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I already have the full Android source code; what I now need is a reliable build that focuses on seamless data synchronization. The application must install and run smoothly on both phones and tablets, retaining the existing UI while guaranteeing that every record created or edited offline is synced accurately the moment a connection is available. Your task is to review the current codebase, optimise (or rewrite, if required) the sync logic, compile the APK, and provide a clean, reproducible build process so future releases are effortless. Retrofit and Room are already included—feel free to keep them or suggest more efficient libraries as long as the final result remains lightweight and dependable. Please share past work that proves you have tackled similar sync-centric projects. A short note explaining how you would approach conflict resolution and background syncing will help me understand your workflow. Deliverables • Signed, install-ready APK for phones and tablets • Updated and well-commented source code in a Git repo (or ZIP) • One-page setup/build guide so the project can be rebuilt without surprises Acceptance criteria: the APK installs on Android 8.0+ devices, completes full two-way sync on first run, and performs incremental background sync within 30 seconds of connectivity being restored, all without crashes or data loss.
ID Projek: 40389919
20 cadangan
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Aktif 18 hari yang lalu
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Hi, I can take your existing Android codebase, harden the offline-to-online sync flow, produce a reliable APK build for phones and tablets, and leave you with a clean rebuild process for future releases. I have commercial Android experience and strong hands-on work in Kotlin, debugging, feature delivery, and existing codebase improvement; one relevant example is an offline Android transport app I built with structured local data handling and background processing. For sync, I’d keep Room as the local source of truth, queue offline changes for replay, use WorkManager for background retries on connectivity return, and apply deterministic conflict rules so records sync safely without duplication or data loss. My profile here is newer, so I’m pricing early projects competitively, but the technical side is backed by real development experience.
₹600 INR dalam 7 hari
0.0
0.0
20 pekerja bebas membida secara purata ₹1,831 INR untuk pekerjaan ini

I’m an experienced Android developer with strong expertise in offline-first apps and data synchronization using Room and Retrofit, and I can optimize your existing codebase to ensure reliable two-way sync with proper conflict resolution and background processing. I’ll review and refine the sync logic to guarantee that offline changes are safely queued and synced within seconds of connectivity, while keeping the app stable across phones and tablets. You’ll receive a signed APK, clean and well-documented source code, and a simple build guide for future releases.
₹1,050 INR dalam 1 hari
5.6
5.6

Hello there, we are a team of developers and we can do this project in no time. Thanks Ashish Kumar from Coding jobs On-line.
₹5,000 INR dalam 7 hari
5.2
5.2

With over a decade of experience as a Full Stack Developer, I am confident in my ability to tackle your Data-Sync APK build project effectively. Innumerable projects from my portfolio have demanded not only technical expertise but also a keen eye for optimization with minimal data loss, which I believe aligns perfectly with your requirements. My deep knowledge of Android development, API Development and Database Management enables me to expertly review your existing codebase, optimize or rewrite the sync logic and compile the APK. From my past work, I have hands-on experience with Retrofit and Room that will come in handy for your project but I am open to suggesting more efficient libraries where required. On the matter of conflict resolution and background syncing, I adhere to robust methodologies that ensure data integrity and steady syncing without cumbersome crashes. My approach includes regular sync cycles aligned with periods of stability. I would be glad to share further insights during our collaboration if it would help you understand my workflow in greater detail. Stick with me for a reliable and professional execution of your task?
₹7,999 INR dalam 7 hari
4.9
4.9

Hello Sir, I will not write any AI-generated lengthy bid . I’ll directly address your requirements: As 6+ year work Experience of Android Native App using Java (preferred)/Kotlin i can tell you with confident that i will deliver Data-Sync APK . I’ve just finished another project, so I’m fully available and can start immediately. Let’s schedule a quick call today to discuss the details. Best regards, Harshadbhai Ghori
₹1,500 INR dalam 1 hari
4.4
4.4

With your Android data-sync project, I put forward my extensive experience in Android App Development. At Dlite Info Tech, we take immense pride in our ability to build high-performing, bug-free applications with clean code. As a seasoned developer, I consistently prioritize providing solutions that scale, secure, and perform flawlessly – precisely what you're seeking. Moreover, my experience in Backend Development enables me to handle the infrastructural needs of your project effortlessly. From managing REST APIs for syncing to implementing efficient background syncing strategies using JobScheduler or WorkManager, I possess the knowledge and keenness to provide you with an APK that flawlessly runs on all Android 8.0+ devices while meeting all acceptance criteria. Partner with me for this job, and you can expect a signed, install-ready APK along with organized source code ready to be deployed for future releases without any surprise challenges.
₹4,999 INR dalam 5 hari
3.7
3.7

Hi, I can easily DO your work IN 24 HOURS, DM me now to get started, PRICE NEGOTIABLE 100% Work satisfaction is provided
₹1,000 INR dalam 1 hari
2.5
2.5

As an experienced full-stack developer with a strong background in software architecture and mobile app development, I bring valuable skills and knowledge to your data-sync APK project. My proficiencies in Android App Development will allow me to seamlessly review, optimize, or rewrite the sync logic in your existing codebase without compromising the UI or application performance. Past projects comparable to yours include developing custom software solutions with intense emphasis on synchronization, real-time updating, and smooth performance across various devices, a skill which I believe is essential for success in this job. Conflict resolution is a critical component I will deeply consider. My preferred approach involves evaluating multiple factors such as timestamps, priority, user preferences, and dependency needs to ensure accurate and prompt syncing whenever a connection is available. In conclusion, my comprehensive understanding of mobile development combined with in-depth expertise in Node.js and PostgreSQL provides unique strengths that align perfectly with your project's requirements. You'll receive not just a signed, install-ready APK for phones and tablets but also well-commented source codes in a reproducible Git repo plus a one-page setup/build guide for seamless future releases. Team up with me today, and let's turn your project vision into a stunning reality!
₹1,050 INR dalam 7 hari
0.0
0.0

As an experienced backend developer, I understand the criticality of seamless data synchronization to your project. I have a proven ability in designing and implementing robust server-side systems which aligns with your need for a reliable build. My mastery extends to libraries such as Node.js, Express and NestJS which emphasize lightweight but robust solutions, perfect for this project. Having built both REST and GraphQL APIs, I have extensive experience in dealing with data conflicts and ensuring smooth background syncing. For instance, I've used Redis as a tool to help handle real-time conflict resolution. My approach is to review the existing codebase thoroughly with a meticulous eye, and rewrite or optimize components if necessary to ensure incremental backup sync occurs within 30 seconds of connectivity recovery. It’s worth mentioning that I follow SOLID principles which are ideal for complex, long-term projects like yours.
₹1,050 INR dalam 7 hari
0.0
0.0

I BRING THE PRECISE EXPERTISE NEEDED FOR THIS PROJECT. Your requirement for a seamless, integrated, and reliable data synchronization system across phones and tablets aligns perfectly with my skills. I specialize in Android development with strong experience in optimizing sync logic using Retrofit, Room, and alternative efficient libraries. I focus on clean architecture, conflict resolution strategies like timestamp-based merges or user-driven decisions, and robust background syncing leveraging WorkManager to ensure smooth, crash-free operations. We are new to freelancer but an expert in this field. Offering top tier work at a competitive rate while I build reviews. Im happy to share examples of previous work done. Lets discuss your project in further! Best Regards, Chad Matthee
₹600 INR dalam 10 hari
0.0
0.0

Hi, This is exactly the kind of sync-focused Android work I’m experienced with. I understand your goal is to ensure reliable offline-first behavior while keeping the existing UI intact. I’ll focus on stabilizing and improving the data sync layer so records created or updated offline are safely and consistently synced once connectivity is restored. **My approach:** * Review current sync implementation (Room + Retrofit flow) * Refactor or redesign sync logic if needed (queue-based or state-based sync) * Implement reliable background syncing (WorkManager) * Handle conflict resolution (timestamp/version-based strategy) * Ensure safe retries, no data loss, and consistent state across devices **Deliverables:** * Signed APK (Android 8.0+ compatible for phone & tablet) * Clean, well-documented source code * Simple, reproducible build/setup guide I’ve worked with offline sync patterns and understand the importance of stability, especially for real-world usage. I can complete this within 2–4 days depending on current code quality. Happy to review your codebase and get started.
₹2,120 INR dalam 2 hari
0.0
0.0

Hi, We can help you deliver a stable, sync-optimized Android build from your existing source code. At NovarsisTech Pvt. Ltd., Indore, we’ve worked on apps with offline-first architecture, Room DB, Retrofit APIs, and reliable background sync, ensuring zero data loss and smooth performance across devices. ✔ Review & optimize/rewrite sync logic (offline → online) ✔ Robust conflict resolution (last-write / server-priority as needed) ✔ Background sync using WorkManager (auto within ~30 sec connectivity) ✔ Clean, signed APK (Android 8.0+ phones & tablets) ✔ Well-documented code + reproducible build setup We focus on accuracy, performance, and crash-free sync behavior. Ready to start immediately. ? +91 9111720303 Best regards, NovarsisTech Pvt. Ltd., Indore
₹1,050 INR dalam 7 hari
0.0
0.0

Hi, I can review your existing codebase, optimise the sync logic using Room and Retrofit with WorkManager for reliable background syncing, implement proper conflict resolution strategy, compile a signed APK for phones and tablets, and deliver a clean reproducible build process. Full two-way sync on first run, incremental background sync within 30 seconds of connectivity restored, Android 8.0+ compatible, zero crashes and zero data loss. For conflict resolution I use a timestamp-plus-version-flag approach last write wins for simple fields, with manual merge flags for critical records which covers 95% of real-world offline edit scenarios cleanly. You'll receive the signed APK, well-commented updated source in Git, and a one-page build guide so future releases require no guesswork. Quick question: can you share the current codebase so I can assess the existing sync implementation and identify whether optimisation or a rewrite is the faster path? Best regards, Mairaj Ahmed
₹1,400 INR dalam 1 hari
0.0
0.0

As an experienced mobile app developer with a solid background in Java and database management, I believe I am the perfect fit for your Data-Sync APK build project. While my primary focus has been on web development, my experience extends to creating and optimizing applications for Android. Retrofit and Room libraries are already part of my arsenal, which means I will be able to swiftly interpret and enhance your existing codebase for optimal data synchronization performance. Conflict resolution is a critical aspect of sync-centric projects, and my experience comes in handy here. I understand the intricacies involved in such instances, and I'm well-equipped to tackle them head-on. My aim always lies in ensuring that information integrity is maintained while minimizing data loss as much as possible. Lastly, dependable delivery is a cornerstone of my work ethic; not only will I provide you with the signed, install-ready APK for phones and tablets but also an updated and well-commented source code in a Git repo for future reference or modifications. Ensuring visibility in every step of the project, I will also offer a concise one-page setup/build guide to make your future releases effortless. Choose me today, and let us create an Android application that guarantees smooth, accurate data sync for you!
₹950 INR dalam 3 hari
0.0
0.0

Hi, I can deliver exactly what you need — a reliable Android build with seamless offline-to-online sync. ? MY APPROACH I'll audit your codebase, fix the sync logic using WorkManager with network constraints, and implement a "last-write-wins" conflict resolution strategy with a Room change-log table to ensure zero data loss. Background sync will trigger within 30 seconds of connectivity being restored. ⚙️ TECH STACK Room · Retrofit · WorkManager · Kotlin Coroutines ✅ DELIVERABLES • Signed APK (phone + tablet, Android 8.0+) • Well-commented source code via Git/ZIP • One-page build guide Full two-way sync on first run, incremental background sync in 30s, zero crashes — guaranteed. Happy to share past work. Let's connect! Best regards
₹999 INR dalam 2 hari
0.0
0.0

Banglore, India
Ahli sejak Ogo 15, 2017
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