How to build a Mobile Banking App: A Comprehensive Guide in 2023

The mobile banking landscape is experiencing explosive growth, driven by the widespread adoption of smartphones and the increasing demand for convenient and secure financial services. As financial institutions seek to cater to this evolving customer behaviour, building a robust and user-friendly mobile banking app has become a crucial business strategy. Moreover, consumers become increasingly tech-savvy and demand more personalised and convenient financial experiences, that’s why mobile banking apps need to be developed in a more diverse and personalised way.

If you’re considering building your own mobile banking app, this article provides a comprehensive guide to navigate the process. We’ll explore the current market landscape, outline the key steps involved in development, explore the essential features your app should include, analyse the tech stack options, and estimate the cost and time required. Whether you’re a financial institution looking to enhance customer experience or a fintech startup seeking to disrupt the market, this guide will equip you with the knowledge and resources necessary to build a successful mobile banking app.

how to build a mobile banking app

1. What is a Mobile Banking App?

1.1. Definition

Mobile banking, also known as m-banking or mobile financial services (MFS), is an electronic banking service that allows customers to access and manage their bank accounts from a mobile device, such as a smartphone or tablet. 

Nowadays, the mobile banking services typically offers a variety of services, such as:

  • Money transfer service
  • Online saving account opening/ closing service
  • Bill payment service (electricity and utility bills, phone charges….)
  • Account information querying service: checking account balances and transactions history, notifications of account balance fluctuates, receiving bank information (interest rates, exchange rates, transactions points, ATMs…)
  • Online services buying (airline tickets, insurance…)
  • E-wallet service

1.2. Benefits of Mobile Banking App

  • Accessibility: Mobile banking is accessible from anywhere with an internet connection, eliminating the need to visit a physical bank branch. This makes it convenient for people on the go or living in areas with limited branch access.
  • Speed: Mobile banking transactions are typically completed faster than in-branch transactions. This is because there is no need to wait in line or deal with paperwork.
  • Ease of use: Mobile banking apps are typically user-friendly and intuitive, making it easy for people to learn how to use them. This allows people to perform a variety of banking tasks, such as checking account balances, transferring funds, and paying bills, from the convenience of their smartphones or tablets.
  • Cost-effectiveness: Mobile banking is often free or less expensive than in-branch banking. This is because there are no fees associated with using mobile banking apps, and banks may offer discounts or waive fees for certain mobile banking transactions.
  • Security: Mobile banking apps use advanced security measures to protect user information and transactions. This includes multi-factor authentication, encryption, and fraud detection.

2. Current Mobile Banking Market

The mobile banking market is booming, with a global market size of 1.3 billion USD in 2023 and is expected to reach 3.47 billion USD by 2030, exhibiting a compound annual growth rate (CAGR) of 15.06% during the forecast period, according to Market Research Future (MRFR). This growth is being driven by several factors, including the increasing penetration of smartphones, the rising adoption of mobile payment solutions, and the growing need for personalised and seamless banking experiences. 

According to a recent study by Statista, there were about 2.7 billion mobile banking users worldwide in 2023, and this number is expected to reach 4.4 billion by 2027. This growth can be explained by the increasing popularity of mobile banking in developing countries, where smartphone penetration is high and access to traditional banking services is limited.

Moreover, contactless payments are becoming increasingly popular, as they are a more convenient and secure way to make payments. The increasing adoption of contactless payments is driving the demand for mobile banking services. Mobile banking is also becoming increasingly sophisticated, with banks offering a wide range of features and services, such as account management, bill payments, money transfers, investments, and loans. Some banks are even offering virtual reality (VR) and augmented reality (AR) experiences to help customers better understand their finances.  

As mobile banking continues to evolve, it is clear that it will play an increasingly important role in the lives of consumers. Banks that are able to innovate and provide a seamless and personalised mobile banking experience will be well-positioned for success in the years to come. 

3. How to create a Mobile Banking App

Developing a successful mobile banking app requires careful planning, execution and collaboration across various teams. Here’s a 

3.1. Define goals and requirements

  • Identify target audience: Understand the demographics, needs, and preferences of your target users.
  • Set clear goals: Define what you want the app to achieve in terms of user engagement, transaction volume, and overall business objectives.
  • Outline app features and functionalities: Determine the essential features required at launch and prioritise them based on user needs and impact.

3.2. Market research and Competitor Analysis

  • Analyse existing mobile banking apps: Assess the strengths and weaknesses of competitor apps to identify market trends and differentiate your offering.
  • Conduct user research: Understand user pain points, expectations, and preferred functionalities through surveys, focus groups, and user testing.
  • Stay up-to-date with regulatory requirements: Ensure compliance with relevant banking regulations and data privacy laws.

3.3. Design and Prototype

  • Develop user interface (UI) and user experience (UX) designs: Create an intuitive interface that is easy to navigate and meets user expectations.
  • Build a prototype: Develop a functional prototype to test and refine the app’s features and usability.
  • Gather user feedback: Conduct usability testing with a diverse group of users to identify areas for improvement and iterate on the design.

3.4. Development and Testing

  • Select a development team: Choose a qualified development team with experience in mobile app development and financial technology.
  • Develop the app: Use secure and industry-standard development practices to ensure app stability, performance, and security.
  • Conduct thorough testing: Perform rigorous testing for functionality, usability, security vulnerabilities, and compatibility across different devices and operating systems.

3.5. Security and Compliance

  • Implement robust security measures: Employ multi-factor authentication, data encryption, and secure coding practices to protect user data and financial information.
  • Comply with regulatory requirements: Ensure adherence to all relevant financial regulations and data privacy laws.
  • Conduct regular security audits and penetration testing: Proactively identify and address security vulnerabilities to maintain a secure environment.

3.6. Launch

  • Develop a launch strategy: Plan for app launch, including marketing campaigns, press releases, and user onboarding initiatives.
  • Submit the app to relevant app stores: Follow app store guidelines and requirements for submission and approval.

3.7. Monitoring and Improvement

  • Track app usage and performance: Analyse user engagement metrics, transaction volumes, and crash reports to identify areas for improvement.
  • Gather user feedback: Continuously collect user feedback through surveys, app reviews, and support channels to address user needs and improve the app experience.
  • Release regular updates: Implement new features, fix bugs, and improve performance based on user feedback and performance data.

4. Key features of a Mobile Banking App

A comprehensive mobile banking app should offer a range of features that cater to users’ diverse financial needs and provide a seamless banking experience anytime, anywhere. Here are some key features that should be included in a mobile banking app:

Account Management 

  • Access account balances and transaction history
  • Transfer funds between accounts
  • Pay bills and set up recurring payments
  • Manage direct deposits and withdrawals
  • Receive account alerts and notifications
  • View and manage account statements

Financial Tools and Services

  • Budgeting and expense tracking tools
  • Personal finance management tools
  • Financial goal-setting and tracking capabilities
  • Investment and retirement planning tools
  • Access to financial education resources
  • Integration with financial planning software

Mobile Payment and Transaction Services

  • Send and receive money using P2P (person-to-person) payments
  • Make mobile payments at physical stores and online merchants
  • Scan and pay QR codes for contactless payments
  • Use mobile wallets for convenient transactions
  • Manage mobile payment cards

Security and Fraud Protection

  • Multi-factor authentication for secure login
  • Real-time transaction monitoring and fraud alerts
  • Secure data encryption and transmission
  • Device fingerprinting and location tracking for fraud prevention

Personalised User Experience

  • Customisable dashboard and personalised recommendations
  • Tailored financial insights and advice based on spending habits and goals
  • Proactive financial reminders and alerts
  • Convenient access to customer support and FAQs
  • User-friendly interface and easy navigation

5. Tech stack

  • Front-end Development: React Native, Flutter, Swift, Kotlin
  • Back-end Development: Java, Python, Node.js
  • Database: MySQL, NoSQL databases (MongoDB, Cassandra), cloud database (AWS DynamoDB, Google Cloud Firestore)
  • Security: MFA (multi-factor authentication), data encryption (AES, RSA), secure coding practices
  • APIs: Banking APIs, Third-party APIs
  • UI libraries and framework: SwiftUI, Jetpack Compose, Material Design
  • Cloud platform: AWS, Azure, Google Cloud
  • SMS, Phone Verification, Voice: Twilio, Nexmo
  • Email management: Mandrill
  • Push notifications: Twilio,

6. How much does it cost and how long does it take?

The cost and time required to develop a mobile banking app vary significantly depending on several factors, including:

App Features and Complexity

  • Basic apps with core functionalities (account management, bill payments, transfers): Cost between $30,000 and $70,000 and take 3 to 6 months to develop.
  • Moderately complex apps with advanced features (P2P payments, investment management, budgeting tools): Cost between $70,000 and $150,000 and take 6 to 9 months to develop.
  • Highly complex apps with innovative features (biometric authentication, AI-powered insights, chatbot support): Cost between $150,000 and $300,000 or more and take 9+ months to develop.

Development Team Composition and Location

  • In-house development: Requires hiring and managing a team of developers, designers, and project managers, potentially incurring higher costs.
  • Outsourcing to agencies: Offers cost-efficiency but requires careful selection and communication with the development team.
  • Freelance developers: Can be a cheaper option but may lack domain expertise and experience in banking apps.
  • Development team location: Costs can vary depending on the location of developers, with higher costs in developed countries like the US and Europe. It can be seen that choosing a dedicated team from South Asia would help you reduce a lot in building your telemedicine app.

Source: GoodFirm

Technology Stack and Infrastructure:

  • Choosing modern and popular tech stacks: May require higher initial investment but offer easier maintenance and scalability.
  • Utilising cloud services: Provides flexibility and scalability but adds ongoing subscription costs.
  • Investing in security measures: Crucial for protecting user data and financial information, increasing development costs.

Overall, it is estimated cost and time for each complexity level:

  • Basic mobile banking app: $30,000-$70,000 | 3-6 months
  • Moderately complex app: $70,000-$150,000 | 6-9 months
  • Highly complex app: $150,000-$300,000+ | 9+ months

It’s important to note that these are estimations, and the final cost and time can significantly vary based on your specific needs and project scope. Consulting with experienced mobile app development companies and obtaining quotes tailored to your requirements is crucial for budgeting and planning your mobile banking app development project.


To conclude, building a successful mobile banking app requires careful planning, execution, and a commitment to user-centric design. By following the steps outlined in this article, choosing the appropriate tech stack, and prioritising security and compliance, you can create an app that empowers users, enhances financial inclusion, and drives business growth. Remember, the mobile banking landscape is constantly evolving, so it’s crucial to be agile and adaptable to stay ahead of the curve. By embracing innovation and continuously delivering a user-friendly and secure experience, your mobile banking app can become an essential tool for users to manage their finances and achieve financial success.

If you want to choose a reliable technology partner to help you in your mobile banking app, contact us to start together today! AgileTech is an experienced technology outsourcing company that has intense experience in this market, so we can help you with maintaining and testing mobile products. For further discussion and free consulting time, please contact us at [email protected] or fill in the registration form for a 30-minute meeting with our IT experts.

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