer vision. This combination supports connected devices that need reliable communication between hardware, software, and companion applications.

Its reported project experience includes developing a smart outdoor systems platform, upgrading Wi-Fi firmware for an industrial wearable manufacturer, and creating a mobile workflow automation platform for warehouse operations.

Tech stack: Embedded Linux, C++, firmware engineering, native iOS and Android, cloud platforms, DevOps, AI, and computer vision

Notable work: Smart outdoor systems platform, industrial wearable Wi-Fi firmware upgrade, and warehouse workflow automation system

Digiteum

Best for: Enterprise mobile apps and connected IoT solutions

Digiteum provides custom software development services for businesses that need scalable mobile applications, enterprise platforms, and connected digital solutions. Its expertise includes web and mobile app development, cloud engineering, SaaS platforms, and data-intensive software systems.

The company works with native mobile technologies and frameworks such as .NET, Java, Python, Node.js, React, and Angular. Its IoT development capabilities cover embedded software, firmware, cloud infrastructure, mobile applications, and web interfaces that connect devices with business systems.

Digiteum also supports microservices architecture, legacy system modernization, and staff augmentation to help enterprises expand their engineering teams. Its experience includes developing data-driven platforms and enterprise software solutions, including a cloud financing platform for Siemens Financial Services.

Tech stack: Native mobile, .NET, Java, Python, Node.js, React, Angular, cloud technologies, microservices

Notable work: Enterprise IoT software, data-intensive connected systems, and the Siemens Financial Services cloud financing platform

Eastern Peak

Best for: Connected car and field service apps

Eastern Peak is a software development company specializing in custom software, mobile applications, and connected technology solutions. With a team of more than 250 engineers, the company helps businesses develop scalable digital products for automotive, IoT, and field service applications.

Its mobile development expertise includes native iOS development using Swift and Objective-C, along with Android development using Java and C/C++. The company also works with cross-platform technologies such as React Native and Xamarin, supporting applications across mobile, web, and connected device ecosystems.

Eastern Peak’s automotive solutions include connected car applications, real-time vehicle diagnostics, predictive maintenance, and on-demand repair platforms. Its experience also extends to IoT-enabled irrigation devices and customer service applications, combining mobile software with connected hardware to support practical business requirements.

Tech stack: Swift, Objective-C, Java, C/C++, React Native, Xamarin

Notable work: Connected car services applications, IoT irrigation devices, and on-demand vehicle repair platforms

Coherent Lab LLP

Best for: Connected mobile apps, IoT solutions, and custom software development

Coherent Lab LLP is a software development company founded in 2012, delivering custom software, mobile applications, web platforms, and emerging technology solutions for startups, small and medium-sized businesses, and enterprises.

Its mobile development capabilities include native iOS and Android applications, cross-platform development, and backend integrations. The team focuses on building scalable, user-friendly applications that connect digital platforms with business operations, connected devices, and real-time data.

For connected car and field service projects, Coherent Lab can support applications involving vehicle service management, real-time monitoring, maintenance workflows, device connectivity, and on-demand service experiences. Its broader development expertise also covers UI/UX design, cloud integration, AI-powered functionality, and custom business applications, helping clients build connected digital products around their operational needs.

Tech stack: Swift, Kotlin, Java, React Native, Flutter, cloud technologies, APIs, and IoT integrations

Notable work: Custom mobile applications, IoT-connected platforms, real-time monitoring solutions, and digital service management systems

Mobile Features Users Now Expect From an IoT App

Users often judge the entire connected product by the app on their phone. These six capabilities now form the baseline for a reliable mobile experience:

• Recoverable setup. The app should guide users through pairing and let them recover from a failed attempt without a factory reset.
• Current device status. Controls, telemetry, and device state should refresh within seconds, even on a weak network connection.
• Resumable firmware updates. OTA updates should continue in the background and recover from interrupted Bluetooth, Wi-Fi, or internet connections.
• Shared access. Family members, coworkers, or other authorized users should be able to control the same device with appropriate permissions.
• Useful notifications. Alerts should include a snapshot, sensor reading, or event details instead of forcing users to open the app for basic information.
• Local control. Essential features should remain available over BLE or local Wi-Fi when the cloud service or internet connection is unavailable.

If your current app lacks two or more of these capabilities, include them as priorities in the brief for your next development partner.

Signs It's Time to Switch IoT App Vendors

Vendor problems appear as repeated delivery patterns before the contract ends. Watch for these four warning signs:

• Tickets repeatedly move between the mobile and firmware teams because neither side owns cross-layer problems.
• App Store and Google Play ratings fall after major iOS or Android updates, while fixes take weeks to arrive.
• Mobile developers can’t explain the device protocol without consulting a separate hardware team.
• OTA updates happen rarely because each release carries a high risk of failure.

If several of these issues sound familiar, ask a new vendor to audit the device protocol, mobile codebase, and firmware integration before the next release cycle.

Conclusion

Connected hardware evolves through several revisions, while the mobile app must support every version. New devices, operating system releases, protocol changes, and connectivity standards all affect the same codebase. Architecture decisions made during the first release can therefore shape the product for years. Choosing among the top IoT app development companies means selecting a team that can maintain that codebase as the hardware and mobile platforms evolve. Look for published evidence of device-level mobile work, testing on physical hardware, and clear ownership across app and firmware. That experience gives future releases a more stable foundation.