App Performance Optimization

Deliver faster, more reliable React Native apps at scale to enhance user satisfaction and drive revenue

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WHY OPTIMIZe APPS

Optimizing Apps Is Key

70%
of app users quit an app if it is too slow to load or crashes.
Source
$1M
annually is at risk for U.S. businesses alone due to slow app performance.
Source
4-5%
of users are retained by most apps after 30 days, with optimized apps seeing better retention.
Source
43%
of users expect better speed and reliability from apps compared to mobile sites.
Source

let's discuss your case

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benefits

React Native Optimization Is Business-Critical

App performance is directly tied to user satisfaction, operational efficiency, and revenue growth. It’s crucial to monitor your React Native app performance metrics to identify bottlenecks, maintain user satisfaction, and ensure smooth business operations.
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KEEP UP WITH HIGH DEMAND
Handle traffic surges during peak times like sales or product launches without crashing or slowing down.
SCALE FOR RAPID GROWTH
Ensure your React Native app grows alongside your business, managing increased users and data effortlessly.
CUT LONG-TERM COSTS
Minimize expenses on bug fixes, support, and infrastructure by addressing performance issues early.
FUTURE-PROOF YOUR PRODUCT
Get ready for tomorrow’s demands with an app that can adapt to new technologies and scale confidently.
PrOCESS AND DELIVERABLES
Optimize Your React Native App Performance With DMAIC

To achieve peak app performance, guesswork isn’t enough. That’s why we apply the DMAIC process—a structured, data-driven approach that ensures measurable results. From defining the root causes of issues to implementing sustainable solutions, DMAIC bridges technical excellence with long-term reliability.

01

Define

02

Measure & Analyze

03

Implement

04

Control

Define

We start by understanding your project goals and business needs to develop the most effective solutions.

Measure & Analyze

We conduct a custom performance audit, analyzing key areas such as FPS, TTI, app size, and CPU consumption.

Implement

We implement the suggested enhancements outlined in our audit report, ensuring all recommendations are addressed effectively.

Control

We provide strategies for controlling and mitigating future technical debt. This includes implementing preventative tools and processes tailored to your project and team.

DELIVERABLES

What We Deliver for Your Success

React Native performance audit report
Presentation of the report to your team
Implementation of suggested solutions
Regression prevention suite
WHY PARTNER WITH US
Why Partner With Callstack

We don’t just optimize apps—we future-proof them. As Meta partners and React Native core contributors, we are at the forefront of the ecosystem, bringing unparalleled insights into every project. With deep expertise in the React Universe and a data-driven mindset, we address performance challenges at their core, delivering measurable improvements that stick. Whether it’s faster load times, smoother animations, or scalability under pressure, we bring the skills, tools, and vision to keep your app ahead of the curve.

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FAQ
YOUR QUESTIONS ANSWEReD
Got questions about optimizing your React Native app’s performance? Here’s a quick guide to help you understand our process, approach, and how we deliver lasting results.
Can you work with our existing infrastructure and legacy systems without causing downtime?
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Yes. We tailor our approach to fit your current infrastructure, doing the planning, testing, and phased rollouts to minimize downtime. Our goal is to enhance performance without disrupting critical business operations.

What key performance metrics do you focus on when optimizing enterprise applications?
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We prioritize metrics such as load times, response latency, error rates, memory usage, and user satisfaction scores. We can pinpoint bottlenecks and ensure tangible, data-driven improvements by monitoring these indicators. Also, we work with the client's stakeholders to understand the metrics that are valuable for them.

How does your approach differ from traditional performance tuning or simple code refactoring?
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We apply the DMAIC approach as this method is holistic and data-driven, going beyond surface-level fixes. We combine deep diagnostic tools, architectural reviews, and best practices to deliver sustainable gains rather than quick, temporary fixes.

How long does it take to see measurable improvements in app speed and responsiveness?
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While timelines vary, many clients notice initial gains within a few weeks of our assessment and early optimizations. Over the following months, we implement deeper changes, resulting in sustained and measurable performance improvements. Keeping great performance metrics is a continuous process, though.

Do you also offer ongoing performance monitoring and maintenance after the initial optimization?
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Yes. We provide continuous monitoring and periodic performance reviews, ensuring that your app remains responsive, stable, and capable of adapting to evolving business needs and user traffic patterns.

Can you help us scale our app to handle sudden traffic spikes and global user bases?
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Absolutely. We specialize in implementing scalable architectures, strategic load balancing, and global distribution solutions so your app can handle surges in demand without slowing down.

How do you ensure that security and compliance standards are maintained while optimizing performance?
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We apply best practices like data encryption, secure coding standards, and thorough security reviews. Our optimization process never compromises the protective measures critical to your enterprise environment.

How do you handle complex integrations with third-party APIs and services affecting performance?
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We thoroughly review API dependencies, implement caching or batching strategies, and work with your vendors to ensure that external services perform optimally and seamlessly within your ecosystem.