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Stages of Application Development | Step-by-Step Guide

James Sullivan
James Sullivan
December 13, 2023
Exploring Stages of Application Development: A Guide


The application development process is structured into various stages, each playing a critical role in transforming an idea into a fully functional and market-ready product. Understanding the stages of developing an app is beneficial and essential for anyone looking to hire a software development team, embark on a software project, or manage a technical product.

This is where OneSeven Tech, with its profound expertise in mobile application development, becomes a valuable partner. Known for our comprehensive approach, we ensure that every phase of the app development life cycle is handled with precision and tailored to meet the unique needs of our clients.

In this article, we will explore the stages of application development. From initial ideation to final deployment, we will explore each step that contributes to developing successful mobile apps.

Stages of Mobile App Development

1. Project Initiation

The mobile application development journey begins with the project Initiation stage, a critical first step that sets the foundation for a successful app. This initial phase is where the vision for the app becomes a concrete plan. This stage becomes active as soon as a client approaches a development company.

During project initiation, it's essential to define the goals and objectives of the mobile app clearly. This involves understanding the target audience, identifying the problem the app aims to solve, and determining the unique value proposition it will offer. In this stage, brainstorming sessions and market research play a key role in shaping the concept.

Key activities in this phase include stakeholder meetings, where expectations and requirements are gathered, and the project's feasibility is assessed. It's where the roadmap for the app development life cycle is laid out, including timelines, resource allocation, and budget considerations.

Project initiation is about planning and building a vision. It's where ideas are nurtured, strategies are formulated, and the groundwork for the subsequent stages of application development is established.

2. Requirements Analysis

The requirements analysis stage in the app development life cycle is a process where understanding and aligning with the end users' needs is paramount. This stage is pivotal as it ensures that the final product meets and exceeds users' expectations.

In this phase, requirements are categorized from high-level to detailed. This categorization includes business requirements, which outline the broader objectives and goals of the project, and user requirements, which focus on the needs and expectations of the end users. The most critical of these are the system requirements. They detail the functionalities of the system, its performance capabilities, and how well it aligns with the user goals and perspectives.

A comprehensive analysis of these requirements sets the stage for accurate project estimation. This includes determining the project timeline, cost analysis, the number of skilled professionals needed, and the resources required. Each of these factors plays a crucial role in shaping the project's trajectory, ensuring that the development process is efficient, cost-effective, and aligned with the project's objectives.

By thoroughly analyzing and understanding these requirements, the development team can create a realistic, achievable, and tailored roadmap to deliver a product that resonates with its intended audience.

3. Focus on Planning

In the mobile app development process, the planning stage plays a role in mitigating risks that both customers and development teams commonly fear. These risks include missed deadlines, feature omissions, the need for rebuilds, excessive overwork, frequent requirement changes, and an uncontrollable budget. Effective planning and estimating can address and eliminate these concerns.

This phase is about incremental estimation and planning, providing the team with flexibility. This flexibility is important because it's often impossible to predict the exact release date of a product at the outset.

A project plan serves several critical functions. It's where the team evaluates features, resources, and schedules to answer the crucial question, "What should we build?" Effective planning stages always go with the following:

  • Reducing risks
  • Avoiding uncertainty
  • Enhancing decision-making
  • Establishing trust
  • Conveying information

During this stage, the team also estimates costs and benefits. Decisions like hiring an additional software engineer to include certain features in the release or delaying the release for a better product are made here. Planning also involves being adaptable to change requests that may shift release dates.

It's about finding optimal solutions in the present without being fixated on a plan as being 100% perfect. The emphasis should be on planning activities and tasks rather than planning features.

This stage also helps in identifying any overlooked activities. Once everything is planned and estimated, creating a first sketch of the future app is crucial to get a tangible feel for the project. This step is important in transitioning from abstract planning to concrete development.

4. Prototyping and Design

Prototyping is an important step in mobile application development, serving as the gateway to visualizing and shaping the app's design. This phase is where the initial design sketches of the app are drawn, setting a mutual understanding and vision between the development team and the client regarding how the app will look and feel and outlining potential iterations.

The role of UI/UX designers becomes prominent in this stage. They are responsible for crafting the app's design, focusing on creating seamless transitions, engaging animations, and appealing styles. Their goal is to ensure that the app is aesthetically pleasing and user-friendly, with smooth navigation and an intuitive interface.

Once the UI/UX designers have developed a robust prototype and mapped out the user flow, the project moves into a crucial phase. This is where the conceptual design transitions into tangible reality, with the user interface elements being handed over for coding.

The prototyping and design phase is important as it bridges the gap between conceptual ideas and the functional product, ensuring that the app’s design aligns perfectly with user expectations and project objectives.

5. Development

The development stage in app development is a comprehensive process that extends beyond just coding. A paramount concern for every client is the timely completion of their app. To manage this effectively, most software development teams utilize a backlog – a comprehensive repository of tasks. It is crucial to clearly understand the volume of work and the time required for development.

Before diving into the coding phase, task prioritization and estimation are vital steps. The team identifies and prioritizes the most critical tasks, moving them into the estimation stage. This estimation process helps the team define the time required to complete each task, focusing solely on coding and not including time spent on meetings, discussions, or other non-coding activities.

The development itself uses the technology stack determined at the project's onset. Software engineers collaborate closely with UI/UX designers and quality assurance engineers to ensure a cohesive and efficient workflow.

Regular meetings between the team, project manager, and client are essential for maintaining transparency and alignment. These daily or weekly meetings depend on the cooperation models and approaches the company offers.

A key element in the development phase is adherence to acceptance criteria (AC). AC are specific requirements that the product must meet, agreed upon before development begins. Prepared by the Requirements Manager or QA, they include detailed feature explanations and may also encompass design mock-ups.

For example, an AC might be: “As a System Admin, I can go to the Clients list and click on the Import button so that I can upload clients to organizations selected from a drop-down list.”

QA engineers write these criteria, providing a detailed and technical explanation of each feature. Acceptance criteria eventually evolve into user stories. Product owners are crucial in task prioritization, AC approval, and evaluating the completed work.

This structured approach ensures that development aligns precisely with the project requirements and user expectations, paving the way for a successful and functional application.

6. Development and Testing with Scrum

In the Agile methodology, Scrum stands out as a prominent framework. It segments the agile app development stages into iterations known as sprints, typically spanning one, two, or three weeks. Scrum is designed to prevent the pitfalls of scattered work that extends over months without yielding necessary results. It is particularly suited for projects with fluid requirements that demand high flexibility, rapid updates, and quick responses to changes from the development team.

Working with Scrum teams involves active participation in regular meetings. These include planning sessions for each iteration cycle, daily status updates, and sprint reviews, ensuring constant communication and alignment on project goals.

The project's success hinges on the team's competence, as well as effective prioritization, managing expectations, and timely releases. The struggles of inadequacies in project management, such as intuitively chosen tasks for prioritization and never-ending iterations, are significantly reduced. Software engineers, designers, and testers frequently utilize tools like Jira (or similar software) to track their sprints and manage their backlog.

Tasks within Jira are typically organized into categories like:

  • To do
  • In progress
  • Ready to deploy
  • Ready to test
  • Done

The QA engineer moves tasks to the 'Done' or 'In Progress' status. Deployment of the developed code, initially written by engineers, occurs first in the QA environment. This environment is a testing ground for the app.

QA engineers rigorously test the developed functionality. If needed, software engineers refine the product to achieve perfection and ensure that the feature operates flawlessly according to the acceptance criteria and is free of bugs. This iterative process of development and testing within the Scrum framework provides high quality and responsiveness to evolving project requirements.

7. Deployment and Maintenance

The Deployment and Maintenance phase marks a significant application development life cycle milestone. Once software testing is complete and the code is verified to be clear of any bugs, the application is ready for its final release. This is the stage where the app becomes accessible to customers in a live environment.

The software development team plays a crucial role in overseeing the deployment process, ensuring it is executed smoothly and without issues. Once the system is deployed, the focus shifts to ongoing maintenance.

This maintenance is important for the continued success and relevance of the app and includes:

  • Bug Fixing: Promptly addressing and resolving any issues that arise post-deployment to ensure a seamless user experience.
  • Code Refining: Continuously improving the code for better performance and efficiency.
  • Enhancements: Implementing updates and new features to keep the app relevant and engaging for users.

Phases of app development are not just sequential steps; they are integral milestones that contribute to the successful implementation of a project.

One of the most effective methodologies in this context is Agile. Agile focuses on executing activities, meeting client needs and requirements, and maintaining team flexibility. It shifts the emphasis away from excessive reporting, paperwork, and constant planning that does not yield tangible results towards a more dynamic and result-oriented approach. This ensures that the app meets and exceeds the expectations of both the client and the end-users.


The stages of application development are detailed, each phase building upon the last to create a comprehensive and successful app. From the initial ideation in Project Initiation to the critical step of deployment and maintenance, every stage is essential. It's a journey that requires expertise, precision, and a deep understanding of both technology and user needs.

OneSeven Tech stands out as a digital product studio with extensive experience navigating these stages. Our commitment to quality, combined with our agile approach, ensures that we not only meet but exceed the expectations of our clients.

Remember that the right partner can make all the difference for those considering embarking on an app development journey. Whether you are a product manager, CTO, or someone looking to develop a software application, consider OneSeven Tech for your mobile app development needs. Our expertise, combined with a client-centric approach, ensures that your vision is transformed into a digital reality that resonates with your target audience.

Take the first step towards developing your application with a team that understands your needs and has the skills to bring your ideas to life. Visit OneSeven Tech to learn more about our services and how we can help you achieve your app development goals.

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