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I am looking for an experienced Android developer to build a GPS plotter and tracker application for marine/boating use in the Seychelles (Indian Ocean). The app will be installed and used primarily on a Samsung Galaxy S25 Ultra and must work fully OFFLINE at sea, where there is no mobile data coverage. KEY FEATURES REQUIRED 1. Live GPS position plotting on a map of Seychelles waters (Mahé, Praslin, La Digue and surrounding banks/reefs), with lat/long display in degrees-minutes format. 2. Offline maps/charts — the app must cache or bundle map tiles (e.g. OpenStreetMap / OpenSeaMap or similar) so it works with zero internet connection. 3. Waypoint management — create, name, edit, delete and categorise waypoints (e.g. fishing spots, reefs, hazards), with icons and colour coding. 4. Track recording — record my route (breadcrumb trail) with time, speed and distance; save, replay and export tracks. 5. Navigation to waypoint — bearing, distance, ETA and course-over-ground to a selected waypoint, with off-course indication. 6. Speed and heading display — large, sunlight-readable data fields (speed over ground in knots, heading, trip distance). 7. Import/export — waypoints and tracks in GPX format (compatible with Garmin units). 8. Anchor alarm — alert if the boat drifts beyond a set radius. 9. MOB (man overboard) button — instantly drops a waypoint and navigates back to it. 10. Day/night display modes and a simple, glove-friendly interface for use on a moving boat.
Project ID: 40507014
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130 freelancers are bidding on average $640 USD for this job

Hello, i am an Android expert and i can develop Android app for you. Regarding your project i would like to discuss features of app’s in detail. i am a native Android applications developer with over 8 years of experience developing Android mobile applications. I have completed more than 515 projects. I am confident that I will provide you with quality work and the best software services. Let's chat to proceed.
$3,500 USD in 30 days
8.9
8.9

I HAVE PREVIOUSLY WORKED ON GPS TRACKING, OFFLINE NAVIGATION, GEOLOCATION, AND FIELD-OPERATIONS APPLICATIONS WHERE RELIABLE PERFORMANCE WITHOUT INTERNET CONNECTIVITY WAS THE MOST CRITICAL REQUIREMENT. What stands out in your project is that this is not a standard GPS app—it is a dedicated marine navigation companion designed for real-world boating conditions around the Seychelles. My approach would focus first on reliability offshore, ensuring that every critical feature continues to function flawlessly even with zero network coverage. I would build the application natively for Android and optimize it specifically for the Samsung Galaxy S25 Ultra, using fully offline map/chart storage with preloaded Seychelles waters, reefs, and surrounding banks. The navigation engine would continuously process GPS coordinates, heading, speed-over-ground, bearing calculations, route recording, and waypoint management locally on the device without requiring cloud services. Thansk christian
$250 USD in 7 days
8.3
8.3

Hello, I've reviewed your requirements for the Android marine plotter. The system's core operation is a self-contained, offline navigation tool running on a Samsung device. At sea, it will leverage the phone's internal GPS to plot a real-time position on pre-loaded Seychelles marine charts. The user will be able to manage a local database of waypoints (fishing spots, hazards) and record their vessel's track. All critical navigation data-speed, heading, distance to waypoint-will be calculated and displayed on-device without any need for a mobile signal. Data like tracks and waypoints can then be exported via GPX for use on other systems. Technical approach: We'll build this as a native Android app in Kotlin for maximum performance and GPS hardware access. For mapping, we can use osmdroid or a similar library, bundling the Seychelles map tiles directly into the app for guaranteed offline access. All waypoints and tracks will be stored locally in a robust SQLite database using the Room Persistence Library. GPS data will be handled via FusedLocationProviderClient for accuracy, and a proven library will manage GPX parsing and generation. Core modules: - Offline Map Engine: Manages tile caching/bundling and renders the user's position, tracks, and waypoints. - GPS Navigation Processor: Handles live GPS input to calculate speed over ground, course, and navigational metrics (bearing, ETA) to a selected waypoint. - Waypoint & Track Manager: Full CRUD functionality for points of interest and recorded routes, including the import/export logic for GPX files. - Alerting System: Implements geofencing for the anchor alarm and the one-touch MOB waypoint drop/navigation function. Relevant systems: - Road Rage (APK available): A GPS navigation app we built that monitors and displays real-time driving dynamics like speed and behavior, demonstrating our experience with location-based services. - ThoughtIn (Logistics App): This application was designed with an offline-first architecture, allowing drivers to manage data without an internet connection and sync later, proving our capability in building reliable offline systems. Our implementation strategy is to first build the MVP with offline map rendering and live GPS plotting. We will then layer on waypoint management, track recording, and navigation functions. The final stage will involve adding the anchor/MOB alarms and refining the UI for at-sea usability and sunlight legibility. Rigorous testing will use both simulated and real-world location data. Regards, Rohit
$250 USD in 35 days
8.1
8.1

Hi, the whole thing hinges on working with zero signal at sea, so I'd start with the offline maps and GPS plotting. Quick thing, do you want the Seychelles charts bundled in from the start, or downloaded once over wifi then cached? I'd build it native for the S25 Ultra with OpenSeaMap tiles cached locally, so the map, your position, waypoints and track recording all work fully offline. GPX import/export keeps it working with your Garmin. The anchor alarm and MOB button I'd build and test carefully, since those have to fire every time. Looking forward to hearing back from you soon. Thanks!
$3,500 USD in 25 days
6.6
6.6

Hi, I can build your offline Android marine GPS plotter for Seychelles with live position mapping, bundled charts, waypoint management, GPX import/export, track recording, waypoint navigation, anchor alarm, MOB, and day/night modes. I have experience developing GPS/navigation apps with offline map tiles, Android location services, GPX handling, route tracking, bearing/distance/ETA calculations, alert logic, and rugged mobile UI design. I will optimize the app for Samsung Galaxy S25 Ultra, create a glove-friendly marine interface, test offline operation, and ensure all core navigation features work reliably without mobile data. Q1: Do you prefer OpenSeaMap/OSM tiles or do you have marine chart data? Q2: Should the app be private APK only or published on Google Play? Q3: What map zoom area around Seychelles should be bundled? Best regards.
$500 USD in 7 days
6.6
6.6

Hello, I hope you are doing well. I understand that you are looking to build an Android GPS Marine Plotter & Tracker App for Seychelles Waters, and I would be happy to help. I have extensive experience in designing and developing applications and have successfully delivered many projects. What I offer: -Development using the latest technologies -Daily project updates and clear communication -On-time delivery within the agreed timeline -Complete source code provided after project completion -One year of support for the developed work -10+ years of experience in web and app development -Fully responsive, fast-loading, and SEO-friendly design -A powerful super admin panel to manage the entire system Please feel free to initiate a chat so we can discuss your requirements in detail. Thank you and regards, Dheeraj K.
$250 USD in 7 days
7.0
7.0

With over 120 IOS & Android apps developed and deployed for large enterprises and medium businesses. I don’t just build what you need. I will provide you with a premium UI/UX and a world class app flow that ensures your app has the ingredients for a successful Revenue generating Business
$800 USD in 10 days
6.5
6.5

Hi, this is Paul from Canada. I understand you need an offline-first Android marine GPS tracker for boating use in Seychelles, with live GPS plotting, offline OpenStreetMap/OpenSeaMap charts, waypoint management, track recording, navigation (bearing/ETA), GPX import/export, anchor alarm, and MOB functionality, all optimized for a Samsung Galaxy S25 Ultra with a simple glove-friendly UI. I have experience building Android apps using Java, Android SDK, GPS/geolocation APIs, and offline map solutions (Mapbox/OSMDroid-style tile caching), including real-time tracking, route recording, and navigation features with persistent local storage and GPX handling. Do you already have a preferred offline map source (e.g. OSM tiles, OpenSeaMap, or Mapbox offline packs), and should the app support true vector navigation charts or raster tile caching only? I can design a reliable offline architecture with background GPS tracking, low battery usage at sea, and accurate navigation features including anchor drift detection and MOB return navigation. Looking forward to discussing further. Paul
$500 USD in 7 days
6.2
6.2

Hi, I’d be glad to help build your offline marine GPS plotter and tracker for the Seychelles. I have experience developing Android apps that rely on accurate GPS, clear navigation data, and robust offline functionality, which is essential for boating use where connectivity disappears at sea. I can create a clean, glove-friendly interface with live position plotting, waypoint and track management, GPX import/export, anchor alarm, MOB support, and large, sunlight-readable displays for speed, heading, distance, and bearing. I’ll also ensure the app works reliably on the Galaxy S25 Ultra with cached or bundled map data for Mahé, Praslin, La Digue, and surrounding waters. Do you already have a preferred map source or chart style, such as OpenStreetMap/OpenSeaMap? Would you like the app to support custom waypoint icons and categories from the start? I’d be happy to discuss the best approach for your workflow and requirements.
$400 USD in 7 days
5.7
5.7

⭐⭐⭐⭐⭐ Build a GPS Plotter & Tracker App for Marine Use ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see you are looking for an experienced Android developer to create a GPS plotter and tracker app for marine use in Seychelles. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for Android applications. I will ensure the app works fully offline, with all required features integrated efficiently within your budget. ➡️ Why Me? I can easily build your GPS plotter and tracker app as I have 5 years of experience in Android development, specializing in offline applications, GPS integration, and user-friendly interfaces. My expertise includes map integration, waypoint management, and track recording. Additionally, I have a strong grip on relevant technologies, ensuring a smooth and effective development process. ➡️ Let's have a quick chat to discuss your project in detail, and I can show you samples of my previous work. I look forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ Android Development ✅ GPS Integration ✅ Offline Functionality ✅ Map Integration ✅ User Interface Design ✅ Waypoint Management ✅ Track Recording ✅ Data Export/Import ✅ Alarm Systems ✅ Navigation Features ✅ Java/Kotlin Programming ✅ Testing & Debugging Waiting for your response! Best Regards, Zohaib
$350 USD in 2 days
6.0
6.0

Hello, Your project is a great fit for my experience in GPS based mobile applications, offline mapping, location tracking, and navigation systems. I understand the importance of reliability when operating at sea, especially in environments where there is no internet connectivity. I can develop an Android application that supports offline charts, waypoint management, track recording, navigation guidance, GPX import and export, anchor alarms, and emergency MOB functionality while keeping the interface clear and easy to use in marine conditions. Special attention will be given to battery efficiency, GPS accuracy, and usability on the Samsung Galaxy S25 Ultra. I would love to schedule a short discussion to review your navigation workflow and chart preferences. I am confident we can deliver a dependable solution that meets your boating requirements in Seychelles waters. I will share my portfolio in chat I look forward to hear from you. Thanks Best Regards, Mughira
$500 USD in 7 days
5.1
5.1

Hello! What stood out to me is that you're essentially looking for a dedicated marine navigation companion rather than a typical GPS app. Features like offline charting, waypoint management, track recording, anchor alarms, MOB functionality, GPX compatibility, and navigation guidance all need to work together in a way that remains simple and readable while out on the water. I've worked on location based applications and understand how important offline functionality, battery efficiency, GPS accuracy, and a clear user experience become in environments where connectivity cannot be relied upon. The Samsung S25 Ultra also provides a strong hardware platform for handling high accuracy GPS tracking, map rendering, and navigation workflows. I'd be interested in learning more about how you currently navigate and track routes around Seychelles waters so the application can be tailored to real world usage rather than generic mapping workflows. Best regards, Nikita Gupta.
$300 USD in 18 days
5.3
5.3

Hello, Mohammad here, senior mobile and web app solution developer with 18+ years of experience. I reviewed your requirements and my preferred tech stack is Kotlin, Android GPS/GNSS APIs, and MapLibre/Mapsforge with offline MBTiles support. Based on the high-level specifications provided, I estimate 300–350 engineering hours to design, develop, test, and deploy the application. All requested features, including offline GPS tracking, waypoint management, track recording, navigation, anchor alarm, MOB, GPX import/export, and day/night modes, are fully achievable on Android. For maps, OpenStreetMap/OpenSeaMap offers lower cost and full offline capability but lacks official marine chart accuracy. Licensed marine charts provide better depth, reef, and hazard data but introduce licensing costs and restrictions. We can discuss the most suitable option based on your operational needs. I offer all clients FREE 30 days technical support after launch. Should you need any info please feel free to contact me. I look forward to hearing from you. Best, Mohammad
$450 USD in 2 days
4.8
4.8

Hello, Experienced Android developer with expertise in GPS navigation systems, offline mapping, marine tracking applications, and geospatial data processing I can develop a fully offline marine navigation app for Samsung Galaxy S25 Ultra featuring GPS plotting, offline Seychelles charts, waypoint management, track recording, navigation tools, anchor alarm, and MOB emergency functionality The application will support GPX import and export, real-time speed and heading display, breadcrumb tracking, bearing and ETA calculations, and a glove-friendly interface optimized for bright marine environments Strong focus will be placed on GPS accuracy, battery efficiency, offline reliability, and smooth operation without any mobile data connection while at sea Delivery includes complete Android source code, documentation, testing support, and a production-ready build designed specifically for marine and boating use in Seychelles waters.
$500 USD in 15 days
4.9
4.9

Hello, I am Haseeb, a Full Stack Developer and AI Solutions Architect with expertise in Android App Development. I have reviewed your project description for the Android GPS Marine Plotter & Tracker App for Seychelles Waters. I am confident in delivering a professional solution that includes live GPS position plotting, offline maps/charts, waypoint management, track recording, navigation features, import/export functionalities, anchor alarm, MOB button, and intuitive interface design. You can view my portfolio here: https://www.freelancer.com/u/haseebsidd07 I would love to discuss your project further in chat to ensure we create the perfect app for your needs. Best regards, Haseeb.
$500 USD in 7 days
4.5
4.5

I understand you need a robust offline Android GPS plotter for Seychelles waters, similar to how maritime navigation apps leverage detailed charting for critical operations. My experience building offline mapping solutions for remote environments directly addresses this requirement. My approach will utilize the powerful Mapbox SDK for Android, allowing for highly performant offline tile caching of OpenSeaMap data tailored to the Seychelles region. I'll implement precise GPS location tracking with a custom overlay for displaying lat/long in degrees-minutes, ensuring seamless functionality without a data connection. The application will be optimized for the Samsung Galaxy S25 Ultra's hardware capabilities. To ensure we meet your exact needs, what are your specific requirements for map zoom levels and detail, and do you have any preferred formats for exporting track logs? I'm eager to discuss how we can bring this project to life for you.
$601 USD in 21 days
4.2
4.2

Hi, I am currently available for full-time work and can start immediately. I have gone through your Android GPS Marine Plotter & Tracker App requirements and I can confidently build a reliable offline navigation solution for marine use in Seychelles waters. I have experience in Android development with GPS tracking, offline map integration, geolocation services, and real-time navigation features. I understand the importance of offline functionality in marine environments, so I will implement a fully cached/offline map system (OpenStreetMap/OpenSeaMap) with smooth performance even without internet connectivity. I can develop all required features including live GPS plotting, waypoint management, track recording and replay, GPX import/export, navigation to waypoint with bearing and distance, anchor alarm, MOB function, and clear speed/heading display optimized for sunlight visibility and glove-friendly use. The app will be built with a clean and stable architecture using Android (Java/Kotlin), ensuring high performance on Samsung S25 Ultra. I will also focus on UI simplicity for real-world boating conditions with day/night modes and quick-access controls. Looking forward to working with you. Best Regards Thanks
$250 USD in 7 days
3.8
3.8

Hey, I can start now. ✅ I’ve worked on something very similar. Navigating marine apps offline is challenging due to limited data coverage at sea. What really matters here is ensuring seamless functionality without internet dependency. I recently developed an offline GPS tracking app for hiking in remote areas, which required caching map tiles for offline use. While not specifically marine-focused, the technical approach aligns closely with the requirements for this project. Let's chat! -Dorofii
$570 USD in 3 days
4.0
4.0

With a project as intricate as developing an Android GPS Marine Plotter & Tracker application, it's crucial to have a developer who is not only proficient in the required technologies – Android, Android App Development, Android SDK – but one who can also deliver under unique constraints. Having developed apps in offline ecosystems before and for the likes of Samsung S25 Ultra- I believe I bring the right skill set and experience to tackle this project effectively. Paper Perfect, my freelance development team, is known for its dedication to bringing clients' visions to life while ensuring robust and user-friendly products. This project entails working offline on sea while ensuring accurate live GPS plotting, offline charts, way-point management, track recording/navigation, anchoring alarm, MOB button- all of which we've successfully implemented in our previous projects. Additionally, having developed applications for both Android and iOS platforms using recent frameworks like Flutter and React Native, you can be sure that my team is always on the lookout for new ways to elevate digital experiences. I truly understand the value of a job well-done and guarantee an on-time delivery of an app that will exceed your expectations
$500 USD in 7 days
3.5
3.5

Marine GPS tracker app is not a normal Android project—it needs true offline map handling, low-power GPS tracking, and marine navigation logic that stays stable without internet at sea. Best approach is native Android (Kotlin) with offline map engine (Mapbox offline or OpenSeaMap + custom tile caching), GPS foreground service, and GPX import/export layer. This ensures smooth tracking, waypoint management, anchor alarm, MOB, and navigation even with zero connectivity. UI should be simplified for sunlight use—large speed/heading display, glove-friendly controls, and fast response under movement conditions. Before design starts, do you want full OpenSeaMap nautical detail or standard OSM-based offline maps for MVP?
$250 USD in 1 day
3.3
3.3

St LOUIS, Seychelles
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