What is the Scrum methodology? How it works and how to apply it in your project

Fecha: 4 de August de 2026 Noelia Leiro

Mobile application development is often affected by late releases, buggy functionality or products that do not meet market expectations. These shortcomings often arise from rigid development methodologies that do not allow for rapid adaptation to changes.

Scrum emerges as the leading solution, offering an agile framework that enables app development teams to continuously innovate and deliver value.

This article will guide you through the principles of Scrum and show you how to implement it effectively to transform the delivery of your digital products.

If you prefer to watch the video, here it is:

What is the Scrum methodology? Definition and fundamental principles

Scrum is an agile, lightweight and iterative framework, designed for teams of 3 to 9 people to tackle complex and adaptive problems, delivering products of the highest possible value in a productive and creative way. Its effectiveness lies in its empirical nature, based on experimentation and continuous learning.

The framework was developed by Ken Schwaber and Jeff Sutherland to solve the complexity inherent in software projects, and was formally introduced in 1995.

The three pillars of Scrum are transparency, inspection, and adaptation. Transparency ensures that all aspects of the process are visible to decision makers, inspection involves periodically reviewing progress toward the sprint goal, and adaptation allows the process or product to be adjusted based on the inspection results.

Unlike other agile methodologies such as Kanban or XP, Scrum establishes specific roles, events and artifacts that structure the work in short, iterative cycles called Sprints. This structure makes it especially suitable for mobile app development, where requirements can change rapidly and user feedback is crucial to the success of the product.

The following is a comparison between Scrum and other relevant methodologies for app development:

The three roles and five events of Scrum are formally defined in The Scrum Guide, the official document written and maintained by the creators of Scrum. This document is considered the reference definition of Scrum and is regularly updated to reflect the evolution of the framework.

The 3 key roles in Scrum and what each one does

Scrum defines three main roles that collaborate closely to ensure value delivery. Each role has specific responsibilities, but they operate as a self-organizing, cross-functional unit.

• Product Owner: Responsible for maximizing the value of the product resulting from the work of the development team. To do so, he/she manages the Product Backlog, making sure that the items are clearly defined, prioritized and accessible to all.
• Scrum Master: Acts as a servant leader for the Scrum Team and the organization. Facilitates the adoption and understanding of Scrum, removes impediments that hold the team back, and ensures that the rules of the framework are followed.
• Development Team (Developers): They are the professionals who build the potentially deliverable increment in each Sprint. They are self-organized and cross-functional, which means that they have all the necessary skills to convert Product Backlog items into functionality.

A common mistake is to confuse the Scrum Master with a traditional project manager. While a project manager exercises more directive authority over planning and resources, the Scrum Master focuses on process and empowering the team, facilitating their autonomy and continuous improvement, according to Teaching Agile.

The 5 Scrum events explained step-by-step

Scrum structures work through a series of defined events, each with a fixed purpose and duration, known as a “time-box”.

1. Sprint: This is the heart of Scrum, a cycle of fixed duration (usually 1 to 4 weeks) during which a usable and potentially publishable product increment is created. For app development, many teams opt for weekly or two-week sprints to get constant feedback.
2. Sprint Planning: At the beginning of each Sprint, the Scrum Team collaborates to define what will be delivered in the Sprint (Sprint Objective) and how it will be achieved. Items are selected from the Product backlog to form the Sprint backlog.
3. Daily Scrum: A daily 15-minute meeting for developers to synchronize activities, inspect progress toward the Sprint goal and adapt the plan if necessary. It is not a reporting meeting, but an alignment and impediment resolution meeting.
4. Sprint Review: At the end of the Sprint, the Scrum Team and stakeholders inspect the increment and results of the Sprint. The increment is demonstrated and the Product backlog is adapted if necessary, based on the feedback received.
5. Sprint Retrospective: This is the last opportunity for the Scrum Team to inspect itself and create an improvement plan for the next Sprint. It identifies what worked well, what can be improved and how to implement those changes.

The quantifiable impact is highly relevant: teams that implement full Scrum improve their productivity between 300% and 400%, and the best teams achieve increases of up to 800%. In addition, these teams achieve a 250% higher quality improvement compared to teams that do not implement formal estimation. These numbers reflect the true value of adhering to Scrum events and practices rigorously.

Scrum artifacts: Product backlog, Sprint backlog and the incremental backlog

Scrum artifacts represent work or value. They are designed to maximize transparency of key information.

• Product backlog: An ordered and prioritized list of everything needed for the product. The Product owner is responsible for its content, availability and prioritization, which is based on business value and user feedback.
• Sprint backlog: A subset of the Product backlog selected by the developers for the current Sprint, along with the plan to deliver the increment and the Sprint target. It represents the work that the development team is committed to complete.
• Increment: A functional and potentially publishable part of the product that is generated at the end of each Sprint. It is the sum of all Product backlog items completed during a Sprint and the value of the increments of all previous Sprints.

Keeping these artifacts up to date in tools such as Jira, Trello or monday dev is crucial, especially for remote teams, as they facilitate transparency and collaboration, according to Monday.com.

How to apply Scrum in your app project: a practical step-by-step guide

Implementing Scrum in your mobile app project requires a structured approach. At Actualizatec, we have developed a practical methodology for app teams to go from zero to functional Scrum in 10 weeks.

1. Step 1: Form your Scrum team and clearly define roles. Identify your Product Owner, Scrum Master and developers. Make sure everyone understands their responsibilities and the value they bring to the team.
2. Step 2: Create your initial product backlog with user stories prioritized by value. The Product Owner should work with stakeholders to identify the key features of the app. Prioritize these features based on user and business value.
3. Step 3: Plan your first Sprint (recommended duration: 2 weeks for apps). Perform a Sprint planning where the team selects the highest priority user stories from the Produc backlog, breaks them down into tasks and estimates the effort.
4. Step 4: Run the Sprint with Dailys and progress tracking. The team works on Sprint backlog tasks, performing Daily Scrums for synchronization and impediment resolution. Uses tools such as Jira or Trello to visualize progress.
5. Step 5: Review, retrospective and adjust for the next Sprint. At the end of the Sprint, the team demonstrates the increment in the Sprint review. Then, in the retrospective, process improvements are identified for the next cycle.

A real success story is BENU, a leading pharmacy and healthcare organization in the Netherlands. They adopted Scrum with Kanban practices to improve their mobile app “Mijn BENU”, achieving a more than 50% improvement in product innovation and customer satisfaction. This transformation improved collaboration, transparency and customer focus, resulting in more predictable and efficient feature deliveries, demonstrating how Scrum is especially effective in mobile application contexts.

Another telling case is Sto, a building materials company that developed their mobile app “Sto Online” in just 6 weeks using Scrum. Working with a dedicated Scrum Team, they based the development entirely on customer feedback, achieving a significant increase in user engagement and ROI. This case demonstrates the effectiveness of Scrum to bring apps to market quickly without sacrificing quality, validating the short sprint approach for mobile apps.

Common mistakes when implementing Scrum in app teams (and how to avoid them)

Implementing Scrum can present challenges, especially in app development teams. Recognizing and avoiding these mistakes is key to success.

• Sprints too long: Sprints longer than two weeks can reduce agility and early feedback. Ideally, keep them between 1 and 2 weeks for apps, allowing fast learning cycles.
• Absent or unauthorized Product Owner: A Product Owner who does not prioritize the Product Backlog based on user data or lacks the authority to make product decisions slows down the team and diverts focus from real value.
• Dailys that become reporting meetings: The Daily Scrum is not a report to the Scrum Master or Product Owner, but a team synchronization meeting. It should be brief and focused on progress toward the Sprint goal and impediments.
• Not delivering a functional increment at the end of each Sprint: If a Sprint ends without a potentially publishable increment, one of the fundamental principles of Scrum is lost: delivering incremental value. This can lead to accumulation of technical debt.
• Ignoring the Retrospective: Skipping or not taking the retrospective seriously impedes continuous team and process improvement, an essential pillar of Scrum. Eighty-one percent of Scrum teams conduct post-sprint retrospectives, underscoring its importance.

Key Points

• Scrum is an agile, empirical and iterative framework, ideal for the development of mobile apps with changing requirements.
• The 3 pillars of Scrum (transparency, inspection, adaptation) are essential for delivering value.
• The roles of Product Owner, Scrum Master and developers are key to the functionality of the team.
• The 5 Scrum events (Sprint, Planning, Daily, Review, Retrospective) structure the work in short and productive cycles.
• The optimal duration of a Sprint for apps is 1 to 2 weeks, facilitating feedback and adaptation.
• Avoiding common mistakes such as long Sprints or absent Product Owners is vital for a successful implementation.

Conclusion: From theory to practice in your next sprint

Implementing Scrum in your mobile app development team is not just about adopting a methodology; it is about transforming your team’s culture toward agility, transparency and continuous improvement. The fundamentals of Scrum, with its defined roles, structured events and clear artifacts, offer a proven path to deliver higher quality products, faster and with greater alignment to market needs.

At Actualizatec, we are experts in helping teams implement agile processes in mobile app development. Our approach focuses on guiding you to avoid common mistakes and maximize the impact of Scrum in your organization. The first concrete step is simple: organize your Sprint Planning #1 this week.

We invite you to start with a 2-week pilot sprint. See how your team starts to self-organize, to generate functional increments and to improve its communication. Agile transformation is within your reach, and at Actualizatec we are ready to accompany you every step of the way.

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Frequently Asked Questions

What is the Scrum methodology and what is it for?

Scrum is an agile framework that enables self-organizing teams to address complex problems adaptively, delivering high-value products iteratively. It serves to improve productivity, product quality and customer satisfaction, especially in environments where requirements change rapidly.

What are the 3 main roles in Scrum?

The three main roles in Scrum are the Product Owner, responsible for maximizing product value and managing the Product Backlog; the Scrum Master, who facilitates the process and removes impediments; and the Development Team, the self-organizing team that builds the product increment.

How long is a sprint in Scrum?

A Scrum Sprint can last between 1 and 4 weeks, with the most recommended duration for app teams being 1 to 2 weeks. This shorter duration allows to get more frequent feedback, reduce risks and adapt quickly to market or user changes.

What is the difference between Scrum and Kanban?

Scrum is based on fixed-duration Sprints with defined roles and events, delivering increments at the end of each cycle. Kanban focuses on a continuous flow of work, allowing changes at any time and managing work through work-in-progress (WIP) limits.

How is a sprint planned in Scrum?

Sprint Planning is the event where the Scrum Team collaborates to define the Sprint Objective and select the highest priority items from the Product Backlog to be committed for the Sprint. The user stories are broken down into smaller tasks and the effort required to complete them is estimated.

What is the Daily Scrum and how long should it last?

The Daily Scrum is a daily 15-minute meeting for developers to synchronize activities and review progress toward the Sprint Goal. Each developer shares what they did the day before, what they will do today, and any impediments they are facing.

What is the Product Backlog in Scrum?

The Product Backlog is an ordered and prioritized list of all the features, enhancements and fixes that are desired in the product. It is managed by the Product Owner and is constantly evolving based on user feedback and business needs.

What is the difference between Sprint Review and Sprint Retrospective?

The Sprint Review is an event at the end of the Sprint where the Scrum Team demonstrates the completed increment to stakeholders to get feedback on the product. The Sprint Retrospective is an internal Scrum Team meeting to inspect the work process and plan improvements for the next Sprint.

Does Scrum work for small app development teams?

Yes, Scrum is highly effective for small app development teams, even 3-5 people. Roles can be combined (for example, the Product Owner can also be part of the development team), while maintaining the principles of transparency, inspection and adaptation.

What tools are used to manage Scrum?

The most common tools for managing Scrum include Jira, Trello, Asana, ClickUp and monday dev. These platforms facilitate the management of Product Backlogs, Sprint Backlogs, Kanban boards, task tracking and collaboration, and are essential for remote teams.

Glossary of Key Terms

Agile Framework: A set of principles and practices that enable teams to develop products iteratively and adaptively, responding quickly to change. Explore common mistakes when creating an app.

Sprint: A fixed time cycle in Scrum (usually 1 to 4 weeks) during which a usable product increment is created.

Product Backlog: A prioritized and constantly evolving list of all the functionality and requirements needed for a product.

Sprint Backlog: The subset of items from the Product Backlog that the Development Team selects to complete during a specific Sprint.

Increment: The sum of all Product Backlog items completed during a Sprint, which is functional and potentially publishable.

Product Owner: The role in Scrum responsible for maximizing product value and managing the Product Backlog.

Scrum Master: The role in Scrum that facilitates the process, coaches the team in Scrum and removes impediments.

User Story: A brief description of a feature from the end user’s perspective, used to define items in the Product Backlog.