When entrepreneurs decide to get their own commercial app, they ask themselves, "How long does app development take?" And it’s not without reason, as the development length directly affects the app’s price and determines whether it is worth developing at all. After all, development is a long process, and by the time it is completed, the app may already not be relevant. Therefore, it is crucial to understand how much time development will take and how to estimate a rough timeline.
To give you a clear understanding of the time required for custom mobile app development and answer the question of how long app development takes, our team has created a guide that covers various factors affecting the timeline of app creation, including some of the latest tech trends, especially in the AI field.
Factors affecting how long it takes to develop an app
Creating an app from scratch consists of several crucial steps: the discovery phase, interface design, coding, architecture build-up, testing, and release. The smooth collaboration and efficiency of several specialists during these stages significantly impact the speed of app development. We have gathered the key components that influence the app development timeline.
App complexity
The complexity of an app is an important point that can greatly influence the app development timeline since a more complex app typically takes more time and resources to develop compared to a simpler one.
The complexity of the app depends on the number of roles and the number of features that need to be implemented during the project work. For example, an e-commerce app with features like product listings, shopping cart, payment integration, and user reviews will take longer to develop than a simple note-taking app.
The duration of app development also depends on the approach chosen by the development team and the client, ultimately determining how long the app development takes. Entrepreneurs can opt to develop a Minimum Viable Product (MVP) or a fully-fledged product from the start. Developing an MVP allows for a faster time-to-market as it focuses on essential functionalities. On the other hand, developing a fully-fledged product from the start may take longer, but it provides a more comprehensive user experience right from the beginning.
Platforms and different screen sizes
The number of platforms and devices on which an app needs to be developed and supported can impact how long app development takes. Each platform like iOS, Android, and the web has its own set of guidelines, coding languages, and frameworks, requiring IT engineers to adapt the digital product to meet these requirements. As a result, extra time needs to be allocated to make sure the app functions seamlessly on each platform.
Also, you might need to adjust the app so it works well on different devices, like smartphones, tablets, and smartwatches. These devices have different screen sizes, resolutions, and speeds, so the app may need changes for each one. This makes the development process take longer because you have to make sure the app looks and works the same on all of them.
Planning
Although it might not be obvious at first, the thorough planning of the project flow process deeply affects how long app development takes. According to research published on the MDPI, SMEs that align IT strategies with business objectives achieve better operational efficiency, lower operational costs (up to 20% reduction), and higher customer satisfaction (up to 15% increase). That's why, to understand all the pitfalls that may occur before the beginning of the project, the project team and their customer need to invest time in planning.
Effective planning involves defining a clear scope of work and researching the project requirements before the development starts. By investing time in upfront planning, the team can spend less time remaking design mockups and bits of code because of the unclear tasks and overall scope. Thorough planning saves time. According to Clutch, the stage of idea formulation and research typically takes 2–3 weeks.
UI/UX design
According to Clutch, normally it takes 2–4 weeks to design a mobile interface unless the application is too complex. The time spent on design can increase if, in addition to interface design, the client decides to order custom illustrations or a logo and incorporate it into the app design. Although this will definitely improve brand recognition, it will also increase the time spent on design, ultimately influencing how long the app development takes.
What speeds up the design process is having established standards within the team. Setting clear standards and using a design checklist for the whole team — like organizing files the same way and using Figma components and auto-layouts — makes it easier for developers to work with designs and improves interface quality. We speed up the process and keep quality high by reviewing each other's work, practicing together every week, and sharing new trends and tips. Having a library of typical user flows for common app features also helps us work faster for clients, without losing creativity or good user experience.
“We've set up a system where our designers stay in close contact with frontend developers, review layouts as they're implemented, and suggest improvements in real time. This collaboration, together with our strict internal design standards and peer review process, really accelerates the workflow and helps us deliver a higher-quality product.”
Development
Building app architecture and coding usually parallels design and takes 3–6 months, as said by Clutch. It can also take longer if the digital product is big. The more complex the features, the longer it takes to build the app. If the app needs special algorithms, connects to other systems, or has complicated user actions, it will take extra time to develop and test these parts.
For instance, let's imagine an app that requires an intricate algorithm for analyzing and recommending personalized workout plans based on user data such as fitness levels, goals, and health conditions. Developing and fine-tuning such a complex algorithm would require additional time and expertise to provide its accuracy and effectiveness.
To make an answer to the question of how long app development takes clearer, let's have a look at the table provided by Goodfirms that reflects what user features can be considered to be simple, complex, and advanced in terms of development. The table also provides an estimate of the approximate time needed to develop these features.
| Level of complexity | List of features | Development timeline |
|---|---|---|
| Simple |
| 3-6 months |
| Average |
| 6–9 months |
| Complex |
| 9–12 months |
| Enterprise |
| 12–18+ months |
The expertise of the IT agency or a freelancer you hire also plays a crucial role. A knowledgeable and experienced team can work more efficiently and may release the product faster than a less experienced team.
Security and compliance
Integrating strong security and compliance measures early in app development — beginning with the discovery phase and system architecture — can slightly lengthen initial timelines. However, this up-front investment prevents costly redesigns, audit failures, and security incidents down the road. For most industries, ensuring compliance from day one leads to fewer risks and smoother scaling.
Key standards such as SOC 2, ISO 27001, HIPAA, GDPR, and PIPEDA are often required depending on your target market and industry, particularly in finance, healthcare, and regions with strict data privacy regulations.
A modern approach, known as compliance engineering, is gaining traction among leading development teams, including Ronas IT. This methodology involves designing system architecture and workflows according to security and privacy regulations from the outset — not patching them in later. By embedding compliance into development processes and documentation, teams reduce the risk of future regulatory setbacks and optimize long-term project timelines.
Practical measures that speed up future release cycles and boost reliability include:
- Role-based access control (RBAC): Limits user permissions to minimize accidental data leaks or misuse (for example, used in Ronas IT education and fintech projects).
- End-to-end encryption: Ensures sensitive data remains protected from client to server.
- Log auditing: Enables continuous monitoring, making it easier to track issues and fulfill audit requirements.
- Secure CI/CD pipelines: Automating vulnerability scanning and compliance checks within your deployment process (as highlighted in Ronas IT's PCI DSS-compliant projects) means faster, safer releases.
While integrating these measures may add days or weeks to early phases, they drastically reduce the time and expense spent on urgent fixes, compliance audits, and incident response later on. Within our team, use of compliance engineering, robust access control, secure deployment practices, and audit-friendly infrastructure demonstrates how strategic investment in security and compliance leads to faster, more reliable app delivery in the long run.
Testing and debugging
When an app is almost ready for release, rigorous testing is necessary to identify and fix any bugs or usability issues. It's worth investing time and resources at this stage, as it helps to make sure that app users will have a good user experience and use services without any friction. This phase is crucial for releasing a high-quality app. The stage of testing and finalizing usually takes about 3–6 weeks according to Clutch.
“At Ronas IT, we don't have a dedicated QA role and avoid manual testing — we focus on automated testing, especially for the backend, as it handles critical business logic. Frontend and mobile tests are added later when the design and functionality stabilize, since frequent changes make early automation inefficient. This approach helps us keep development fast and reliable without sacrificing quality.”
App Store review
Once the app has undergone comprehensive testing and any necessary fixes have been implemented, it is ready for deployment. This involves uploading the app to the respective app stores and making it available for users to download. The time required for this stage varies based on the app store’s review process, which can take anywhere from a few days to a couple of weeks.
Post-launch updates and maintenance
App development is an ongoing process, and it’s essential to provide regular updates to improve functionality, fix any issues, and introduce new features. The time needed for these updates and maintenance depends on the frequency and complexity of the changes and can range from a few days to a few weeks.
How long does app development take: Exploring the timeline for 3 different types of apps
As we mentioned earlier, we can develop various types of applications: separate native applications for iOS and Android, cross-platform applications that can run on both of these platforms, as well as web applications that users access through a browser. Let’s discuss how long it will take to develop each of these types.
Native apps
Native apps are known for providing users with a particularly smooth user experience. However, developing such apps can have its challenges. If you decide to build separate apps for iOS and Android, you will need to hire two teams — an iOS dev team and a separate Android dev team. Working with two teams will be necessary at all stages of development, from writing code to maintenance, which will double the cost and hustle.
Popular native apps include Spotify, WhatsApp, Tesla, and others. On average, creating a native iOS app and a native Android app takes around 4 to 6 months or more if the digital product includes unique algorithms and features or if the team does not follow the MVP approach.
Four months for two native apps seems a realistic estimate for us. To answer the question of how long app development takes in the case of native apps, let's take a brief look at our Noah farmer marketplace. Its ecosystem consists of native iOS and Android apps as well as a web admin panel. Our team has managed to develop this entire ecosystem within 4 months. Here are some short statistics about this project.
Cross-platform apps
Cross-platform apps may have slightly slower performance compared to native apps, but this difference is often unnoticeable to users, as it has little impact on the overall user experience. Additionally, cross-platform development usually involves fewer challenges. These apps can be developed and maintained by a single team. Various technologies, such as React Native, Flutter, or Xamarin, are available for building such applications.
Popular cross-platform apps include Facebook, Instagram, Pinterest, Airbnb, Skype, Uber Eats, and many others. Typically the development time for cross-platform apps is around 3 to 6 months or more, depending on the complexity of the functionality. It is believed that developing with frameworks like React Native can save 30–40% more resources compared to native development.
Three to four months for a cross-platform on React Native also seems a realistic estimate for us since our team managed to develop several mobile apps within this period. One of them is a Lainappi rental app that was created in the form of a marketplace, where users can take and give items they own for rent. Here's a brief overview of the Lainappi project to give you an understanding of what is the scope of work and how long app development takes in the case of cross-platform apps.
Web apps
Web applications offer several advantages, including their ability to be accessed through a web browser on any device with an internet connection. This eliminates the need for users to download and install dedicated apps, making web apps highly accessible. Web development teams specialize in creating these applications using web technologies such as JavaScript, HTML, or CSS for the front end, as well as Django, Laravel (PHP), MySQL, Azure, and many other technologies for engineering the backend of the app.
“We've been working with PHP since 2007, which means our web team has extensive experience with both speed and quality requirements. For landing pages that require advanced frontend features or animations, we typically use Next.js in combination with GSAP. Our development process relies on consistent coding standards, automated code review tools, and a set of proven in-house solutions that streamline web projects. By managing the full cycle from design through deployment, we're able to efficiently adapt to new challenges and deliver reliable results at scale.”
Popular web applications include Google Docs, Trello, Slack, GitHub, and Netflix. Some sources say the average timeline for web app development is 4 to 6 months. This estimate for web app development can also be influenced by points like integrating APIs, ensuring responsive design for various screen sizes, and implementing robust security measures.
From our experience, the timeline of how long app development takes, particularly for web apps, is accurate around 4 to 5 months. Once we have managed to develop an Oddscrowd betting app within 14 weeks or 4.5 months. Our client contacted us 5 months before the Super Bowl, and we needed to fit into this tight timeline. Here are the features that we managed to implement during this period:
Current software development trends that affect how long app development takes
In recent years, there have been several prevailing trends in the IT field that affect the quality and speed of development. Let’s take a look at a couple of key trends.
Trend 1: Adoption of artificial intelligence
According to the results from Google's DORA report approximately 90% of workers in the technology industry use AI in their work. This has affected how long app development takes.
Developers working on application development can use generative AI technologies for code generation (71%), as well as for accelerated testing (62%) and bug detection (59%). They can make an AI request, and AI provides them with sections of code that can be edited and adapted to the application's needs. This allows IT engineers to reduce manual work and quickly identify flaws in the code, which speeds up the development process during the coding and testing stages.
AI doesn't just help with coding. Here are some other ways artificial intelligence is being used today:
AI for prototyping and design
AI-powered tools can quickly generate initial UI/UX layouts, explore multiple design options, and create interactive prototypes. This accelerates the design phase by helping teams visualize ideas faster, iterate on concepts, and reach a validated prototype in less time.
AI-driven testing and debugging
AI can automatically generate test cases, identify vulnerabilities, and detect bugs much faster than traditional methods. By analyzing code and user flows, AI finds weak points and errors early on, reducing the time needed for testing and debugging. This leads to higher-quality apps and a shorter overall development cycle.
AI in project management
AI systems help project managers predict timelines more accurately, spot risks of delays, and optimize team workloads. Machine learning models can analyze past projects and current progress to suggest resource allocation improvements, raising the predictability of project delivery and minimizing bottlenecks.
No-code or low-code platforms powered by AI
AI plays an increasing role in no-code and low-code development platforms, making it even easier and faster to build MVPs, internal tools, or simple apps. By automating code generation and suggesting workflows, AI allows teams without extensive programming experience to deliver functional solutions quickly.
Trend 2: Cloud computing
The total spending on cloud services by organizations is increasing every year. Although the growth of the cloud services industry has slowed down in the past couple of years, their usage is still steadily growing. Here's the Statista’s survey that proves this.
So how does this factor affect the duration of app development? First, let’s clarify that the use of these technologies is specifically relevant to the development of web applications. Leveraging cloud platforms, such as Amazon Web Services (AWS), Google Cloud Infrastructure or Microsoft Azure, provides infrastructure scalability and flexibility. Developers can quickly provision resources, optimize app performance, and reduce development time with the help of these cloud computing solutions.
At Ronas IT, development teams have also standardized the launch and operation of IT infrastructure with the help of cloud computing services. Now, development environments automatically launch within 5–7 minutes after saving the initial piece of application code. Therefore, engineers no longer need to manually configure all of this but can focus on writing code instead. This saves their time and, consequently, affects how long app development takes.
Trend 3: Outsourcing app development due to Generative AI skills gap
The World Economic Forum's Future of Jobs Report 2025 highlights that skills gaps — particularly in emerging technologies like generative AI — are now the top barrier to business transformation and rapid development, with 63% of global employers identifying this as their main challenge over the 2025–2030 period. While the demand for AI and data-related skills is accelerating, most companies struggle to either recruit or rapidly upskill workers in these areas. Although upskilling efforts are widespread, employer surveys show only half of the current workforce globally has completed any form of training, and many roles — especially those requiring advanced AI competences — remain difficult to fill.
As a direct result, more businesses are now outsourcing app development and similar technology projects to specialist third-party providers. This approach allows companies to bypass the lengthy and increasingly difficult process of hiring or training staff in generative AI, and instead tap into external teams with up-to-date AI expertise.
Trend 4: Microservice architecture
Microservices architecture is a modern software design approach where applications are built as a collection of small, independent services, each responsible for a distinct business function. These services are loosely coupled, allowing them to be developed, deployed, and scaled independently. This modular design has transformed how companies build, manage, and scale applications — especially as digital transformation and cloud adoption accelerate worldwide.
Market growth and drivers
According to Research and Markets, the global microservices architecture market is experiencing exceptional growth, projected to expand from $7.4 billion in 2025 to $8.94 billion in 2026 at a compound annual growth rate (CAGR) of 20.9%. By 2030, the market is expected to reach $18.72 billion, maintaining a robust CAGR of 20.3%. This growth is driven by:
- Enterprise digital transformation initiatives
- Widespread adoption of cloud platforms
- Demand for scalable, resilient, and fault-tolerant application systems
- Rapid growth in fintech, ecommerce, and edge computing sectors
- Increasing need for faster time-to-market and service agility
This modular approach makes it easier to maintain and update the application. Each service operates independently, allowing developers to focus on a single service without affecting others. This isolation simplifies maintenance tasks, reduces the risk of unintended consequences, and makes troubleshooting and debugging more manageable, which results in less hustle and quicker time to market.
Trend 5: Cross-platform development
The cross-platform approach is a prominent software development trend, with a significant number of developers embracing it.
By using cross-platform development, developers can save time and effort in writing separate codebases. Such a streamlined approach eliminates the need to develop and maintain multiple versions of the app. Instead, developers can focus on building features, enhancing functionality, and addressing bugs and issues. The ability to efficiently share code across platforms not only accelerates the speed of development but also ensures consistency in the user experience across different devices and operating systems.
Other useful materials that would help you estimate the timeline and cost of the app development
Our team has already created several articles and materials on app development pricing and timeline estimation methods. We have collected a couple of them here so that you can continue studying the topic of app development cost and delving into the factors that affect how long app development takes.
"What affects React Native app cost at each stage of development?" — In this article, we explain what factors contribute to the cost and development time of a React Native app.
"How to develop a music app?" — Here, we discuss the stages involved in developing a music app and provide a detailed estimation of the costs and hours required for development.
"How to estimate the development of a website or an app" — In this article, we explain our approach to the process of project estimation.
Urgent MVP development — We also offer an urgent MVP development service. On the service page, we describe what we do if you need to develop an app in the shortest possible time.
Wrapping up
In conclusion, we’d like to note that how long app development takes largely depends on the team handling the project. Therefore, the best way to save development time is to turn to an experienced development team with a wealth of experience, streamlined processes, and strong project management. And you can find them on services like Goodfirms and Clutch.
Also, if you decide to develop a mobile application, it is better to choose cross-platform development, as it will save not only time but also money. We also advise adhering to the MVP approach so that you can quickly test your business hypothesis and rapidly test your application on real users spending minimum time.
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