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My live Flutter app already handles voice push-to-talk (PTT) and turn-by-turn navigation on both iOS and Android, but the current voice module needs a tune-up and the map layer could be richer. Voice / PTT work • I want the audio pipeline refactored for smoother, tighter PTT exchanges. Maybe a completely custom solution is required? It’s having a small issue with IOS voice kit… • Expect to dive into the existing Flutter/Dart codebase, review the current streaming logic, refine codec selection, buffering, echo suppression, and anything else that can shave milliseconds off delivery while raising clarity. • Proven experience with low-latency VoIP or walkie-talkie style apps is essential so you can spot edge-case glitches quickly. Navigation work • The map layer must present far more detailed cartography and push real-time updates (traffic, closures, live position of team members) with minimal lag. • Whether you’re most comfortable with Mapbox, Google Maps, or another SDK, show me how you will enrich the tiles, overlays, and data refresh strategy without ballooning device resource use. Deliverables (acceptance criteria) 1. Updated Flutter modules that plug into my repo cleanly, compile for both stores, and respect my existing app architecture. 2. Demonstrable PTT session where voice is noticeably crisper and latency is measurably reduced on mid-range devices and variable networks. 3. Navigation screen showcasing the new high-detail layers plus real-time update feed working for at least one hour without drift or crashes. If you understand the subtleties of real-time voice, love squeezing performance from Flutter, and have wrestled with map SDKs in depth, I’m ready to share the repo and jump straight into a milestone plan.
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Hello, I can help you tune and refactor your Flutter app’s real-time PTT voice module and enhance the navigation/map layer for smoother performance and richer live updates on both iOS and Android. For the voice / PTT module, I can dive directly into your existing Flutter/Dart codebase and optimize the full audio pipeline—stream handling, codec selection, buffering strategy, echo suppression, and iOS VoiceKit-related issues—to achieve tighter, low-latency “walkie-talkie” style communication with noticeably improved clarity and responsiveness. For the navigation layer, I can enhance your map experience using Mapbox or Google Maps (based on your current setup), focusing on: • High-detail cartography and richer tile rendering • Real-time overlays (live positions, traffic, route changes, closures) • Efficient data refresh strategy to minimize lag and battery usage • Smooth performance on mid-range devices without UI stutter I have experience working with real-time streaming and performance-sensitive Flutter applications, and I can quickly identify bottlenecks in both audio and map rendering layers. Questions: 1. Are you currently using native WebRTC, a custom socket-based stream, or a third-party VoIP SDK for PTT? 2. Which map stack is currently integrated (Google Maps, Mapbox, or custom tiles)? This bid is an initial estimate. Once I review the repo, I can propose a clear optimization plan and milestone breakdown. Looking forward to working on this. Best regards Vision
$500 AUD in 7 days
8.1
8.1
151 freelancers are bidding on average $504 AUD for this job

Hi there, I went through the requirements and it seems the main focus is improving the PTT experience without breaking the existing app flow, while also making the navigation layer more useful with richer map data and live updates. The iOS VoiceKit issue is probably where I'd start, as even a small problem in the audio pipeline can affect latency and voice quality. Once I review the current implementation, it'll be easier to determine whether it needs optimisation or a different approach altogether. A few things I would like to know: 1) What are you currently using for voice communication (WebRTC, Agora, custom implementation, etc.)? 2) Which map SDK is already integrated into the app? 3) Are the live team locations coming from an existing backend service? If you're comfortable sharing the repo, I can take a look and suggest the best way forward before we break things into milestones. Thank you.
$500 AUD in 7 days
10.0
10.0

Hello, It sounds like you've built a robust Flutter app with existing PTT and navigation, and I'm keen to help refine its core voice and mapping capabilities. I understand the importance of buttery-smooth, low-latency audio and highly detailed, real-time map data to elevate user experience. I’m Waqas from Eclairios, a professional software engineer with over 7 years of experience in app and web development. I have successfully completed 128 projects, earning a 5.0 rating from satisfied clients. I specialize in mobile apps (Android, iOS, Flutter), website development, custom APIs, and backend solutions. My goal is to deliver high-quality, scalable solutions that meet your business needs. Why hire me? ★ 100+ Projects Completed with 5-star rating. ★ 3 months of free post-launch support ★ Expertise in advanced technologies and systems Let’s connect and discuss how I can help you with your project. Best regards, Waqas
$351 AUD in 7 days
8.4
8.4

I can help with this, I will refactor your PTT audio pipeline and enrich the map layer — targeting lower latency, clearer voice, and denser real-time cartography across both platforms. For the iOS voice kit issue, I will audit the AVAudioSession configuration and interrupt handling first — misconfigured categories or missing route-change listeners are the most common culprits for PTT glitches on iOS specifically. On the map side, I will implement vector tile clustering with throttled position updates to keep the real-time team overlay smooth without spiking memory on mid-range devices. Questions: 1) Which codec and streaming protocol does the current PTT module use — Opus over WebSocket, or something else? Looking forward to your response. Best regards, Kamran
$286 AUD in 10 days
7.4
7.4

Hi I can refactor your existing Flutter PTT voice module and enhance the navigation layer while keeping the updated modules aligned with your current app architecture. I have experience with Flutter/Dart, low-latency audio streaming, WebRTC/VoIP-style flows, codec tuning, buffering, iOS AVAudioSession issues, Android audio handling, Mapbox/Google Maps SDKs, and real-time location updates. A key technical problem is reducing PTT latency and improving clarity while keeping iOS and Android audio behavior stable across variable networks. I would solve this by auditing the current streaming pipeline, tuning codec/buffer strategy, fixing the iOS voice kit issue, improving echo/noise handling, and measuring latency before and after changes. For navigation, I can enrich map layers with detailed tiles, traffic/closure overlays, team-member live positions, and efficient refresh logic without overloading device resources. I can also test long-running sessions to confirm voice stability, map accuracy, live update reliability, and clean compilation for both stores. My focus is to make the PTT feel faster and clearer while giving the navigation screen richer real-time situational awareness. Thanks, Hercules
$500 AUD in 7 days
6.6
6.6

Flutter PTT Voice & Navigation Optimization \ Hello, I reviewed your requirements and I understand the goal is to optimize your existing Flutter PTT voice system for lower latency, smoother audio delivery, and better iOS VoiceKit handling while enhancing the navigation layer with richer real-time maps, traffic updates, and live team tracking. User Flow PTT Voice Session → Optimized Audio Streaming → Real-Time Team Tracking → Enhanced Navigation Layers → Stable Cross-Platform Performance I have experience working with low-latency VoIP/PTT systems, Flutter performance optimization, and advanced map SDK integrations including real-time updates and tracking. Looking forward to reviewing the repo and discussing the optimization plan. Best regards, Shailesh P.
$485 AUD in 16 days
7.3
7.3

Hello, Your project is particularly interesting because optimizing real-time voice communication and navigation systems requires a strong understanding of performance, networking, and mobile platform limitations rather than standard app development. With 10+ years of experience in mobile application development, I have worked on real-time communication platforms, location-based applications, live tracking systems, and performance-critical mobile solutions using Flutter, React Native, native Android, and iOS technologies. For the PTT module, I can review the existing Flutter/Dart implementation, analyze the iOS Voice/Audio Session configuration, inspect codec selection, buffering strategies, network handling, echo cancellation, and latency bottlenecks to improve both audio quality and response times. If necessary, I can also recommend a custom implementation approach based on the current architecture. For navigation, I would recommend evaluating Mapbox or Google Maps depending on your requirements for traffic data, team tracking, route visualization, and custom overlays. The goal will be richer mapping details, efficient real-time updates, and stable long-duration operation without excessive battery or memory consumption. I can start with a codebase audit, identify optimization opportunities, and provide a milestone-based implementation plan before development begins. Best regards
$250 AUD in 7 days
7.0
7.0

Hello, Your project is particularly interesting because the challenge isn't building new features from scratch—it's optimizing real-time systems where milliseconds and stability make a noticeable difference to users. I can review the existing Flutter codebase, profile the current audio pipeline, and identify where latency, buffering, codec configuration, or iOS Voice Processing issues are affecting PTT performance. Depending on the findings, I can either improve the existing implementation or design a more specialized low-latency audio path while keeping compatibility with your current architecture. On the mapping side, I would evaluate the current SDK and data flow before recommending enhancements. For real-time team tracking and richer cartography, Mapbox is often a strong choice due to advanced styling and efficient live updates, though the best solution depends on your current implementation. The focus will be detailed maps, smooth location updates, traffic overlays, and long-session stability without excessive battery or memory consumption. The deliverables will integrate cleanly into your repository, include performance validation, and maintain cross-platform compatibility for both iOS and Android.
$500 AUD in 7 days
6.6
6.6

Hello There!!! ★★★★ ( Flutter PTT voice optimization with low-latency audio pipeline and enhanced real-time mapping performance ) ★★★★ I’ve carefully reviewed your project and understand you need improvements in an existing Flutter app focusing on push-to-talk voice performance and a more advanced real-time navigation map layer. The main goal is reducing audio latency, fixing iOS voice issues, and improving map detail with live updates and stable performance. ⚜ Flutter/Dart Codebase Optimization ⚜ Low-latency PTT Audio Pipeline Refinement ⚜ Codec, Buffering & Echo Suppression Improvements ⚜ iOS VoiceKit Issue Debugging & Fixes ⚜ Real-time Map Enhancements (Traffic & Live Users) ⚜ Map SDK Integration (Mapbox/Google Maps) ⚜ Performance Testing on iOS & Android Devices I have experience working on real-time Flutter applications where audio streaming and map synchronization were critical. I enjoy fine-tuning performance-heavy features like VoIP and live tracking systems where milliseconds matter. My approach will be to first audit your current PTT architecture, identify bottlenecks in audio streaming, then refactor the pipeline for stability and speed. For maps, I will enhance data refresh logic, optimize overlays, and ensure smooth real-time updates without draining device resources. I’d be happy to review your repository and suggest a clear milestone plan for improvements. Looking forward to working with you. Warm Regards, Farhin B.
$256 AUD in 10 days
6.6
6.6

Hi, This is a highly specialized project, and I appreciate that you're focused on measurable improvements rather than simply replacing components. I have experience working with Flutter applications, real-time communication systems, API integrations, and performance optimization. For the PTT portion, I would begin by auditing the existing audio pipeline, streaming architecture, codec configuration, buffering strategy, iOS audio session handling, and Voice Processing settings to identify the source of latency and audio quality issues. If needed, I can evaluate whether a more customized VoIP/PTT implementation would provide better results while remaining compatible with your current architecture. For navigation, I would review the current map implementation and recommend the most efficient approach for high-detail cartography, live traffic, team tracking, and real-time updates. The goal is to improve visual richness and update responsiveness without introducing battery drain, memory pressure, or stability issues. Before making changes, I prefer establishing baseline metrics so improvements in latency, audio quality, map refresh performance, and stability can be objectively validated against your acceptance criteria. Best, Justin
$500 AUD in 7 days
6.1
6.1

Hi, I have 5+ years of experience in Flutter. I will design and develop a fully functional Flutter mobile application for your business. The app will be cross-platform, responsive, and optimized for both Android and iOS. I will ensure smooth navigation, clean UI, and reliable performance. My Skills Include: a) Flutter Development – Expertise in building cross-platform mobile apps with responsive UI. b) State Management – Experienced in Provider, Riverpod, and Bloc for scalable apps. c) Backend Integration – Skilled in connecting apps with REST APIs, Firebase, and third-party services. d) Database Handling – Proficient in Firebase Firestore, MySQL, and SQLite. e) Deployment & Support – Experienced with publishing apps on Google Play Store and Apple App Store. Please share your ideas or reference apps, and I’ll help bring your vision to life. Lets connect in chat so that We discuss further. With Regards, Sai
$450 AUD in 10 days
5.8
5.8

Hi, We’ve developed multiple real-time apps with PTT features, including a fully functional web-based PTT solution. We understand that the quality of audio is crucial, and we’ve implemented advanced features like echo cancellation and noise suppression to enhance clarity. In addition to PTT, we’ve worked extensively with Google Maps and Mapbox, integrating features such as live location sharing, route optimization, and real-time traffic updates. With 15 years of experience, I’ve led multiple startups as a co-founder and developed several successful products. I’m equally comfortable working as a team leader or a hands-on developer, depending on the project’s needs. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit. I usually respond within 10 minutes. I’m eager to learn more about your exciting project. Best regards, Adil
$275 AUD in 7 days
5.9
5.9

I’ve improved low-latency voice features in Flutter before, fixing audio glitches and reducing delays by optimizing codecs and buffering. For your iOS PTT issue, I’d start by reviewing the existing streaming pipeline and testing if a custom audio solution might resolve the glitches faster than tweaking the current setup. On the maps side, I’ve worked with both Mapbox and Google Maps to add detailed layers and live updates while keeping CPU and memory use low. For your app, I suggest prioritizing vector tiles with selective real-time overlays for traffic and team locations to avoid lag. Quick question: Are you currently using any server-driven push updates for map data, or is it all client-polling? That influences how I’d architect real-time feeds efficiently. I’ll deliver clean Flutter modules fitting your architecture and demo sessions proving clearer voice with lower latency plus a stable, detailed navigation screen running smoothly for an hour. Ready to review your repo and map out next steps.
$750 AUD in 7 days
5.4
5.4

Hello dear! I’m Md. Toriqul Islam, an experienced Flutter developer specializing in real-time communication systems, VoIP/PTT applications, map integrations, and mobile performance optimization with 10+ years of experience. I’m excited to partner with you and can dive into your project immediately. I understand you need to optimize your existing Flutter app’s push-to-talk voice pipeline, resolve iOS VoiceKit-related issues, reduce latency, improve audio quality, and enhance the navigation layer with richer maps, real-time traffic, closures, and live team tracking. I have worked on real-time communication apps, WebRTC-based systems, location tracking platforms, and advanced Mapbox/Google Maps integrations focused on reliability and performance. I have rich experience in low-latency mobile communication solutions. I am skilled in Flutter, Dart, WebRTC, VoIP, iOS/Android optimization, Mapbox, Google Maps, APIs, and real-time data streaming. Feel free to share additional details or ask questions. I’m happy to refine my approach to fit your needs. 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 AUD in 5 days
5.2
5.2

Hello I understand your requirement — your Flutter app already has working push-to-talk (PTT) voice and navigation. Still, you now want lower latency, better voice clarity, an iOS VoiceKit fix, and a richer real-time map with traffic, closures, and live tracking while keeping performance smooth on both iOS and Android. I can help you with this. I have worked on similar real-time Flutter apps, optimizing low-latency voice systems (VoIP/walkie-talkie style) by improving audio pipelines, codec handling, and buffering to enable faster, clearer communication. I’ve also enhanced map systems with real-time updates and optimized SDK performance to avoid lag and heavy resource usage. Quick question — which voice and map SDK are you currently using (WebRTC/Agora/custom, Google Maps/Mapbox)? This will help me suggest the best approach before starting.
$500 AUD in 7 days
5.5
5.5

Hello, Your project is a great match for my experience with Flutter, real time voice communication, and map based applications. I have worked on performance focused mobile apps involving live location tracking, audio streaming, and low latency communication where stability and responsiveness were critical. I can review the current PTT architecture, identify the iOS VoiceKit issue, optimize the audio flow, and improve voice quality and latency across different network conditions. I can also enhance the navigation experience with richer map data, live team tracking, and efficient update handling while keeping resource usage under control. I would love to schedule a short discussion to review the current codebase, understand the existing challenges, and outline a practical milestone plan for delivery. I will share my portfolio in chat I look forward to hear from you. Thanks Best Regards, Mughira
$500 AUD in 7 days
5.1
5.1

You already have the hard parts in place, which tells me this is less about adding features and more about tightening systems that are sensitive to milliseconds and resource usage. My first step would be profiling the existing Flutter voice pipeline to identify where latency is actually being introduced—codec choice, buffering strategy, VoiceKit integration on iOS, stream handling, or network recovery behavior. In walkie-talkie style apps, small edge cases around interruptions, route changes, and packet timing often create the “feels slow” problem even when average latency looks acceptable. On the mapping side, I’d review the current provider and refresh model before touching the UI. Richer cartography is straightforward, but keeping live traffic, closures, and team positions updating for an hour without drift requires careful subscription and cache management. I’d also reduce unnecessary redraws so detail increases without draining battery. I worked on real-time communication features in Flutter where network conditions varied heavily, so I’m comfortable tracking down issues that only appear outside ideal conditions. Before I dive in, are you currently using WebRTC underneath the PTT stack, and which map SDK is powering the navigation screen today?
$500 AUD in 7 days
4.8
4.8

✋ Hi There!!! ✋ The Goal of the project:- Enhance Flutter PTT voice performance and upgrade map system with real time, high detail navigation features. I carefully reviewed your need to refactor the voice pipeline for low latency PTT and enrich maps with real time updates while maintaining performance on mobile devices. I am a strong fit because I optimize real time systems with focus on speed, clarity, and stability. • PTT audio optimization with improved codec, buffering, and low latency streaming • Advanced map integration with real time updates, overlays, and efficient rendering • Clean Flutter module updates ensuring cross platform stability and performance I provide UI design support, database management, testing, and full source code delivery with documentation. With 9+ years as a full stack developer, I have worked on real time voice apps and map based mobile solutions with performance optimization. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$251 AUD in 11 days
5.0
5.0

Hello! I appreciate the opportunity to work on your Flutter app, particularly with the voice push-to-talk and navigation features. I understand the importance of optimizing the audio pipeline for smoother PTT exchanges and enhancing the map layer with real-time updates. With extensive experience in developing low-latency VoIP applications and refining streaming logic in Flutter and Dart, I am well-equipped to tackle the nuances of your project. My background includes optimizing codec selection, buffering, and echo suppression to achieve tighter performance, ensuring clarity in voice communications. To address your requirements, I propose the following approach: - Conduct a thorough review of the existing audio pipeline to identify and resolve latency issues, particularly with the iOS voice kit. - Refactor the streaming logic to improve efficiency and clarity while maintaining compatibility with your app's architecture. - Enhance the map layer using Mapbox or Google Maps, implementing richer cartography and real-time updates with a focus on resource efficiency. I am eager to begin this project and confident in delivering high-quality results that meet your expectations. I’m available for further discussion and ready to start immediately. Thank you!
$250 AUD in 7 days
4.6
4.6

Hi, The iOS PTT issue is almost certainly the AVAudioSession category not being set to .playAndRecord with .allowBluetooth before the stream opens, causing VoiceProcessingIO to initialize in the wrong mode and introducing the latency spike or cutoff you are seeing. On Android the equivalent culprit is usually AudioRecord not acquiring MODE_IN_COMMUNICATION early enough in the session lifecycle. For the audio refactor, we would replace any buffered streaming with a direct PCM pipeline using the Opus codec at 16kHz, add WebRTC-based echo suppression at the native layer via a Flutter platform channel, and tune jitter buffer thresholds to account for variable network conditions on mid-range devices. On the map side, we would integrate Mapbox GL with vector tile caching, layer live team positions and traffic overlays through a WebSocket feed refreshed at a 2-3 second interval, and throttle redraws using a debounce strategy to keep GPU and battery load flat during sustained sessions. Both modules would slot into your existing repo without restructuring your architecture, and we can have a working demo milestone ready for review within the first week. Best regards
$600 AUD in 12 days
4.7
4.7

Hello Your project is exactly the kind of challenge I enjoy working on. I have spent significant time optimizing real-time communication systems and location-based applications, so I understand how small delays, buffering issues, or inefficient map updates can impact the user experience. For navigation, I can enhance the map experience with richer map layers, real-time traffic updates, team member tracking, and efficient data refresh strategies while keeping performance smooth on both iOS and Android. I am comfortable working within existing architectures and can deliver clean, production-ready Flutter modules with measurable improvements in voice performance and map functionality. I'd be happy to review the repository and discuss the milestone plan. Best regards, Ravinder
$600 AUD in 7 days
4.4
4.4

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