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My navigation app is already up and running in Xcode, but location services refuse to behave as expected and a few screens look distorted on certain iPhones and iPads. I have not had the chance to run the project on a broad range of devices or iOS versions yet, so unexplored edge-cases may still be lurking. What I need from you is straightforward: dive into the CoreLocation / MapKit layer, trace why live coordinates lag or fail to update, adjust any permission or accuracy settings, and confirm the fix works consistently on recent iOS releases. While you are in the codebase, please also iron out the display errors that only appear on some device sizes—Auto Layout constraints or size-class tweaks will likely solve it. Once the app is stable, guide me through the final stretch to the App Store: provisioning profiles, certificates, App Store Connect metadata, TestFlight, and finally submitting the build for review. Deliverables (acceptance criteria): • Reliable, real-time location tracking across tested devices • Consistent UI with no broken layouts on common screen sizes • A TestFlight build I can install and evaluate • A successfully submitted version awaiting Apple review, plus clear notes on every change you made The project is already set up in the latest Xcode with git access ready; I simply need your expertise to take it from “almost there” to publicly available.
Project ID: 40605850
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HELLO, I have carefully reviewed your requirements and understand the issues with CoreLocation, MapKit, device compatibility, and the final App Store release process. I have 10+ years of experience in iOS application development, I have worked extensively with Swift, Xcode, CoreLocation, MapKit, Auto Layout, device-specific UI issues, and App Store deployment workflows. I can help identify the root cause of location tracking delays, fix permission and accuracy configurations, and ensure reliable performance across different iPhone and iPad models. I will review the existing codebase, test the application on different iOS versions and screen sizes, resolve layout issues, optimize location services, and prepare a stable TestFlight build. I can also handle the complete App Store submission process, including certificates, provisioning profiles, App Store Connect setup, and review preparation. I am glad to say we have worked on many apps in various domain like Crypto Payments App , Wallet App E-learning schools, teachers, students and parents App ,Logitics App ,Ride-sharing App ,Grocery App ,Taxi and Delivery Combined App, Pharmacy App ,Doctor App ,Dating app instagram App ,Restaurant app, healthcare, real estate app, eCommerce app,Classified , Service Provider ,Sports ,Dental ,Evant , Airbnb ,Real Estate , etc... I am available on desk as per your convenient time zone and will work on your project until you satisfied with my work. Thanks Christina
$250 USD in 7 days
8.4
8.4
94 freelancers are bidding on average $439 USD for this job

Hi — Elias here from Miami. I see you're facing issues with location services in your navigation app. This is crucial for user experience, especially if the app relies on real-time location data. The technical challenge often revolves around integrating location services with the app's core functionalities. What usually matters most is ensuring that location updates are efficient and do not drain battery life. A common issue is managing permissions and ensuring consistent behavior across different devices and iOS versions. My approach would be to analyze the existing implementation in Xcode, identifying workflow complexities or integration challenges. I'll focus on enhancing reliability and performance, ensuring the app is stable and ready for future expansions like additional mapping features. I've worked on similar navigation and location-based apps, optimizing their performance and user interaction. A few questions to better understand the scope: Q1 – What specific issues are you encountering with location services? Q2 – Are there particular iOS versions or devices where the problems are more pronounced? Q3 – Do you have specific features in mind for future updates related to location functionality? Happy to discuss the details and suggest the best technical approach. Looking forward to hearing from you.
$500 USD in 3 days
8.1
8.1

Hello, I understand your navigation app is facing two primary blockers: an unreliable CoreLocation data stream causing location lag, and a rigid UI that breaks on various screen sizes. My focus would be to stabilize these layers-first the location data pipeline, then the adaptive layout-before managing the final App Store submission process. Technical approach: I'll begin by profiling the CLLocationManager delegate methods to pinpoint the source of coordinate lag, checking accuracy settings and background mode configurations. For the UI, I'll use Xcode's view debugger to identify and resolve conflicting Auto Layout constraints, implementing stack views and size classes for better adaptability. Core modules: Location Tracking Stabilization (correcting the real-time data flow), Adaptive UI Rendering (ensuring layout consistency across devices), and App Store Deployment (handling certificates, TestFlight builds, and the final submission). Relevant systems: We developed Road Rage, a GPS navigation app that monitors driving behavior, which gave us direct experience with the CoreLocation framework in a real-world context. We also have extensive experience publishing iOS apps like Northside Rentals to the App Store. My strategy is to fix the location services first, create a TestFlight build for you to verify the fix and test UI adjustments, and then proceed with the full App Store Connect setup and submission.
$250 USD in 7 days
8.0
8.0

Hi, I’ve reviewed your Mass Route app requirements carefully. I can help stabilize the CoreLocation / MapKit flow, fix lagging live coordinates, review Objective C permission and accuracy handling, and clean up distorted layouts across iPhone and iPad screen sizes. Based on your requirements, I can help you with: • Clear execution plan before starting • Clean and maintainable development • Fast communication throughout the project • Scalable structure for future updates Before we begin, I’d like to clarify a few points: 1. When Mass Route’s location updates misbehave, does the little blue dot lag everywhere—or only after backgrounding, route changes, or permission prompts? 2. Are the layout issues happening on specific screenshots/devices, or across several size classes? 3. Do you already have an active Apple Developer account ready for TestFlight submission? Once I have this, I can confirm the exact approach and start immediately. Looking forward to working with you. Ahtesham Ahmed
$555 USD in 3 days
6.9
6.9

Hi, I’m a Full Stack and iOS Developer with 9 years of experience building and launching mobile applications. I can debug the CoreLocation and MapKit issues, fix permission and accuracy settings, improve real-time coordinate updates, and resolve Auto Layout problems across iPhone and iPad screen sizes. I’ll test the app on multiple iOS versions, prepare a TestFlight build, assist with certificates and provisioning, and complete the App Store submission with clear documentation of every change.
$250 USD in 4 days
7.1
7.1

This looks like a great fit, Hi, I will fix the CoreLocation tracking lag in Mass Route, lock down the permission and accuracy settings so live coordinates update reliably across recent iOS versions, then resolve the Auto Layout breakages showing on specific iPhone and iPad sizes. After that, I will handle provisioning, App Store Connect metadata, TestFlight distribution, and final submission. On a similar MapKit debugging project, switching from significant location changes to continuous mode with a filtered distance threshold eliminated the coordinate lag entirely. Questions: 1) Are you using CLLocationManager directly, or a wrapper? And is the lag worse when the app returns from background? 2) Which device sizes show the distorted screens (specific models or size classes)? Ready to start whenever you are. Kamran
$284 USD in 10 days
7.4
7.4

Hi, I understand you're having trouble with location updates lagging and display issues on some iPhones and iPads. Sometimes, getting the GPS data to stay accurate can be tricky, especially with recent iOS updates, and matching every screen size can be a headache. I will dig into your CoreLocation and MapKit setup, fix permission and accuracy problems, and make sure the coordinates update correctly on all the devices you test. I’ll also handle the Auto Layout adjustments to make sure your app looks good everywhere — whether on an iPhone SE or an iPad Pro. Proper communication, quality work, and saving you time are my priorities, plus I’ll guide you through submission steps, including provisioning, App Store Connect, TestFlight, and review notes. Out of curiosity, how do you see the app competing with similar navigation tools in the market? Let’s chat about making your app ready for the world, and then craft a plan to grow even bigger together. Regards, Nick
$250 USD in 3 days
6.8
6.8

Hello!! Got it, your navigation app has unreliable live location tracking through CoreLocation and MapKit, along with layout distortion on certain iPhones and iPads that needs fixing before App Store submission. Quick questions before we start: Does the location lag happen on specific iOS versions or across all of them? Are the distorted screens mostly on iPhone, iPad, or both device types? Do you already have your App Store Connect account and certificates ready? Here is my plan, trace the CoreLocation and MapKit layer to fix accuracy and update lag, adjust permission settings properly, resolve Auto Layout issues across affected device sizes, then guide the app smoothly through TestFlight and final submission with clear notes on every change made. Have resolved similar location tracking and layout issues on iOS apps before, happy to share relevant work matching this scope. Would love to hop into chat and go over the codebase together. Best regards Farhin B
$256 USD in 10 days
6.7
6.7

Hi there, I'm ready to ensure your navigation app functions seamlessly across all devices. My approach will involve diving deep into the CoreLocation and MapKit layers to identify the root causes of the location services issues. I will trace the live coordinates lag and adjust the necessary permission and accuracy settings to ensure reliable tracking. Additionally, I will address the display errors by refining the Auto Layout constraints and size-class configurations to achieve a consistent UI across various screen sizes. Once the app is stable, I will guide you through the final steps for App Store submission, including setting up provisioning profiles, certificates, and App Store Connect metadata. I will also prepare a TestFlight build for your evaluation and ensure that the final version is submitted for Apple review with detailed notes on all changes made. Looking forward to collaborating on this project to bring your app to the public. Best regards.
$250 USD in 3 days
5.9
5.9

Hi, I reviewed your project: Mass Route. I can help you build a professional mobile application with clean UI, secure API integration, authentication, push notifications, payments, backend/admin support, testing, and release guidance. I have experience with Android, iOS, Flutter/React Native workflows, Laravel/Node.js backends, APIs, and production deployment. Please message me to discuss app screens, features, platform requirements, and timeline. Portfolio: https://www.freelancer.com/u/irfanui Regards, Mohammad 4th Dimension Partners
$260 USD in 3 days
6.0
6.0

Hello, I hope this message finds you well. I have carefully reviewed your project requirements for the Mass Route navigation app. It is clear that your primary focus is on addressing the issues related to CoreLocation, MapKit integration, and UI distortions on various iOS devices. My expertise in Mobile App Development, iOS Development, and Objective C aligns perfectly with the tasks at hand. With a proven track record in resolving location services issues and optimizing app layouts for different screen sizes, I am confident in my ability to deliver the desired results efficiently. In approaching this project, I will conduct a thorough analysis of the CoreLocation and MapKit layers to identify and rectify the live coordinates lagging and updating issues. Additionally, I will address the UI discrepancies by fine-tuning Auto Layout constraints and size-class adjustments. I am keen on providing you with a seamless transition to the App Store by ensuring all necessary steps, from provisioning profiles to submission for review, are meticulously taken care of. My portfolio showcases successful projects in similar domains, which can be viewed here: ⭐⭐ https://www.freelancer.com/u/CodeAnchors ⭐⭐ Could you please share your top priority or business goal for this project? This will help me tailor my approach accordingly. Let's discuss further in an open chat to finalize the scope smoothly. Best regards, Muhammad Anas Khan
$250 USD in 4 days
5.7
5.7

Live coordinates that lag or stop updating are often caused by the interaction between CoreLocation permissions, accuracy settings, and the app lifecycle, so I'd start there before chasing UI issues that may only show up on specific devices. I'll trace the location flow end-to-end, verify how authorization changes are handled, and check the MapKit updates against recent iOS behavior. For the layout issues, I'd review the affected screens for conflicting Auto Layout constraints and size-class differences rather than applying device-specific fixes. Once everything is stable, I'll test across recent iPhone and iPad screen sizes, then walk the project through provisioning, certificates, App Store Connect, TestFlight, and the final App Store submission. You'll also get clear notes explaining every change so the project is easy to maintain after release.
$500 USD in 7 days
5.6
5.6

Dear Client, I read "Mass Route" carefully and understand you need hands-on Claude/Anthropic expertise to build or integrate an AI assistant that actually works reliably. My hands-on experience with Mobile App Development, Mobile App Testing, iOS Development aligns directly with what you need. I've built production integrations with the Claude API — prompt engineering, tool use, agentic workflows and RAG pipelines — tuned for accuracy, cost and latency, and I can bring that same rigor to your project. A few quick questions to get us started: 1. Which Claude model and use case are you targeting — chat assistant, agent, RAG, or something else? 2. Do you have existing prompts/data, or should we design the pipeline from scratch? 3. What's your expected usage volume, so we can plan for cost and rate limits? Thanks & Regards, Deepak
$488 USD in 14 days
5.2
5.2

✋ Hi There!!! ✋ THE GOAL OF THE PROJECT:- FIX COREL LOCATION TRACKING AND LAYOUT ISSUES THEN GUIDE THE APP THROUGH SUBMISSION TO THE APP STORE. <-- Questions --> Which specific iPhone and iPad models or iOS versions have shown the location lag and distorted layout issues so far. Are provisioning profiles and certificates already created in App Store Connect, or does that setup still need to be done from scratch. Similar work has been completed before covering CoreLocation and MapKit debugging for accurate real time tracking, Auto Layout fixes across varying screen sizes, and full App Store submission support including TestFlight builds and metadata setup. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$260 USD in 13 days
5.0
5.0

Hello! I'm a seasoned iOS developer with over 9 years of experience in CoreLocation, MapKit, and Auto Layout troubleshooting. I've rescued numerous navigation apps from location lag and distorted UI issues, taking them all the way to successful App Store submission. Here's how I can help: - Diagnose and fix CoreLocation/MapKit issues causing live coordinate lag or update failures - Adjust permission settings and accuracy parameters for consistent real-time tracking - Resolve display distortions across iPhones and iPads using Auto Layout and size-class tweaks - Guide you through provisioning profiles, certificates, App Store Connect, and TestFlight setup - Submit the build for review and provide clear notes on every change made I can jump into your Xcode project immediately. To target the fix, could you share which iOS versions and device models you're seeing the most issues on? Also, are you using any specific location accuracy settings currently?
$500 USD in 7 days
4.6
4.6

As a seasoned Full Stack Developer and Digital Solutions Expert, I carry experience and competence that spans over 8 years, dealing with various challenges across diverse technology landscapes. Collaborating to build, grow and scale businesses using smart digital strategies has become my forte. I have extensive expertise in Mobile App Development, especially with Flutter, Android, and iOS platforms. This makes me the perfect person to tackle the precise issues your navigation app is currently experiencing. Not only can I dive deep into the CoreLocation/MapKit layer to iron out the kinks but also ensure reliable, real-time location tracking across multiple tested devices. Additionally, having successfully executed more than 200 projects, I am well-versed in the critical nitty-gritties of App Store submission and provisioning profiles. With my assistance, you can be assured of clear communication, swift project delivery, scalable & secure solutions as well as long-term support. Let's make your vision for the Mass Route-navigation app a reality!
$499 USD in 7 days
4.8
4.8

Hello, I can start today and help take your iOS navigation app from "almost complete" to App Store ready. I'll investigate the CoreLocation and MapKit implementation, resolve live location update issues, verify permissions and accuracy settings, and ensure reliable real-time tracking across supported iPhone and iPad devices. I'll also fix the UI inconsistencies by refining Auto Layout constraints and size classes to deliver a consistent experience on all common screen sizes. Once the app is stable, I'll assist with provisioning profiles, certificates, App Store Connect configuration, TestFlight deployment, and the final App Store submission. You'll receive a thoroughly tested build, clear documentation of all changes, and support through the review process. I'm available to begin immediately and can start as soon as I receive access to the repository. Thank you.
$300 USD in 3 days
4.8
4.8

I understand you're facing issues with location services lagging and screen distortions in your "Mass Route" app. My experience with optimizing CoreLocation performance and resolving UI rendering bugs on diverse iOS devices, similar to the challenges you've outlined, allows me to address these directly. I've successfully implemented robust location tracking and ensured pixel-perfect UI across various screen sizes and OS versions for similar navigation applications. My approach will involve a deep dive into your CoreLocation and MapKit implementations. I'll systematically analyze location manager configurations, accuracy settings, and permission handling to identify the root cause of coordinate lag. For UI distortions, I'll meticulously inspect Auto Layout constraints, view hierarchy, and rendering logic, specifically targeting potential issues with dynamic type or device-specific resolutions. I’ll leverage Xcode's debugging tools and simulators, followed by testing on physical devices covering recent iOS versions and a range of iPhone/iPad models to guarantee stability. Before proceeding, could you confirm if the screen distortions are reproducible across all iPhone and iPad models, or if they appear to be tied to specific screen resolutions or notch designs? Also, have you observed any patterns in the location service lag, such as occurring only in specific geographic areas or under certain network conditions? I'm confident I can resolve these issues efficiently and would be happy to discuss the technical specifics further.
$582 USD in 21 days
4.2
4.2

Hi, I’m a senior iOS engineer with 20+ years of mobile app development experience, having built and shipped dozens of navigation apps using CoreLocation, MapKit, and Xcode. I’ll review your existing project, debug the live location issues by checking CoreLocation permission states, accuracy settings, and potential background mode misconfigurations, then test across recent iOS versions to eliminate inconsistencies. While in the codebase, I’ll fix the Auto Layout constraints causing screen distortions on specific devices by adjusting size classes or priority rules. After stabilization, I’ll handle App Store provisioning, certificates, metadata, TestFlight deployment, and submission to Apple, documenting every change in a concise summary. I’ll verify the build works reliably before submission. I can start immediately and review the codebase right away.
$400 USD in 3 days
4.3
4.3

Hi, I can take your existing Xcode navigation app from “almost ready” to App Store submission. I’ll investigate the CoreLocation/MapKit implementation to identify why live location updates are lagging or failing, review permissions, accuracy settings, background location handling, and ensure reliable tracking across recent iOS versions. I’ll also fix the device-specific UI issues by reviewing Auto Layout, constraints, and size classes to ensure the app looks consistent across common iPhone and iPad screen sizes. Once everything is stable, I can handle the final release process including provisioning profiles, certificates, TestFlight, App Store Connect setup, and submission for Apple review. You’ll receive a tested TestFlight build and clear documentation of all changes made. I’m ready to review the existing codebase and start immediately. Let’s come to chat and discuss the current issues and get the app ready for launch.
$300 USD in 4 days
4.6
4.6

hi there , i have ability finish in 40 hours with the testing , can you please come to the chat box so we can easily discuss in details , thank you ,, I am serious with the project , but question is are you ?
$800 USD in 2 days
3.6
3.6

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