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I’m ready to move from idea to working product on a cross-platform mobile app that helps owners reunite with their lost pets and then grows into a revenue-generating marketplace for pet-related businesses. The first release needs to ship on both iOS and Android with a single codebase if possible. Core user flow • An owner creates a pet profile with photos and vital details. • When a pet goes missing, the app records the last known location and shows it on an interactive map while sending push notification alerts to nearby users. • In-app messaging lets finders and owners talk securely without revealing personal contact information. Monetisation roadmap Alongside the lost-and-found functionality, I want a built-in marketplace where groomers, vets, shelters and other pet services can advertise listings or special offers. Think of it as a native ad slot and storefront that can expand over time. Key deliverables • Native-feeling apps for iOS and Android (React Native, Flutter or similar is fine) • Real-time location tracking and push notifications • Secure chat with image support • Marketplace module with basic product or service listings and payment placeholder • Admin console to moderate content and manage business adverts • Clean, scalable backend (Firebase, AWS Amplify, or your preferred stack) • Full source code, build instructions and brief documentation Acceptance criteria 1. A tester can publish a lost pet alert and see it appear on another device within 10 seconds. 2. Messages between two users arrive in under 5 seconds and are stored securely. 3. Marketplace listings load in under 2 seconds on a 4G connection. 4. App passes App Store and Google Play submission checks with no critical issues. If you have proven experience with location-based apps, real-time chat or marketplace builds, I’d love to see your portfolio and discuss your proposed tech stack and timeline.
Project ID: 40601283
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235 freelancers are bidding on average $219 USD for this job

Hi, This project is best approached as two connected products sharing one core: a fast lost-pet rescue flow now, with a marketplace layer that can scale later without reworking the app. The key is choosing an architecture that supports map updates, near-real-time alerts, secure chat, and moderated listings from the start. I’d begin with the MVP: pet profiles, lost alert creation, map/location events, push notifications, and secure in-app messaging. Then I’d add the marketplace module in a lightweight way so it can expand later into storefront and payment features. I also keep App Store and Google Play requirements in mind early so the first release is submission-ready. Relevant experience and initial focus: - Cross-platform app structure - Pet profile and lost alert flow - Map and nearby notification logic - Secure chat with image support - Marketplace listings and admin moderation One question: should nearby alerts be triggered by the user’s current GPS location, a saved home-area radius, or both?
$147 USD in 5 days
9.5
9.5

Hello, Regarding your Lost Pet Finder project, i would like to discuss the app features in detail to better understand your requirements. i am a mobile applications developer and i have more than 8 years of experience developing mobile applications with backend services. i have developed many Business Solutions from scratch to Stores ready applications. i have completed more than 550 projects. i have live sample apps for you. i am super confident i will provide you best quality software services on time and on budget. Let's chat to proceed.
$600 USD in 15 days
8.9
8.9

Hello, I understand you’re looking for a real working product, not just a prototype, and the critical part is making the lost-pet alert, map updates, and messaging feel instant and reliable across both iOS and Android. I can build this with a single cross-platform codebase using Flutter, backed by Firebase for real-time location updates, push notifications, secure chat, and scalable backend services. The architecture will be designed so the marketplace module can grow from basic business listings into a full pet-services ecosystem without rebuilding the core app later. The first release would include pet profiles, lost-pet alerts with interactive maps, nearby push notifications, secure in-app messaging with image sharing, marketplace listings, and an admin console for moderation and advert management. I’ve worked on real-time mobile applications involving location tracking, notifications, chat systems, and scalable backend integrations, and I can deliver full source code, deployment support, and documentation for App Store and Google Play submission. I’d be happy to discuss the MVP scope, timeline, and the fastest path to launching the first production version. Best regards, Christina
$140 USD in 7 days
8.4
8.4

Hello, Greetings Hope you are doing well. I am a Mobile Application developer with over 5 years of experience. I am confident in my ability and skills to develop high-quality Mobile apps and would like to work on your lost pet finder app project. I will complete the work as per your requirements. I want to discuss more this project to prepare the final concept. So let’s discuss this in detail over chat then will make plans to start work on it. Waiting for your earliest reply. Thanks. Shubham
$125 USD in 12 days
8.0
8.0

Hi, I understand you need a cross-platform mobile app that combines lost pet recovery, real-time communication, location tracking, and a future-ready pet services marketplace, and I can help you turn this idea into a scalable working product. I can build a native-feeling iOS and Android application using React Native or Flutter with a strong backend architecture. The app will include pet profiles, lost pet alerts, interactive maps with location tracking, nearby user notifications, secure in-app messaging with image support, and a marketplace module for pet businesses with listing management and future monetization options. I will focus on creating a reliable and scalable system with real-time features, secure data handling, push notifications, and a clean user experience. I can also develop the admin console for managing users, reports, listings, and business advertisements while providing complete source code, deployment support, and documentation. Please check out my profile to review my past projects and portfolio: https://www.freelancer.com/u/Hammadhassan21 I am available to discuss your idea, proposed tech stack, and timeline. Ping me with the details, and we can plan the next steps to get started. Thanks.
$250 USD in 7 days
7.3
7.3

I can help with this, Hi, I will deliver your lost pet finder app in Flutter with Firebase: pet profiles, interactive map with last known location, push alerts to nearby users, secure chat with image support, and the marketplace module for vets, groomers, and shelters. I will also build the admin console for content moderation. On a similar location based app, using geohash queries for the proximity alerts kept notification delivery well under 10 seconds. I will apply the same approach here. Questions: 1) Do you have a preferred payment provider for the marketplace placeholder (Stripe, RevenueCat)? 2) Will pet profiles need breed specific fields, or is it freeform text plus photos at launch? Share any wireframes or sketches and I will map out the full screen list tonight. Ready to start whenever you are. Kamran
$90 USD in 5 days
7.6
7.6

Hello, I have 10 years of experience building cross-platform mobile applications, real-time platforms, and marketplace solutions using React Native, Node.js, PostgreSQL, REST APIs, AI integrations, and cloud deployment. For this project, I recommend React Native with Node.js, PostgreSQL, Firebase Cloud Messaging, and cloud services for real-time notifications, secure chat, and location-based features, providing excellent scalability and long-term flexibility. I would develop a responsive app with secure authentication, optimized location tracking, interactive maps, real-time messaging with image support, a modular marketplace, and a robust admin panel. My approach emphasizes clean architecture, secure coding, API-driven development, performance optimization, and maintainable code to support future monetization and feature expansion. I can also share relevant marketplace and location-based projects and discuss the best roadmap, timeline, and architecture for your product. Best regards
$140 USD in 7 days
7.0
7.0

Hi! I understand you need a cross-platform mobile app that starts with a lost pet recovery system and can later grow into a complete pet services marketplace. I can help you build a scalable solution with a single codebase for iOS and Android, including pet profiles, location tracking, alerts, secure messaging, and marketplace functionality. For this type of app, I would suggest using React Native or Flutter with a reliable backend like Firebase/AWS to handle real-time updates, push notifications, chat, storage, and future scalability. I can also build the admin panel for managing users, reports, and business listings while keeping the architecture ready for future monetization features. I have experience working on mobile apps with real-time features, APIs, dashboards, and scalable backend systems. I can provide complete source code, setup instructions, and documentation so everything is easy to maintain. You can check my previous work here: https://www.freelancer.com/u/zainalitariq245 Let's connect via chat so we can discuss the scope, suggest the best tech stack, and plan the development timeline. I'm waiting for your response. Thanks.
$250 USD in 7 days
6.4
6.4

Hello, I will develop your LOST PET FINDER MOBILE APPLICATION for Android and IOS both platforms with Web admin panel. I am Tulsiram. I have 10 years of experience working as Native and Crossplatform mobile application developer. I am understood your requirements. I am glad if we are working together. If you interested then let's connect. I will provide you Daily updates ,source code after development completed, 1 Year maintenance Support in following Steps: I will available daily 10-12 hours in Working days for you. I will provide you regular updates according to which modules we will decided. After approval each module by you then i will provide your complete source code of your project and will shift on your Domain. Thanks
$120 USD in 10 days
6.6
6.6

Hello, Your vision of building a location-based Lost Pet Finder app with future marketplace capabilities aligns perfectly with the expertise of Doomshell Software Pvt. Ltd. We specialize in developing scalable cross-platform mobile applications with real-time features and secure backend architectures. We can help you with: ✔ Flutter/React Native app for Android & iOS ✔ Pet profiles and lost pet reporting ✔ Real-time GPS tracking and Google Maps integration ✔ Push notifications for nearby users ✔ Secure in-app chat with image sharing ✔ Marketplace for pet businesses ✔ Admin dashboard and backend development ✔ Firebase/AWS integration, testing, deployment, and post-launch support Our approach: • Design an intuitive user experience • Build a scalable backend with real-time capabilities • Ensure secure communication and high performance • Deliver production-ready apps with complete documentation Quick Question: • Do you already have wireframes or would you like us to design the complete UI/UX before development? Regards,
$240 USD in 7 days
6.3
6.3

Hello!! You need a cross platform lost pet finder application with real time location tracking, push notifications, secure messaging, marketplace features, and a scalable backend, and I can build a reliable mobile solution that helps users reconnect with their pets while supporting future business growth. Would love to discuss your idea in chat and share similar mobile applications involving real time features and scalable platforms. Having completed similar mobile and business applications, every solution is designed with smooth performance, secure data handling, and a simple user experience. Experience with React Native, Flutter, backend integration, location services, notifications, chat systems, and marketplace modules helps create applications that are reliable and ready for future expansion. Clean architecture, regular updates, and proper testing ensure the final product meets quality standards across both iOS and Android. Looking forward to working together and bringing this meaningful pet care platform to life. Best regards Farhin B
$101 USD in 10 days
6.6
6.6

Hi I understand you are looking for hands-on development of a cross-platform Lost Pet Finder app that ships as a single codebase for iOS and Android, with a lost-pet flow (photos + details, last known location on a map, and nearby push alerts), plus secure in-app messaging, and an admin-moderated marketplace module that can evolve into a revenue channel. I focus on building location-aware, real-time user experiences and then backing them with a clean, scalable backend so your acceptance criteria are testable (alert propagation, message delivery latency, marketplace load performance, and app store readiness). My approach is structured: define the data model and security boundaries first, then implement the user flows with production-grade patterns rather than prototypes that break at scale. For delivery, I’d break work into milestones: core app UX and pet onboarding, lost alert creation + map + geofenced/nearby notification dispatch, secure chat (including image upload and message persistence), marketplace (listings/offers with fast reads) and admin console for moderation. I’ll include working setup and build instructions plus brief documentation tied to the exact screens and APIs you’ll need to test and iterate. Best, Justin
$140 USD in 7 days
6.1
6.1

Greetings, I understand the essence of your project for developing a Lost Pet Finder App that not only aids in reuniting lost pets with their owners but also evolves into a revenue-generating platform for pet-related businesses. The primary goal is to deliver a seamless cross-platform mobile app solution catering to both iOS and Android users with a unified codebase. My approach involves structured requirement confirmation, controlled planning, clean implementation, rigorous testing, and milestone-based transparency to ensure the successful execution of the project. With a robust background in Mobile App Development, Android, Backend Development, Flutter, iPhone, and Objective C, I am well-equipped to deliver long-term, reliable results. You can view my portfolio here: ⭐⭐ https://www.freelancer.com/u/CodeAnchors ⭐⭐ Could you please provide insights into your top priority or key business objective for this project? Let's initiate a chat to finalize the project scope smoothly. Best regards, Muhammad Anas Khan
$90 USD in 4 days
5.8
5.8

The biggest thing to get right here is the real-time flow between location updates, nearby push notifications, and secure messaging—if those aren't coordinated well, the app won't meet the 10-second and 5-second acceptance targets even if each feature works on its own. I'd build the first release around a single cross-platform codebase, keeping the lost-pet workflow as the foundation while structuring the marketplace as a separate module so it can grow without affecting the core experience. For the map and alerts, I'd make sure location changes trigger only relevant nearby notifications rather than unnecessary broadcasts, and I'd store chat separately from public pet data so conversations remain private while supporting image messages. The admin console would be designed around content moderation from day one. One question: should the marketplace support purchases in the first release, or is the payment placeholder only for future expansion?
$140 USD in 7 days
5.7
5.7

Hello, this is really two systems in one: a real-time location and messaging product first, then a moderated local marketplace layered on top. The real engineering risk is not the UI; it is keeping alert fanout, chat delivery, and geo-based state consistent enough to meet the 5–10 second acceptance targets under mobile network variability. I’ve built several production systems where the hard part was separating realtime transport, application logic, and admin control so the product could evolve without rewrites. The closest examples here are Enterprise ProxyTool Client App for marketplace/control-plane architecture and Dent-Cloud for near-real-time data flow and production SaaS behavior. I usually structure this as distinct services for identity and pet profiles, alerting and geospatial matching, messaging, marketplace, and moderation. If you use AWS Amplify, I’d still recommend keeping the domain boundaries explicit so chat, alerts, and listings can scale independently. For reliability, I’d pay close attention to notification fanout rules, message persistence and retry behavior, image upload paths, and moderation workflows before adding payment logic. This should be designed as a long-term production system, not a one-off MVP that collapses when the marketplace grows. If useful, I can sketch the v1 architecture around alert propagation, secure chat, and admin moderation boundaries. Clifton
$140 USD in 7 days
5.6
5.6

Hello There! I’m Md. Toriqul Islam, and I’m excited to partner with you. I can dive into your project immediately. I have 10+ years of experience in mobile app development, real-time applications, and scalable backend systems. I understand you need a cross-platform app for lost pets with real-time location tracking, push notifications, secure chat, and a scalable marketplace. I can build it using Flutter or React Native with Firebase or AWS for fast, secure, and future-ready performance. I am skilled in Flutter, React Native, Firebase, Node.js, REST APIs, Real-Time Chat, Google Maps, Push Notifications, and Mobile App Development. I’m ready to discuss the best tech stack, timeline, and roadmap for your MVP. Looking forward to hearing from you. Best regards, Md. Toriqul Islam
$100 USD in 3 days
5.5
5.5

Hi, I recently developed a location-based mobile platform featuring real-time GPS tracking, push notifications, secure in-app messaging, role-based user management, and a scalable backend. The architecture was built for high performance and future expansion, making it ideal for community and marketplace applications. I can build your lost pet platform using Flutter with Firebase (Firestore, Authentication, Cloud Messaging, and Storage) to deliver a seamless experience on both iOS and Android. The app will include pet profiles, live lost-pet alerts with interactive maps, secure image messaging, a scalable marketplace for pet businesses, and an admin dashboard, all designed for fast performance and future feature growth. One question: Would you like the marketplace to support online payments in the first release, or should it initially focus on business listings with payment integration added in a later phase? Looking forward to working with you! Thanks, InvokeTech
$140 USD in 7 days
5.6
5.6

I understand the flow: pet profiles with photos, a lost-pet alert that pins location on a live map and pushes to nearby users, secure in-app chat that hides personal contact info, and a marketplace layer for groomers/vets/shelters to list services and ads — all backed by an admin console. How I'll build it: Flutter — single codebase, native feel on iOS & Android. Firestore + Cloud Functions for real-time data: lost-pet alerts propagate to nearby devices via geohashing/location queries, meeting your <10s alert criteria. FCM push notifications targeted by proximity. Secure chat module (Firestore subcollections, image support, no contact-info leakage) — I've built this exact pattern before for a two-sided marketplace app, hitting sub-5s delivery. Marketplace module: business listings, ad slots, storefronts, with Stripe/Stripe Connect payment placeholder ready to activate. Admin console: content moderation, business advert management, user reports — tabbed dashboard style. Performance-tuned queries/caching so marketplace listings load fast even on 4G. Why me: 6+ years Flutter Team Lead, 10+ live apps shipped end-to-end. Directly relevant: a group-chat/social app with real-time messaging and admin moderation dashboard (crew verification, ban system, analytics), and a two-sided marketplace app with Stripe Connect escrow, real-time chat, and guest mode. Both went through full App Store/Play Store submission, including rejection handling.
$140 USD in 7 days
6.3
6.3

Hi, I can build the lost pet alerts around real-time location sharing and push notifications, which is a common pattern in delivery or ride-sharing apps. I once built a similar React Native app for local food delivery with Firebase, where we handled live location updates and chat—taking around 6 weeks to stabilize the real-time features. I'd approach this using Firebase for the backend because it keeps the system simple and scales well without over-engineering, while the biggest improvement will come from carefully managing the push notification triggers based on location changes. I keep changes in small, isolated commits and test them thoroughly before merging to avoid breaking existing functionality. The goal is to create a system that not only reunites pets quickly but is also easy to maintain and expand for the marketplace later. If we're aligned, I'd be happy to discuss the stack and timeline. I can start right now. Thanks, Denis.
$150 USD in 2 days
5.4
5.4

My name is SUNIL and my full-stack development team specializes in solving complex problems through scalable, high-quality software. Your Lost Pet Finder App project aligns perfectly with our core expertise, especially given your emphasis on location-based functionality, real-time chat, and marketplace builds. I have extensive experience in the same. I have successfully built applications using React Native and Flutter, including real-time location tracking features, push notifications, and secure in-app messaging – all of which are crucial components for your project. Additionally, I've integrated various payment gateways and third-party systems- a skill that will prove valuable for implementing the market place module you're seeking. We also have profound knowledge and experience managing backend solutions using Firebase or AWS Amplify - we can work with either framework or whichever stack you prefer!
$30 USD in 1 day
5.3
5.3

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