IoT App Development: How To Create An IoT Application?

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Relia Software

Duc Toan

Relia Software


9 Steps to create an IoT App: Step 1. Define The Requirements; Step 2. Select A Platform; Step 3. Choose The Right Hardware; Step 4. Select The Network Protocol

IoT App Development Tutorial

Table of Contents

Once unusual, the Internet of Things is now everywhere: at home, in the office, on the street, at supermarkets, and even in the countryside. Every second individual has a smart device, including fitness trackers, robot vacuums, TVs, toasters, and sensors and devices. IoT app development is a good startup business concept because of the increasingly higher demand for such devices.

Learn more about the Internet of Things (IoT), the steps to create an IoT app, and the associated costs via this article.

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What is IoT App Development?

IoT app development is the process of making software applications that employ IoT technologies to improve IoT devices' functioning and user experience. The phrase "Internet of Things" (IoT) describes a system of interconnected devices that may communicate with one another and share data without the need for human intervention. These solutions are compatible with any type of connection, whether it is cable or wireless technology. The mechanism that allows for the linking of such devices is described as the machine-to-machine (M2M) principle.

IoT apps can link up with devices via the internet and sensors to provide capabilities like remote monitoring, battery status updates, and predictive maintenance notifications. These apps can boost device efficiency, convenience, and sustainability, benefiting manufacturers and users.

Suppose your smartphone, cooling, and heating systems are connected to a smart thermostat. As a result, you may control the indoor climate without leaving the bed. If you happen to wake up to a hot and sunny day, you can easily chill off your room by turning on the air conditioner before you start your day. Turning on the heating in advance will make your home warmer when cold and rainy weather is predicted. Could it be real?

What is IoT App Development?
What is IoT App Development? (Source: Internet)

Industries That IoT App Development Should Be Applied


All stakeholders benefit from IoT app development in healthcare. IoT monitors patients and devices. Medical businesses can reduce costs by tracking equipment location and employee engagement.

Some IoT devices are, for example, insulin pumps, oxygen pumps, wheelchairs, defibrillators, wearables, tiny sensors, and weight scales. They monitor patients' conditions, enabling early intervention, precise diagnosis, patient satisfaction, and treatment efficiency.

>> Read more about Healthcare sector:


IoT devices might have the most impact on Logistics sector. Shipping products and people can be facilitated by an Internet of Things platform. It may remotely control vehicles, warehouses, and goods via RFID tags, GPS trackers, antennas, chips, or satellites.


IoT app development offers subscribers online anti-theft protection, roadside assistance, real-time traffic information, and more. Moreover, the vehicle industry may leverage the Internet of Things to connect the entire transportation infrastructure. 

Vehicles can transmit their position and speed, preventing accidents and improving traffic flow. Smartphone apps can let pedestrians change traffic signals, get cabs, and track their arrival.


By gathering data from linked devices like telematics in vehicles, the IoT system lets insurance companies analyze risk and create more personalized and cost-effective insurance policies.


Retailers are using smart sensors and devices to improve shopping. It locates items and allows cashierless checkout. 

AmazonGo, an experimental grocery shop where customers scan a QR code at the door, put groceries in a bag, and leave, is a popular example. Walk-Out technology scans bags and invoices customers’ Amazon accounts.

IoT technology can assist in organizing a warehouse by controlling inventory and reducing stockouts and overstocking. 

>> Read more: How Will On-Demand Delivery Services Impact Retail Stores?


In manufacturing, Industrial IoT uses sensors to detect and rapidly resolve production issues like machine downtime, anomalies, and breakdowns. It helps turn data into insights about manufacturing operations, plant KPIs, and process changes.

This data-driven method improves manufacturing organizations' supply chain management, inventory tracking, and production efficiency.

Smart Homes 

Owners can take full control of their houses by utilizing IoT apps to monitor other people’s presence and add locks. By tracking electricity and water use, they may save money on public utilities. 

IoT development increases their living comfort because appliances can be controlled remotely in automated homes. For example, they can modify room brightness and temperature, record TV shows, and change background music. 


IoT has great promise in banking and finance sector. Based on data, banks can employ IoT to create a more connected environment and personalize customer experiences.

Real-time data from cameras, sensors, and gadgets helps banks and financial institutions monitor and secure their physical premises, like ATMs. 

Customers can safely make contactless payments with their smartphones and wearables utilizing IoT devices. 

Smart Cities

This is the wave of the future in urban areas; it's like smart houses but much larger. The IoT app development serves an urban area to improve the quality of life for its residents. 

Smart Farming

When thinking about the IoT development, many people fail to consider the smart farming sector. A wide variety of agricultural applications exist for such devices. It includes but not limited to: soil, air and humidity quality monitoring, irrigation system automation, and the detection of soil contaminations.

Current Types of IoT Application

Types of IoT App


IoT Smart Car Apps

Smart cars with current electronics and system-driven AI demonstrate IoT and automotive sector integration. The smart automobile uses IoT devices for maintenance and notifications. 

Vehicle IoT devices capture data using RFID, GPS, and OBDII sensors. Speed, idle, driver behavior, vehicle location, fuel usage, load, and temperature are monitored.

IoT Smart Home Apps

IoT app development improves communication and quality of life in smart homes. Internet-connected devices in a smart home offer remote monitoring and management of appliances and systems like lighting and heating.

However, engineers and developers must create systems to protect customers and ensure stability.

IoT Smart Office Apps

IoT technology connects many office devices to the Internet for remote control. These devices operate and collect data without human interaction.

Human resources can be used for more complex tasks that need creativity since routine tasks can be mechanized. The number of employees may decrease, lowering business operational costs.

IoT Ride Booking Apps

A taxi booking app matches passengers with nearby drivers. The driver chooses whether to serve you.

A taxi or ride booking IoT app development contains three parts: the user, the driver, and the administrator. These three have different sets of features that should work together to deliver a consistent and secure cab booking procedure.

IoT Educational Apps

IoT devices give students reliable access to learning resources, communication channels, proper understanding, and real-time progress tracking for teachers.

Mobile technology and IoT can help schools improve campus security, track resources, and provide more classroom material. 

Teachers can use this technology to create “smart lesson plans,” instead merely stoic ones.

IoT Food and Restaurant Apps

IoT Food and Restaurant Apps show local cafe and restaurant menus. Choose and order your meal from anywhere with your smart device. Not having a mediator write down the order saves time.

Tracking an order with a mobile app is easy. Customers may track online food deliveries.

IoT Healthcare Apps

IoT app development in healthcare involves bedside monitors, smartwatches and fitness trackers, implanted medical devices, and any other gadget that transmits or receives a signal with data to be retrieved or stored elsewhere.

IoT sensors collect, communicate, and store health data, enabling data analytics and smart healthcare apps for risk factor detection, sickness diagnosis, treatment, remote monitoring, and self-management.

IoT eCommerce Apps

Recently, e-commerce technology has changed drastically. Businesses must employ the correct technology, including IoT, to satisfy clients, as people's hectic lifestyles change and they prefer online buying.

IoT devices share data over the Internet, helping retail and e-Commerce enterprises work efficiently.

IoT Delivery Apps

Delivery alerts and notifications can be automated using IoT delivery management. Managers can rapidly detect unexpected delays and driver whereabouts by monitoring real-time progress.

This means management can track their drivers more readily than before. Many programs include restaurant, convenience shop, supermarket, and liquor store delivery and pickup.

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IoT Social Networking Apps

Social media and IoT monitoring are ideal. As businesses globally seek a more efficient way to monitor, listen to, and analyze social media data, IoT offers a simple way to aggregate social data without investing time or energy.

IoT Social Network App services can also provide a simple and effective toolkit for raising awareness and taking action on youth concerns and interests.

IoT Logistics Apps

Smart logistics allows near-real-time product and service tracking. Ecommerce companies, app-based cab services, and food delivery companies have long used smart logistics.

Logistics and transportation companies use IoT and wearable technology to track vehicles, people, and assets, monitor storage and delivery conditions, and improve on-site safety and security.

IoT Game Apps

In some games, sensor-based technologies attached to wearables allow the character to move like the player in real life.

You may also utilize the Internet of Things to connect your console, desktop, laptop, smartphone, or tablet to a friend's device and play games anytime, anywhere. Chips and sensors allow gadgets to connect each other over the Internet.

Market Trends of IoT App Development

  • Artificial Intelligence and Machine Learning: Data science is developing, allowing robots and sensors to autonomously evaluate data in real time and make intelligent judgments, increasing productivity and lowering costs.

  • Smart Cities: IoT app development is increasingly focused on smart cities, where sensors and electronics track and enhance traffic, energy efficiency, and public services. Thus, metropolitan regions' environmental effect and residents' quality of life are expected to be improved.

  • Blockchain: Blockchain lets mobile, hardware, and sensor devices connect safely and autonomously. Blockchain can secure data and transactions and is transparent and impenetrable.

  • Edge Computing: Edge computing speeds data processing and analysis, reducing congestion and increasing productivity.

  • 5G Networks: makes IoT device connectivity faster and more dependable. This will enable sophisticated applications like remote surgery robots and self-driving autos.

>> Read more about AI:

How Does An IoT App Work?

An IoT app is built to communicate with and control IoT devices, such as sensors, cameras, thermostats, and other internet-connected smart gadgets. How would it work? Explore here!

  • Data Collection: IoT devices gather and send data to the IoT app via the Internet. Data may include temperature, humidity, location, movements, and more.

  • Data Processing: The IoT app analyzes received data to gain insight. The app may use algorithms, machine learning models, and other methods to understand data.

  • User Interface: The IoT software displays processed data intuitively. It may be a mobile, web, or desktop app, depending on the user's device.

  • User input: Users can set temperatures, lights, and IoT device settings on the IoT app.

  • Device Control: The IoT app commands IoT devices based on user input. If the user wants to turn on a light, the IoT app tells the lamp to.

  • Data Storage: The IoT program may store processed data in a database for future analysis and reference.

  • Security: The IoT app needs secure communication protocols, authentication, and access control to prevent data breaches.

The typical IoT app connects to devices, collects data, processes it, shows it to the user, and controls the devices based on user interaction. The app's major goal is to monitor and control connected devices with a smooth user experience.

Architecture Basics of IoT App Development: 4 Main Components


Hardware can include cell phones, control panels, motion sensors, measuring equipment, and other gadgets. The Internet of Things is built on it. 

Startups usually partner with third-party companies that provide ready-made and customized IoT gear, so you don't have to worry.


Cloud is the key component of the IoT system. Simply described, Cloud is a network of servers with remote-accessible databases. 

All data from smart devices is gathered, analyzed, and stored in Cloud. The benefit of cloud-based platforms is that user data is stored without physical space.


Software manages all IoT devices. The software should be cloud-based, whether mobile, web, or cross-platform apps. Also, users should have access to a dashboard where they can view data gathered from sensors and devices, and APIs should be used correctly.


Communication between all IoT devices is established by network. Depending on the use case circumstances, the connection can employ various data and network protocols, such as WiFi, Bluetooth, LAN for stationary devices, HTTP, and others.

Tech Stack You Need To Know For Developing An IoT Application

Programming Languages

  • C/C++ 

  • JavaScript 

  • Python 

  • Ruby

  • Java

  • Rust


  • Node.js 

  • IoT.js 

  • Device.js 

  • Angular 

  • Vue

Cloud Platforms

  • Arduino (open source)

  • AWS (Amazon Web Services) IoT

  • Google Cloud

  • IBM Watson

  • Microsoft Azure IoT

  • OpenHAB

  • Open Remote

  • ThingWorx

Machine Learning

  • TensorFlow

  • OpenCV

  • PyTorch

  • scikit-learn


  • 2G/3G/4G/LTE/5G



  • LoRaWAN

  • NB-IoT

  • AMQP

  • MQTT 

  • Wi-Fi

  • HTTP

  • HTTP WebSockets

  • Zigbee


  • Arduino 

  • FPGA controllers 

  • Google TPU 

  • Raspberry PI


  • 1-Wire 

  • ADC 

  • Analog 

  • RF433 

  • RFID


  • MySQL

  • PostgreSQL

  • MongoDB

Benefits and Challenges of Developing An IoT App


  • Improved Flexibility: Users can connect to any device from anywhere using IoT apps. One device can control multiple items or actions. For easier operation, every device may be linked, from TV volume to thermostat and light dimming.

  • Enhanced Productivity: IoT simplifies monitoring, processing, and controlling many operations while optimizing activities, increasing efficiency and productivity.

  • Gathering Rich Data: Data is a company's greatest asset. IoT models and approaches are already helping companies collect a lot of customer and product data. Organizations can evaluate this data to improve product quality and revenue.

  • Lower Operating Costs: IoT can reduce operating costs and boost revenues. IoT devices in industrial settings can track and monitor equipment. IoT data may also reduce downtime by gathering industrial data. IoT solutions may reduce power use. The entire cost of an industry can be slashed.


  • Security: IoT devices are vulnerable to be hacked. Developers adjust encryption, secure protocols, and control systems to prevent violations and unwanted access.

  • Scalability: IoT programs create a lot of data, which might be difficult to handle and process. The engineering team must manage flexible data storage and backups.

  • Interoperability: IoT uses various protocols and data types. Thus, developers must guarantee these gadgets connect easily with apps and other devices.

  • Reliability: Your Iot app development team must ensure the application can manage any load and faults while maintaining functioning.

  • Cost: It may be expensive, depending on the technology, software, and skills needed. Businesses should maintain a balance between app development costs and business benefits.

9-Step IoT App Development Tutorial 

Step 1. Define The Requirements of IoT App Development

Defining IoT app requirements is crucial to development . It entails determining the app's purpose, target audience, and features.

  • Establish why you're making the app: For home automation, industrial control, or healthcare monitoring? Understanding the app's goal can assist you choose its features. 

  • Determine who will use the software. If your user is mostly elders, for example, the interface should be simple. 

  • Decide features and functions users will get. The characteristics must be planned carefully. Besides, the hardware must be determined to ensure that the app can effectively communicate with the devices it controls.

  • Choose a communication protocol, such Wi-Fi or Bluetooth, to link the IoT app to the controlled hardware.

Step 2. Select An IoT App Development Platform

Your IoT app relies on the cloud platform for data gathering, processing, and analysis. These systems include device administration, data storage, and analytics, making IoT app creation and launch easier. 

The IoT platform you choose must match your app's requirements and goals. The framework you choose must also be compatible with your IoT devices' hardware and networking standards.

Choose the best platform to simplify IoT app development, cut expenses, and ensure app success. In order to choose a suitable IoT platform, some following factors should be considered:

  • Uptime;

  • Data security;

  • Debugging;

  • Feature stability;

  • Security;

  • Migration capabilities;

  • Connectivity;

  • Scalability.

Step 3. Choose The Right Hardware

The use case and specifications will determine the sensors, microcontrollers, and actuators needed for your IoT app. They must be platform and protocol compatible.

After identifying hardware components, find a trusted supplier. Find vendors with solid reputations, great customer service, and high-quality components.

The components should be tested before being included in your app. This will prevent compatibility troubles and unexpected behavior when integrating them with your IoT platform. 

Lastly, make sure the hardware is compatible with your IoT platform and communication protocols. This allows devices to interact and the app to work properly.

Step 4. Select The Network Protocol

The app and IoT devices communicate via the network protocol. When choosing a protocol, consider its range, bandwidth, power consumption, security, and interoperability.

For example:

  • If you use your gadgets at home or work, you can transmit data using WiFi. 

  • If your gadgets will be moving or remote, choose GSM.

  • Bluetooth can also be used by a smartwatch.

Choose the correct network protocol to make your IoT app low-power and maximally secure.

Step 5. Develop The IoT Software

Developing an IoT app software component involves particular processes to assure functionality and efficiency.

  • First, choose a programming language for IoT app development.

  • Next, create a data processing and analysis module to receive, filter, organize, and analyze IoT data. 

  • Later, design the user interface so users can interact with the app, visualize data, and operate IoT devices. Data and device security need encryption, authentication, and authorization.

The software must also be tested for IoT device and network protocol compatibility. After testing, deploy the software to a cloud platform or local server.

Step 6. Connect Hardware and Software

Developing an IoT app requires connecting all components to ensure software and hardware communication. The hardware devices collect data, and the software analyzes it to deliver insights and control IoT devices.

To achieve this:

  • Configure hardware devices with software and settings to communicate with software.

  • Communication protocols, such as Wi-Fi or Bluetooth should be integrated between hardware and software. Conduct device management, like remote firmware updates and device diagnostics to guarantee hardware components are working properly.

  • Make sure hardware and software can interact by testing their connectivity.

  • Monitor and warn hardware-software connections to detect and resolve arise issues.

Step 7. QA – IoT App Testing 

This step must be done throughout the IoT app development process as it also generates future updates and meets end-user needs. The skilled team will fix any issue at any time if anything isn't working.

  • The initial stage is establishing the testing scope, including features and functions. 

  • Next, create test cases for all app aspects, including functional and non-functional testing. 

  • After developing that, run them to find app flaws. 

  • Track and fix all testing issues before launching the app. 

  • To ensure app compatibility across platforms, test on many devices and operating systems. 

  • Finish with user acceptance testing to ensure the software satisfies user expectations.

>> Read more about software testing:

Step 8. IoT App Launching

You can release your app on your selected platform after testing and ensuring “everything is in order”. But a precise planning and execution plan is essential. Tips for launching your IoT app:

  • Determine launch strategy, including target audience, promotion channels, and KPIs to measure success. 

  • Improve the app store listing with intriguing descriptions, images, and videos of the app's features and operation.

  • Promote the app via social media, influencer marketing, and other methods to increase downloads. 

  • Monitor app performance and user comments to discover and resolve issues after launch. 

  • Examine data to evaluate app performance against KPIs and find optimization opportunities.

Step 9. Track and Manage Application

This final phase involves monitoring, maintaining, and optimizing the app's performance after launch. It entails watching app usage and performance metrics, assessing user input and behavior, updating and securing the app, and meeting user expectations. 

This keeps your app up-to-date, secure, and competitive, giving users a smooth and engaging experience and generating cash for developers. Work on these:

  • Track app interaction, crashes, and other user experience indicators.

  • Update the app with new features and bug fixes to keep it working.

  • Track user activity and analyze user input to understand user needs, discover areas for improvement, and find engagement and revenue opportunities.

  • Protect user data with security methods.

Read more about data security:

Current Popular Examples of IoT App Development

Google Home

IoT app Google Home controls, organizes, and manages connected compatible devices and others. They adjust the warmth, illumination, and noise level of the TV and speaker over Wi-Fi.

The dashboard on the home screen displays device info, shortcuts, and personal routines. The second screen shows action history. Every app or Assistant request, instruction, response, and change is visible there.

IoT app Google Home controls, organizes, and manages connected compatible devices and others. (Source: Internet)


Latch is a popular IoT app in the US. It handles apartment building smart locks on front doors, elevators, lobby entrances, terraces, and mailrooms.

Simply select the door you need from the list of areas you have access to and click unblock. The app opens the latch via Bluetooth. Users can share access with guests and view “unlocks” history.

Latch is a popular IoT app in the US. (Source: Internet)


SpotHero, an IoT parking app, maps parking lots and garages with prices and directions. You can book in the app with your license plate number. The scanner will read your plate, find the reservation, and open the gates upon arrival. 

Some app-listed lots feature sensors that identify when a car enters or leaves. Then you can check the activity history.

SpotHero, an IoT parking app, maps parking lots and garages with prices and directions. (Source: Internet)

How Much Does It Cost to Create An IoT App?

IoT app development cost depends on the amount of features included in the app solutions and the complexity of the development.

A basic IoT app has a few device connection options and basic data presentation functionality. The general development budget may start at $30,000.

APIs, GPS tracking, payments, and other smart device connections may create a complicated IoT program with many features. Integration may involve sync, third-party API, and security tools. Budget at least $50,000 for product development.

Simple IoT App

$30,000 – $50,000

Complex IoT App

$50,000 – $80,000


The IoT development industry is rising. The future is now. From flying cars without drivers to homes that respond you back to an intelligent assistant that knows everything before you think about it, things from sci-fi movies are becoming true and more.

If you've considered making an IoT app, now is the moment. Choosing a dedicated partner for your IoT app development journey is a considerable recommendation.

Relia Software’s IoT app developers and other software professionals deliver unparalleled expertise to your project. We can produce what you need whether you have a detailed plan or a vague idea. Our team can help you launch a standalone IoT solution or one that works with many platforms. Contact us!

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