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The current build of my iOS app opens noticeably slower than it should, and that single issue is hurting the overall user experience. I need an experienced iOS engineer to zero-in on the root causes, streamline the launch sequence, and deliver measurable gains in raw loading time. What you will be doing • Profile the project with Xcode Instruments (Time Profiler, Launch Time, and any other tools you prefer) to identify bottlenecks in startup code, heavy asset decoding, blocking network calls, or mis-configured Core Data operations. • Refactor, defer, or cache expensive tasks so the first screen becomes visible as quickly as possible, while keeping code readability intact. • Supply before-and-after metrics (cold and warm launch) captured on at least one recent iPhone running the latest iOS release. Acceptance criteria 1. Cold launch time reduced and verified by Instruments trace. 2. No new crashes, warnings, or regressions introduced. 3. A concise change log summarising tweaks and the reasoning behind them. The codebase is under Git, so I will add you as a collaborator; work can happen on a separate branch and we can merge after review. If your optimisation touches build settings, [login to view URL] entries, or asset pipelines, please document that clearly. Let me know the tools or techniques you usually rely on for performance tuning and your typical turnaround for a task of this scope, and we can kick off immediately.
Project ID: 40626267
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Hi, how are you? I can help optimize your iOS app's launch performance using Xcode Instruments (Time Profiler, Launch Time, and related tools) to identify and eliminate startup bottlenecks. I'll provide before-and-after launch metrics, implement clean optimizations without regressions, and document all changes. I can start immediately and typically complete this type of optimization within 1–2 days. Kind regards.
$357 USD in 7 days
5.0
5.0
241 freelancers are bidding on average $443 USD for this job

Hey there, A fast launch experience is essential for any iOS app. I'll focus on the startup sequence, eliminate unnecessary delays, and make sure your first screen appears as quickly as possible without affecting the stability of your application. ★ What I'll Deliver: ➜ Analyze the app using Xcode Instruments, including Time Profiler and Launch Time, to pinpoint the exact startup bottlenecks. ➜ Optimize asset loading, startup logic, network requests, and Core Data operations while maintaining clean, readable code. ➜ Provide before and after launch metrics for cold and warm starts, document all changes, and ensure the app remains free of new crashes or regressions. ★ My Workflow: ✔ Work on a separate Git branch for safe code reviews. ✔ Document any changes to build settings, asset pipelines, or Info.plist. ✔ Deliver a clear optimization summary with measurable results. ❓ A Quick Question: Approximately how long does the app currently take to launch on a recent iPhone? I look forward to discussing your project. Thank you.
$500 USD in 7 days
10.0
10.0

Hi there, I’m interested in optimizing your iOS app to improve its loading speed. To get started, I’ll need to review the current state of the app. Could you please share your GitHub access so I can take a look right away? Let’s chat soon to discuss the next steps.
$250 USD in 3 days
8.8
8.8

Hi — Elias here from Miami. I understand you're facing challenges with your iOS app's loading speed, which can significantly impact user experience and retention. The goal is to enhance performance without compromising functionality. What usually matters most here is identifying the bottlenecks causing delays. A common issue in apps like yours is how resources are loaded and initialized. The tricky part is ensuring that optimizations don’t introduce new complexities, especially with future features in mind. My approach would involve profiling the app to pinpoint slow-loading assets and inefficient code paths. I would prioritize optimizing network requests, image loading, and overall architecture to ensure smooth performance. This way, we can build a stable foundation that supports future updates. I’ve worked on similar projects where optimizing loading times led to improved user engagement. This experience has taught me the importance of balancing immediate fixes with long-term maintainability. A few questions to better understand the scope: Q1 – Have you identified specific areas in the app that are slower than expected? Q2 – What is the current architecture of your app, particularly regarding data handling? Q3 – Are there any upcoming features we should consider while optimizing? Looking forward to hearing from you.
$500 USD in 3 days
8.1
8.1

Hello!! I have seen your project post as you need an experienced iOS developer to optimize your application's startup performance and significantly reduce launch time without affecting stability or functionality. I have 10+ years of experience in iOS application development, Swift, Objective-C, Xcode Instruments, performance optimization, memory management, and production app maintenance. I can profile your application using Xcode Instruments, identify startup bottlenecks, optimize launch workflows, defer non-critical tasks, improve asset loading, eliminate blocking operations, optimize Core Data and network initialization, and fine-tune build settings where required. I will provide measurable before-and-after performance metrics, ensure zero regressions, and document every optimization for future maintenance. I WILL PROVIDE 2 YEARS OF FREE ONGOING SUPPORT, COMPLETE SOURCE CODE, WE WILL WORK WITH AGILE METHODOLOGY, AND I WILL ASSIST YOU FROM INITIAL OPTIMIZATION THROUGH SUCCESSFUL DELIVERY. I am ready to start immediately and can deliver a detailed performance analysis, optimization plan, and verified launch time improvements. I eagerly await your positive response. Thanks, Christina
$494 USD in 7 days
8.4
8.4

❤️❤️❤️ Greetings ❤️❤️❤️ I have reviewed your iOS App Loading Speed optimization project and understand that you need measurable improvement rather than general performance cleanup. I am Ozgur Ozbas, a Full-Stack Mobile Developer with 10+ years of experience in Flutter, iOS/Android applications, API integration, Firebase, performance optimization, and production mobile apps. My approach would be to profile the existing app first using Xcode Instruments, including Launch Time and Time Profiler, to identify exactly what is delaying the first screen. I would investigate synchronous API calls, expensive initialization, image/asset decoding, database/Core Data operations, third-party SDK initialization, and unnecessary main-thread work. I would then defer non-critical operations, introduce appropriate lazy loading/caching, optimize asset handling, and improve the startup sequence without changing existing functionality unnecessarily. You will receive before-and-after cold and warm launch measurements on a real iPhone, a concise changelog explaining each optimization, and all changes committed to a separate Git branch for review. Q1. Is the current app built entirely with Flutter, or does it contain native Swift/Objective-C modules? Q2. What is the current cold-launch time on your test iPhone, and do you have a target launch time you would like to achieve? Best regards, Ozgur Ozbas
$500 USD in 7 days
7.9
7.9

Hi, It will be an honor for me to work with you. I have got 12 years of iOS development experience (SwiftUI, Swift). Lets discuss this in detail and get this started. I will fix the loading and slowness of the app for you using xcode tools and other technics. Looking forward to hear from you.
$450 USD in 3 days
6.9
6.9

Hi there, I will profile your startup sequence using Xcode Instruments (Launch Time, Time Profiler, and System Trace) to identify main-thread bottlenecks, refactor heavy dependencies to initialize lazily or on background threads, and deliver verified before-and-after cold/warm launch metrics. With 5+ years of native iOS experience in Swift and UIKit/SwiftUI, I will submit a clean pull request with optimized launch code and zero UI regressions. Let's connect on chat to get repository access and review your baseline startup targets so we can get started. Regards, Hassan
$500 USD in 7 days
6.6
6.6

Hello, With over a decade of experience, we at A4Logic have become experts at optimizing mobile app performance and improving user experiences. Our in-depth knowledge of iOS development, backed up by our extensive skillset in profiling apps using Xcode Instruments and other preferred tools, allows us to quickly identify the root causes of slow app launches. By thoroughly analyzing elements such as startup code, heavy asset decoding, blocking network calls, and mis-configured Core Data operations, we not only pinpoint the bottlenecks but also devise efficient solutions for them. When it comes to streamlining app launch times, we apply a strategic combination of refactoring, deferring, and caching expensive tasks. Our aim is always two-fold; to make the first screen visible as quickly as possible while ensuring optimal code readability. Since your project is under Git, you can count on us to work collaboratively with your existing system. We will keep a detailed document of all changes made during optimization and provide you with comprehensive before-and-after metrics - cold and warm launch times on at least one recent iPhone. Client satisfaction lies at the heart of everything A4Logic does. That's why aside from delivering measurable gains in raw loading time in your iOS app, we assure zero introduction of new crashes, warnings or regressions. With our 5-star rating and impressive 97% project completion rate, you can be confident t Thanks!
$350 USD in 4 days
6.2
6.2

Hi there, Slow iOS launch issues are usually a mix of work happening too early, blocking calls on the main thread, and assets or persistence initialization competing before the first screen is ready. The useful part is separating what truly belongs at startup from what can safely move later. I’d begin with Instruments and launch-time signposts, capture a clean baseline, then trace the heaviest startup paths before changing anything. From there, I’d defer or cache only the work that materially affects first render and verify each change against cold and warm launches. One tricky area is avoiding “faster” startup changes that simply push visible delays into the first interaction. Which iPhone models and iOS versions are most important for your baseline? Does the app currently perform authentication, Core Data setup, or network requests before showing the first usable screen? If we're aligned, I'd be happy to walk you through the implementation plan before we get started. Best regards
$450 USD in 5 days
6.0
6.0

I understand the importance of optimizing your iOS app's loading speed to enhance user experience. By profiling the project with Xcode Instruments and utilizing the Time Profiler to identify bottlenecks, I will focus on various aspects like startup code, asset decoding, and any network call issues. I prioritize maintaining code readability while implementing optimizations such as caching or deferring expensive tasks to ensure that the first screen appears swiftly. I'll provide detailed before-and-after metrics, capturing cold and warm launch times on the latest iPhone, alongside a concise change log summarizing all adjustments and rationales. Maintaining the stability of your app is paramount; therefore, ensuring no new crashes or warnings are introduced will be a key focus. Please let me know which specific tools or additional techniques you recommend for performance tuning, as What specific tools or techniques have you previously used for performance tuning?.
$250 USD in 10 days
5.3
5.3

Hi — Khalid here. I understand you’re looking to improve the launch performance of your iOS app by identifying exactly what is slowing startup and reducing the time it takes for the first screen to appear without affecting stability. What usually matters most here is finding the real bottleneck instead of guessing. In many apps, slow launches come from work being done on the main thread, eager network requests, heavy asset decoding, Core Data initialization, or expensive dependency setup. The goal is to move only the essential work into launch and defer everything else safely. My approach is to profile the app with Xcode Instruments, including Time Profiler and Launch Time analysis, compare cold and warm launches, then optimize startup code, asset loading, caching, and initialization order. Every change is measured with before-and-after metrics, documented clearly, and verified to avoid regressions. I’ve optimized several iOS and Flutter applications where startup performance was a priority, delivering measurable improvements while keeping the codebase clean and easy to maintain. A few questions before we begin: Q1 – Is the app built fully in Swift/SwiftUI, UIKit, or Flutter? Q2 – Which iPhone model and iOS version are you using for your baseline measurements? Q3 – Does the app perform any API calls, database migrations, or authentication checks during launch? Happy to discuss the details and start immediately. Best regards, Khalid
$500 USD in 7 days
4.9
4.9

hi, i have reviewed the details of your project. i have experience optimizing ios applications for better startup performance and user experience. i will profile your app using xcode instruments, identify launch bottlenecks, optimize startup tasks, reduce unnecessary processing, and improve asset loading. i will provide before and after launch time results along with clear documentation of all changes made. can we schedule a quick meeting to discuss the project in detail. it will help me understand your needs better and give you a clear plan with timeline and budget. i will also share my portfolio during the chat. mughiraa
$500 USD in 7 days
5.0
5.0

As a seasoned iOS developer, I've consistently prioritized performance optimization in my work. I am well-accustomed to using Xcode Instruments to identify, analyze and eradicate potential performance bottlenecks. Shooting code squarely for performance optimization is my modus operandi. I intend to bring the same expertise and attention to detail to identifying and remedying the issues causing slower launch times in your app. Turning over a faster, more efficient app will be my sole focus once we get started. My process would include profiling the project with Xcode Instruments (Time Profiler, Launch Time) and other preferred tools specific to your app to locate any and all flaws that hinder rapid startup. Post analysis, I'd make necessary adjustments such as deferring or caching expensive tasks, streamlining asset decoding and network calls, or addressing any misconfigurations. To ensure maximum transparency throughout this optimization journey, I'll document every change made in a concise change log with clear reasoning behind them. Ultimately, with my experience in clean architecture and maintainable code that delivers reliable results, I am confident we can put those sluggish loading times firmly behind us. Considering my proficiency in Git collaboration and my deep appreciation for timely deliveries without compromising quality, I am eager to hit the ground running with your project!
$250 USD in 7 days
5.3
5.3

⭐⭐⭐⭐⭐ Optimize Your iOS App's Loading Time for Better User Experience ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project needs and see you are looking for an iOS engineer to enhance your app's performance. You don't need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects focused on iOS optimization. I will analyze your app, identify bottlenecks, and implement efficient solutions to speed up loading times. ➡️ Why Me? I can easily improve your iOS app's loading time as I have 5 years of experience in iOS development, specializing in performance tuning, profiling, and optimization. My expertise includes using Xcode Instruments, refactoring code, and handling Core Data efficiently. Additionally, I have a strong grip on Swift, Objective-C, and Git, ensuring that I can deliver quality results. ➡️ Let's have a quick chat to discuss your project in detail. I can show you examples of my previous work, demonstrating my ability to enhance app performance. Looking forward to chatting with you! ➡️ Skills & Experience: ✅ iOS Development ✅ Performance Tuning ✅ Xcode Instruments ✅ Code Refactoring ✅ Swift Programming ✅ Objective-C Programming ✅ Core Data Management ✅ Git Version Control ✅ App Profiling ✅ Network Optimization ✅ User Experience Improvement ✅ Change Log Documentation Waiting for your response! Best Regards, Zohaib
$350 USD in 2 days
5.2
5.2

Hello Dear, I’m Md. Toriqul Islam, and I’m excited to partner with you. I can dive into your project immediately. I have rich experience in iOS performance optimization, Swift, Xcode Instruments, profiling, and application startup optimization. I understand you need to identify startup bottlenecks, optimize the app launch sequence, reduce cold and warm launch times, and provide measurable performance improvements with documented results. I follow a systematic profiling approach using Xcode Instruments to deliver stable optimizations without introducing regressions. I am skilled in Swift, Xcode, Instruments, Core Data, Git, performance profiling, and iOS optimization. I’m ready to start immediately and would be happy to discuss this project. Looking forward to hearing from you. Best regards, Md. Toriqul Islam
$250 USD in 3 days
5.3
5.3

Hi There! I specialize in iOS performance optimization. With 9+ years of experience, I improve app launch speed by identifying bottlenecks and implementing measurable, production-safe optimizations. Here’s how I can help: 1. Profile your app with Xcode Instruments to identify startup, asset, and network bottlenecks. 2. Optimize launch flow, defer expensive tasks, and improve caching without affecting stability. 3. Deliver before-and-after launch metrics, a documented changelog, and regression-tested code. Is your app built natively in Swift/Objective-C or with Flutter?
$500 USD in 7 days
4.7
4.7

Hi, I’ve worked on performance optimization tasks with similar goals, where the focus was identifying startup bottlenecks and improving launch responsiveness without affecting stability. I understand that the fastest fix comes from measuring first, then optimizing only what matters. A common challenge is hidden work during app launch blocking I/O, asset loading, or initialization that delays the first screen. I’ll profile the app with Xcode Instruments, optimize the launch sequence, defer non-critical tasks, and validate improvements with before-and-after cold and warm launch metrics. You’ll receive documented code changes, verified performance gains, and a concise change log for review. Best Regards, Muhammad Saad K
$500 USD in 7 days
4.8
4.8

As an experienced iOS developer with a strong focus on performance optimization, I am confident I can provide the results you're seeking. My familiarity with Xcode Instruments and other profiling tools will allow me to identify and mitigate bottlenecks in your app's loading sequence effectively. In addition, my deep understanding of the iOS platform will enable me to refactor, defer, or cache expensive tasks while maintaining code readability - key factors when it comes to reducing loading times. What sets me apart is not just my 8+ years of industry experience but my ability to leverage this experience to consistently deliver high-quality solutions. As demonstrated by my extensive project history, I have successfully resolved similar problems many times before within the stipulated time-frame without introducing new errors. Alongside this proficiency, I bring a keen eye for solid documentation which will ensure any changes made are clearly cataloged and explained. Above all, your satisfaction is paramount to me. That's why my services include not only the enhancement itself but also post-delivery support to ensure a smooth integration into your existing codebase. With me as your collaborator, rest assured the quality and integrity of your app will not only meet expectations but exceed them. Let's optimize your iOS app for better user experiences together!
$450 USD in 7 days
4.8
4.8

Hi, I'd be happy to help with this. Startup performance issues are best diagnosed by profiling the app rather than guessing. If you can share Git access, I'll first analyze the project using Xcode Instruments to identify the root cause, then optimize the launch flow and share the before/after results along with a summary of the changes. Looking forward to discussing it. Thanks!
$500 USD in 7 days
4.8
4.8

Hello, I understand that you're looking to improve the loading performance of your iOS app to enhance the user experience. This is a critical aspect, and I’m here to help you address it effectively. With over five years of experience in iOS development, I have a solid track record of optimizing app performance. I’m proficient in using Xcode Instruments, including Time Profiler and Launch Time, which will allow us to identify and eliminate bottlenecks in your app’s startup processes. Here’s how I plan to tackle your project: - Profile the app with Xcode Instruments to pinpoint slow startup components. - Refactor and optimize code, including deferring and caching resource-heavy tasks, ensuring the first screen loads quickly while maintaining code readability. - Provide comprehensive before-and-after metrics for both cold and warm launches on the latest iPhone model. - Document all changes made, including any adjustments to build settings or asset pipelines, for clarity and future reference. I’m eager to start on this project and confident in delivering measurable improvements without introducing new issues. Please feel free to share your preferred tools or any additional details, and I’ll be ready to begin right away.
$250 USD in 7 days
4.8
4.8

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