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I need a lightweight Windows service that lets my Android app talk to the Apache server installed on the same machine and keeps both sides perfectly in step. The sole purpose of the bridge is data synchronization: when the phone is on the local Wi-Fi, new or modified records must travel seamlessly to a SQLite database on the PC and flow back just as reliably. Here’s the environment you’ll be dropping into: Windows 10/11, a standard Apache build, and a single SQLite file that stores everything. Language choice is up to you—Python, C#, Node.js, or anything else that installs cleanly on Windows—as long as you supply full source and an easy setup script. You don’t need to alter the Android code itself; just give me REST endpoints (or another documented protocol) the app can call. For the solution to be accepted it must • run as a background service that starts with Windows, • expose secure endpoints my Android app can hit locally (http://localhost is fine), • handle two-way sync, resolving “last write wins” conflicts automatically, • write concise logs so I can trace each transaction, • include a simple installer or one-click script and a short README. I’ll sign off once I can install the service on a fresh VM, connect my test Android app, and watch data move in both directions without a hiccup.
Project ID: 40405995
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194 freelancers are bidding on average $469 USD for this job

⭕⭕ FULL STACK MOBILE APP DEVELOPER ⭕⭕ Hi there, ✔️ Based on your requirements, you need a lightweight Windows background service acting as a sync bridge between your Android app and local Apache + SQLite setup, and I can build a stable, secure, and easy-to-install solution that handles seamless two-way data sync. ✍️ Does your Android app already send timestamps/version fields for records? ✍️ Roughly how many tables/entities need syncing? ✍️ Do you want manual “force sync” endpoint in addition to auto sync? ✅ I specialize in building reliable sync systems, background services, and API bridges, ensuring smooth data flow even in constrained/local environments. I’ll make sure you can install it on a fresh VM and see data syncing instantly without hiccups, exactly as per your acceptance criteria. Looking forward to working with you. Thank you.
$500 USD in 7 days
10.0
10.0

Hello, I understand you need a lightweight Windows service that enables Android-to-Apache data sync on a single machine, with two-way REST-style communication to a local SQLite file. The goal is reliable, conflict-resolved, bidirectional data flow when the phone is on your Wi‑Fi, and concise logs for traceability. I will build a compact service that starts at Windows boot, exposes secure endpoints on http://localhost, and synchronizes records between the Android app and the PC SQLite database using a simple, documented protocol. The solution will automatically resolve last-write-wins conflicts, maintain a durable audit trail, and include a one-click installer or script plus a README. I’ll provide the full source code in a clean project structure, with clear setup steps and minimal dependencies so you can reproduce the environment on a fresh VM. Approach: - Choose a language that runs well on Windows (C# or Node.js are ideal for Windows services). Implement a small REST API with endpoints for push/pull operations and conflict handling. - Implement a local SQLite store on the PC and a matching data model on the Android side, using a simple last-write-wins rule with timestamps. - Add persistent logs and a lightweight daemon that runs as a Windows service and starts automatically. - Provide an installer/script, a README, and test data to verify end-to-end sync quickly. What is the preferred authentication method for the local endpoints (token-based, API key, or mutual TLS) and
$750 USD in 17 days
9.3
9.3

I WILL BUILD A RELIABLE LOCAL SYNC BRIDGE BETWEEN ANDROID & WINDOWS—ZERO DATA LOSS ? With 12+ years in backend and system-level development, I’ve built similar offline-first sync systems using SQLite and REST bridges. I can deliver a lightweight Windows service that seamlessly syncs your Android app with your local Apache environment. Approach: Develop a Windows Service (C# .NET preferred for stability) exposing secure local REST APIs. It will act as a sync layer between the Android app and SQLite DB, ensuring real-time, two-way data flow. Workflow: Android → API call → service validates & writes to SQLite → logs transaction → detects changes → pushes updates back via endpoints → ensures sync consistency. Core Features: Background Windows Service (auto-start) Secure local endpoints (token-based auth) Two-way sync with “last write wins” conflict handling SQLite integration with efficient query handling Structured logging for traceability Lightweight & fast (low resource usage) Deliverables: Full source code One-click installer/setup script REST API documentatio README (setup + usage)
$350 USD in 7 days
8.4
8.4

Hi there, I am the best here! Please check out my profile and see what others have to say about the work I've done related to the skills you're looking for. Hope to work together soon. Thanks!
$500 USD in 7 days
7.5
7.5

Hi there, I understand you need a lightweight Windows service that lets an Android app talk to a local Apache server and keeps a two‑way data synchronization loop with a single SQLite file. I will deliver a small, robust bridge that runs as a Windows service, exposes secure REST endpoints on localhost, and handles two‑way sync with automatic last‑write‑wins conflict resolution. The solution will be language-agnostic but implementable in Node.js or C# for clean Windows integration. It will include a concise log stream, a simple installer/one‑click setup, and clear README steps. I’ll provide full source and an easy setup script so you can drop it on a fresh VM and be online quickly. Approach: I’ll implement a local REST API (HTTPS if you want to keep it secure on localhost) that the Android app calls when on Wi‑Fi. The bridge will read and write to the SQLite file on the PC, track change metadata, and apply last‑write‑wins policy for conflicts. A lightweight background service will start on boot, listen for requests, queue logs, and write concise transaction entries. The installer will set up the service, dependencies, and a minimal config. The code will be clean, well‑commented, and ready for auditing. What authentication method do you prefer for the local endpoints (e.g., token, mutual TLS, or simple shared secret) and do you want strict HTTPS on localhost? Best regards, Shamshad
$750 USD in 11 days
7.2
7.2

ARCHITECTING A LOW LATENCY WINDOWS SYNC BRIDGE FOR ANDROID DATA MOBILITY For a lightweight, robust background service, I recommend C# Programming using the .NET worker service framework. It provides the most native stability for Windows 10/11, ensuring the bridge starts instantly with the OS and manages SQLite file locks efficiently. At Plan D Studios, we bring 12+ years of experience in Custom Software and REST API development, focusing on high integrity data synchronization. My Approach for the Bridge: Background Service: A native Windows Service with built in recovery and concise transaction logging for full traceability. Sync Logic: Implementing a "Last Write Wins" resolution at the repository level to ensure your Android app stays perfectly in step with the PC. Connectivity: Exposing secure endpoints that your app can call over local WiFi for seamless two way flow. Deployment: I will provide a one click PowerShell installer or MSI package for effortless setup on any fresh VM. Everything is developed in house to ensure clean code and reliable performance. Do you have the current SQLite schema ready, or should we build the sync endpoints to be dynamic to accommodate future table changes? Regards, Haider
$350 USD in 7 days
7.2
7.2

This looks like a great fit, I will build a lightweight Python-based Windows service — REST API over Flask/FastAPI, SQLite integration, and automatic two-way sync — packaged with a one-click installer and README. For conflict resolution, I will track a `last_modified` timestamp plus a device-origin field on every row. "Last write wins" works well here, but adding the origin column lets you audit which side overwrote what — useful when debugging sync issues. The service will register via `pywin32` so it starts with Windows, and every transaction gets logged to a rotating file with request ID tracing. Questions: 1) What does the record schema look like — single table or multiple related tables with foreign keys? Looking forward to your response. Best regards, Kamran
$270 USD in 10 days
7.5
7.5

Hi There! My name is Awais, and I bring to the table a wealth of experience in developing robust, scalable, and high-performing mobile applications on Android. I believe my skillset is an ideal fit for your project. Having worked extensively with Java, Kotlin and Android Studio, I am confident in my ability to create a lightweight Windows service that will not just connect your Android app seamlessly to your Apache server, but also ensure a flawless two-way data synchronization from the SQLite database. As you mentioned, my work focuses on clean code and reliable solutions - this encompasses automatically resolving "last write wins" conflicts ensuring utmost synchronization accuracy. Additionally, meticulous logging capability is always integrated into my projects allowing transaction tracking for easy debugging processes. Lastly, I pride myself on my knack for delivering user-friendly solutions that precisely cater to specific business needs. Your outlined preference for REST endpoints locally accessible via "http://localhost" aligns perfectly with this goal. With me onboard, you can expect a well-documented solution with detailed installation instructions ready to be deployed on any fresh VM. Thank you for considering my candidacy; let's discuss your project further!
$500 USD in 2 days
7.0
7.0

As a seasoned professional with a wealth of experience in Android and Mobile App Development, I am confident that my team at CnELIndia is more than equipped to tackle your Android-to-Apache Sync Bridge task. We have an impressive record of developing complex, reliable solutions for data synchronization, and our fluency with a range of technologies allows us to cater to your specific platform requirements without compromising quality or efficiency. In particular, our mastery in React Native resonates well with your need for seamless cross-platform communication between Windows and Android. We have previously created numerous background services that start with Windows, as well as robust HTTP endpoints, satisfying the goals you've outlined for this project. Additionally, our proficiency in handling conflicts and ensuring "last write wins" policies will undeniably keep your data intact across platforms. Apart from technical expertise, we understand the importance of clear logging and an easy setup process. Therefore, we intend to provide thorough documentation along with a simple installer or one-click script to ensure a seamless implementation process on your end. Trust the CnELIndia team to install the service on a fresh VM, connect your test Android app, and demonstrate flawless bidirectional data flow—a delivery without hiccups guaranteed.
$500 USD in 7 days
7.2
7.2

You need a local bridge that behaves predictably: phone connects over Wi-Fi, pushes changes, and your PC reflects them instantly—while also sending updates back without duplication or drift. I’d implement this as a lightweight Windows service (C# for native service control) exposing local REST endpoints. It will track record timestamps and sync state in SQLite, applying “last write wins” deterministically. A small change queue ensures no updates are lost during brief disconnects. Apache can either proxy requests or stay untouched if your app calls the service directly. Logging will be structured but minimal—each transaction, direction, and conflict outcome. I’ll include a one-click installer (PowerShell) and a clean teardown/setup flow for fresh VMs. I’ve built similar sync layers in Bubbl (Vue/Nuxt + Express), handling bidirectional state with high reliability under intermittent connectivity. Happy to get this running cleanly end-to-end. Q1: Do records have a unique ID + updated_at field already? Q2: Expected data volume / sync frequency? Q3: Should Apache route traffic, or can the app call the service directly?
$500 USD in 7 days
7.0
7.0

Hi there, I have read your project requirement. You need a lightweight Windows background service that enables secure, two-way data synchronization between your Android app and a local Apache + SQLite setup, with REST endpoints, conflict handling, and reliable logging. We can build this using C# (.NET Worker Service) for a native Windows service that auto-starts, exposes secure local REST APIs, and efficiently handles SQLite operations. The service will support two-way sync with “last write wins” conflict resolution, structured logging for traceability, and a clean installer script for quick setup. The architecture will be simple, stable, and easy to extend if needed. A few quick questions to proceed: =========================== What is the approximate data structure (tables/size) in your SQLite database? How frequently will sync requests occur (real-time, periodic, manual trigger)? Do you need authentication for local endpoints or is LAN-only access sufficient? Any preferred format for logs (file-based, JSON, or integrated viewer)? Best Regards, Srashtasoft Team
$500 USD in 7 days
7.1
7.1

As an experienced Full Stack Developer and Software Engineer, with a speciality in Mobile App Development on the dexterous Android platform, I believe I am uniquely positioned to take on the challenge of creating an efficient sync bridge for your Android-to-Apache server needs. Throughout my journey, I have handled various aspects of back-end development and have adeptly integrated third-party APIs seamlessly into solutions. I am comfortable employing multiple programming languages such as Python, Node.js, and C#, which offers fantastic versatility considering you haven't specified a preferred language for implementation. Having worked on similar projects before, I understand the importance of reliable and robust two-way sync logic while handling conflicts seamlessly - which will give you peace of mind knowing that your important data is traveling and syncing without any hiccups.
$400 USD in 14 days
6.7
6.7

Hello, Having worked on mobile app development and being proficient in both Android and C# programming, I am well-suited to develop the lightweight Windows service that you need to ensure seamless synchronization between your Android app and Apache server. I have a thorough understanding of how such a sync bridge is essential for keeping records updated and accurate. Drawing on my experience in building RESTful endpoints, I will create documented protocols that your app can directly call and consume. Moreover, having successfully developed similar projects in the past, I am confident in my ability to build reliable and secure endpoints that meet your requirements for local hits(HTTP://localhost). I will develop this solution as a background service with its initiation happening automatically with Windows start-up, ensuring uninterrupted data synchronization. In addition, my strong capabilities in writing concise logs assure me of my capability to provide you with precise transaction history for easy debugging. Lastly, my focus on customer satisfaction means I will also include easy-to-use installers and setup guides so you can quickly get started with monitoring the data flow bidirectionally without any hiccups. Thanks!
$350 USD in 4 days
6.8
6.8

Hello There!!! ★★★★ ( Lightweight Windows background sync bridge for Android ↔ Apache ↔ SQLite real-time data flow ) ★★★★ Project understanding: I understand you need a Windows service that runs in background and syncs data between Android app and local Apache + SQLite database. It must expose REST endpoints, support two-way sync with last-write-wins conflict handling, and work reliably over local Wi-Fi. ⚜ Windows service setup (auto start + background execution) ⚜ REST API endpoints for Android communication ⚜ Two-way sync between Android and SQLite database ⚜ Conflict resolution using last-write-wins logic ⚜ Secure local localhost communication layer ⚜ Logging system for tracking sync transactions ⚜ One-click installer + README for setup and testing I have experience building backend services using Node.js, C# and Python with REST APIs and SQLite integration. I’ve worked on local sync systems and mobile-to-server data bridges focusing on reliability and low latency. My approach will be building lightweight API layer first, then sync engine, service wrapper and installer script, followed by testing on fresh VM for smooth deployment. Let’s discuss and I can start building a stable sync bridge for your system. Warm Regards, Farhin B.
$256 USD in 10 days
6.6
6.6

Hi I am ready to tackle your Android-to-Apache sync bridge project. My in-depth understanding of both Windows and Linux-based systems will be a significant advantage in ensuring smooth bi-directional data synchronization between your Android app and Apache server on Windows. In my career, I've successfully developed numerous REST APIs and background services that start with Windows like you require for this project. This experience will ensure that the service I create for you will run seamlessly in the background while efficiently handling data conflicts using a 'last write wins' resolution strategy; all while writing concise logs for better tracing and debugging. I will do my best to finish your project, Kind regards, Jaffer
$250 USD in 7 days
6.4
6.4

Your Apache setup will bottleneck the moment two devices try syncing simultaneously without a transaction queue. SQLite locks the entire database during writes, so concurrent requests from your Android app will fail with "database is locked" errors unless you implement a proper queuing layer. Before I architect the solution, I need clarity on two things: What's your expected sync frequency - are we talking real-time push every few seconds or periodic batch sync every few minutes? And does your Android app currently use any specific authentication mechanism, or should I implement token-based auth from scratch? Here's the architectural approach: - NODE.JS + EXPRESS: Build a REST API with request queuing using Bull (Redis-backed) to serialize SQLite writes and prevent lock contention. This handles 100+ concurrent sync requests without database errors. - SQLITE WAL MODE: Enable Write-Ahead Logging to allow simultaneous reads during writes, reducing lock wait time from 2-3 seconds to under 50ms for typical sync operations. - CONFLICT RESOLUTION: Implement vector clocks with millisecond timestamps plus device ID to handle true "last write wins" - standard timestamps alone fail when clocks drift between phone and PC. - WINDOWS SERVICE WRAPPER: Use node-windows to install as a native service with auto-restart on failure, writing structured JSON logs to %PROGRAMDATA% for easy troubleshooting. - HEALTH CHECK ENDPOINT: Expose /api/health that your Android app pings every 30 seconds to detect when the PC goes offline, preventing the app from queuing failed requests indefinitely. I've built three similar local-sync systems for inventory management apps that needed offline-first architecture. Let's schedule a quick call to walk through your current Android sync logic before I write code - I don't take on projects where the mobile-side contract isn't crystal clear.
$450 USD in 10 days
7.2
7.2

⭐⭐⭐⭐⭐ Create a Windows Service for Seamless Android and Apache Data Sync ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and see you are looking for a lightweight Windows service to synchronize data between your Android app and an Apache server. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects focusing on data synchronization. I will create a service that runs in the background, ensuring smooth data flow between your devices. ➡️ Why Me? I can easily build your Windows service as I have 5 years of experience in developing backend services and data synchronization solutions. My expertise includes working with REST APIs, database management, and background services. Besides, I have a strong grip on relevant technologies like Python, C#, and Node.js, ensuring a robust solution for your project. ➡️ Let's have a quick chat to discuss your project in detail. I’d love to show you examples of my previous work. Looking forward to connecting with you! ➡️ Skills & Experience: ✅ Windows Service Development ✅ Data Synchronization ✅ REST API Creation ✅ SQLite Database Management ✅ Apache Server Configuration ✅ Background Task Management ✅ Secure Endpoint Design ✅ Logging and Monitoring ✅ Python Programming ✅ C# Development ✅ Node.js Development ✅ Simple Installer Creation Waiting for your response! Best Regards, Zohaib
$350 USD in 2 days
6.4
6.4

Hi, This is a clear local sync architecture problem, and the key is building a stable bridge service that guarantees consistent two-way data flow between Android and your Windows/SQLite environment. I can build a lightweight Windows background service (Python, C#, or Node.js depending on your preference) that exposes secure local REST endpoints for your Android app. This service will handle incoming updates, write them to SQLite, and push back any server-side changes in a controlled sync cycle. The system will include proper timestamp-based conflict resolution using a “last write wins” strategy, along with structured logging so every sync event can be traced easily. I’ll also ensure it runs automatically on startup as a service and remains stable in the background. For deployment, I’ll provide a simple installer or setup script plus clear documentation so you can install it on a fresh VM and verify end-to-end sync without extra configuration. Best, Justin
$500 USD in 7 days
5.9
5.9

Having accomplished over 248 successful projects including various Apache and Windows synchronizations, my team is well-versed in the creation of lightweight Windows services that can seamlessly communicate with Android apps. Our excellent track record on Freelancer speaks for itself. Proficient in C# Programming, our deep knowledge of REST APIs, SQLite databases, and Apache servers assures you bug-free sync solution. Not only will we deliver a robust background service that automatically syncs data in real-time, handling conflicts effectively with a "last write wins" approach, we'll also equip you with a concise logging system to ensure easy traceability. The convenience of starting this application on boot through an installer or a one-click script won't be lost on us as we appreciate a hassle-free user experience. Above all, as advocates for 'transparent communication', I assure you untiring support even after the project is wrapped up. Our team's consolidated skills of C#, Linux proficiency, plus colossal Mobile App Development expertise, including with Flutter and Dart specifically for Android, puts Einnovention ahead from competitors. Partner with us today for an efficient, stable, and easily implemented service that extends beyond your requirements.
$500 USD in 7 days
6.2
6.2

Hello, With 4 years of experience in Mobile App Development, REST API, and Node.js, I am well-equipped to handle your project requirements. I understand the need for a lightweight Windows service to facilitate seamless data synchronization between your Android app and Apache server. I can provide a professional solution that includes setting up a background service on Windows, creating secure endpoints for local communication, implementing two-way sync with conflict resolution, generating concise transaction logs, and offering an easy installer with clear documentation. I have expertise in Linux, Android, C# Programming, Node.js, SQLite, and REST API development. Let's discuss further details in the chat to ensure that the project is completed to your satisfaction. Regards, Taimoor from Pixels Soft Please connect in chat for further discussion. Best regards.
$500 USD in 7 days
5.4
5.4

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