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Android Call Recording App with Secure Server Sync Objective: Independent, Tamper-Proof Call Recording & Monitoring System 1. Project Overview This project aims to develop an enterprise-grade Android application that automatically records all incoming and outgoing calls, securely uploads recordings to a central server, and prevents employees from stopping, modifying, or deleting recordings. The system is designed for sales, support, and compliance monitoring, especially for distributed teams across India. 2. Key Objectives Automatic call recording (incoming & outgoing) No manual control by employees (no pause/stop/delete) Background operation (silent & invisible) Secure upload to server Centralized admin access Scalable for 100s–1000s of users Legally compliant & auditable 3. System Architecture (High Level) Android Device ├─ Call Listener (Telephony API) ├─ Call Recording Service (Foreground + Background) ├─ Local Encrypted Storage (Temporary) ├─ Auto Upload Service └─ Device Lockdown (MDM / Admin) ↓ HTTPS (TLS) Cloud / On-Prem Server ├─ REST API (Auth + Upload) ├─ Audio Storage (Encrypted) ├─ Database (Metadata) ├─ Admin Web Dashboard └─ AI Processing (Optional) 4. Android Application – Detailed Scope 4.1 Call Recording Functionality Recording Mode Records both incoming and outgoing calls Starts automatically when call connects Stops only when call disconnects No UI controls for employee Technical Approach Android Call State Listener Foreground Service (mandatory from Android 9+) Audio Source: VOICE_COMMUNICATION VOICE_CALL (device dependent) Codec: AAC / AMR-WB / OPUS File Format: .m4a or .wav ⚠️ Device compatibility testing required (Samsung, Xiaomi, Vivo, Oppo) 4.2 No Employee Interference (Critical Requirement) Employee CANNOT: Stop recording Pause recording Delete recordings Disable permissions Uninstall app Implementation Methods Device Owner / MDM Mode App installed as system-level app Permissions auto-granted Admin Lock App hidden from launcher App protected with admin PIN Auto-Restart Services Watchdog service restarts recorder if killed Permission Monitoring App checks permissions every few seconds Alerts server if revoked Tamper Detection Detects root, app cloning, VPN misuse 4.3 Background & Stealth Operation No visible UI during calls Silent recording (no beep) Runs on boot (BOOT_COMPLETED) Battery-optimized recording Handles: Phone restart Network loss App crash recovery 5. Data Captured Per Call Field Description Employee ID Unique device/user Caller Number Incoming/Outgoing Call Type Incoming / Outgoing Call Start Time Timestamp Call End Time Timestamp Duration Seconds Recording File Encrypted Device Info Model, Android version Location (Optional) If enabled 6. Local Storage Policy Recordings stored temporarily AES-256 encrypted on device Auto-delete after: Successful upload OR Max retention (e.g., 7 days) Storage usage cap (e.g., 2GB) 7. Server-Side System 7.1 Backend API Technology Stack (Suggested) Backend: Node.js / Laravel / FastAPI Database: PostgreSQL / MongoDB Storage: AWS S3 Azure Blob On-prem NAS Auth: JWT + Device Token Core APIs Device registration Recording upload Heartbeat (device alive) Permission status reporting User & role management 7.2 Audio Storage & Security Encrypted at rest (AES-256) Encrypted in transit (HTTPS / TLS) File naming with UUID Access only via admin roles Audit logs for every playback/download 8. Admin Web Dashboard 8.1 Features Employee / Device list Call logs with filters: Date Employee Phone number Audio playback (streaming) Download permissions (role-based) Call duration & productivity reports Alerts: App disabled No uploads Permissions revoked 8.2 Roles & Access Role Access Super Admin Full Manager Team calls Auditor Listen only HR Reports 10. Legal & Compliance (India) Important- Inform employees in appointment letter / policy Use for official calls only Comply with: IT Act, 2000 Company internal compliance policy Add consent notice during onboarding 11. Deployment Models Option 1: Company-Owned Phones (Recommended) Full control Device Owner mode Zero employee interference Option 2: BYOD (Not Recommended) Limited control Higher legal risk OS restrictions 12. Development Phases & Timeline Phase Duration Requirement Finalization 1 week Android App Development 5–6 weeks Backend + Dashboard 4–5 weeks Device Testing 2 weeks Pilot Deployment 2 weeks Production Rollout 1 week Total: ~12–14 weeks 13. Estimated Cost (Indicative) Component Cost (INR) Android App ₹4–6 Lakh Backend & Dashboard ₹3–5 Lakh Testing & Deployment ₹1–2 Lakh AI Features (Optional) ₹3–6 Lakh 14. Deliverables Android APK / AAB Backend source code Web dashboard API documentation Deployment guide Admin & user manuals 15. Future Scalability Multi-company support WhatsApp call recording (device dependent) CRM integration Live call monitoring (legal dependent)
Proje No: 40071797
32 teklifler
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32 freelancer bu proje için ortalama ₹96.428 INR teklif veriyor

My name is Shivpal and my team at Carol Data Technology has extensive experience in developing and launching cutting-edge mobile applications, making us a great choice for your project. With over 10 years of industry experience, we have developed unique processes that allow us to deliver solutions marked by creativity, quality, speed, and affordability. We've been delivering error-free services for our clients globally through tried-and- true languages such as Java, PHP amongst other advanced tech stacks. Coming to the crux of your requirement, I assure you that my team will build an Android Call Recorder App integrated with a highly secure server within the deadline. We will deploy multiple checks like AES-256 encryption for both local and server-side data storage, app security measures such as device lock-down and MDM support to eliminate employee interference—all aligned to legal compliances within India. Additionally, we understand that as the system will be used across diverse teams, compatibility with different devices like the ones from Samsung, Xiaomi, Vivo and Oppo would be critical. I must assure you that our experience developing scalable apps puts us in a strong position to handle these multi-device challenges. Choosing us ensures not only quality product satisfaction but also daily project progress reports, transparent communication throughout the project-- essential characteristics for building-rooted business relationships. Let's discuss more!
₹25.000 INR 7 gün içinde
6,9
6,9

Hello Client, Greeting of the day!!!! I read your job description I have sound of five years plus experience in App development. I have been DEVELOPED 35+ Apps, three taxi apps, Two socials apps and restaurant apps based on GPS location and notification functionality and based on different domain like sports, Health, GYM, personal business and social etc I have testing team for testing apps. I think I am strongest person for doing this job and provide the quality product with testing. I am always available for your support. Thanks Sr. Mobile Developer
₹12.500 INR 20 gün içinde
6,7
6,7

** NO UPFRONT PAYMENT ** I can start immediately My name is Amarjeet Singh I have read your job I am very familiar & specialized in Java Mobile App Development iPhone Android Node.js Laravel Android App Development Android SDK API Development FastAPI I am very excited to see your job posting as I am confident that I am a perfect fit for what you are looking for I have checked out all your requirements regarding application development and we can help you. AM highly interested in your project, as I have worked on many similar projects. Apart from this i have make good use of APIs and web services. I have integrated API and web services. If you award me the project I'd be very happy to discuss this further and get started for you as soon as possible. You can see an example of one of those projects in my portfolio here: https://www.freelancer.in/u/fullstack0407
₹25.000 INR 15 gün içinde
5,8
5,8

This is a serious, enterprise-grade call-monitoring system, and I clearly understand your focus on tamper-proof recording, MDM/device-owner control, and silent background operation across Android 9+ devices. I’ve worked with foreground services, call-state listeners, encrypted local storage, watchdog services, and secure server sync, including handling OEM differences (Samsung/Xiaomi/Oppo) and compliance constraints in India. I can deliver a locked-down Android app + scalable backend + admin dashboard that prevents employee interference while remaining auditable and stable at scale. I’m also comfortable coordinating device-owner provisioning, permission enforcement, and secure upload pipelines end-to-end. Looking forward for your positive response in the chatbox. Best Regards, Arbaz H
₹25.000 INR 7 gün içinde
5,2
5,2

We propose to design and develop an enterprise-grade Android call recording and monitoring system that automatically records all incoming and outgoing calls, securely syncs them to a central server, and prevents any employee interference or tampering. Scope of Work Automatic call recording (incoming & outgoing) with no manual controls Silent, background operation using Foreground Services (Android 9+) Device Owner / MDM-based app lockdown (no uninstall, no stop, no delete) Encrypted local storage with auto-upload to secure server Tamper detection (root, permission revoke, service kill) Centralized admin web dashboard for call logs, playback, reports, and alerts Scalable backend architecture for 100s–1000s of devices Compliance-aligned implementation for India (IT Act, consent policy) Technology Stack Android: Kotlin, Telephony API, Foreground Services Backend: Node.js / Laravel / FastAPI Database: PostgreSQL / MongoDB Storage: Encrypted Cloud / On-Prem (S3 / Blob / NAS) Security: AES-256 (at rest), TLS (in transit), JWT authentication
₹1.200.000 INR 14 gün içinde
4,2
4,2

With a wide range of expertise in API Development, Java, Laravel, Mobile App Development, and Node.js, I'm confident that I can successfully see this Android Auto Call Recording project through from start to finish. For instance, my proficiency in Mobile App Development especially with Android will greatly add value to your system design ensuring automatic call recording for both incoming and outgoing calls. I am well-versed in the use of the Telephony API to employ Call Listener services and create a local encrypted storage for temporary files just as specified. I guarantee the necessary device compatibility testing required on platforms like Samsung, Xiaomi, Vivo, Oppo to ensure optimum functionality. A special attribute that sets us apart at OTUSONE – Innovative IT Solutions is our penchant for innovation which perfectly aligns with your objective for an independent, tamper-proof call recording and monitoring system. Combining the use of MDM mode and administrative lockdown, we'll ensure that employees cannot stop, pause or delete any recordings and most importantly are unable to disable permissions or uninstall the app. We'll also establish a robust Alert system that detects when these actions are attempted and sends information to the central server as a prevention strategy.
₹25.000 INR 20 gün içinde
3,8
3,8

Dear Hiring Manager, I can deliver your Android Call Recording App with Secure Server Sync, fully tamper-proof, background-enabled, and enterprise-ready. The app will automatically record incoming/outgoing calls, encrypt recordings (AES-256), and upload them to a secure server. Employees cannot pause, stop, or delete recordings. I’ll implement Device Owner/MDM mode for auto permissions, hidden UI, watchdog services, and root/tamper detection. Local storage will auto-delete after upload or retention expiry. The app will run silently across major devices (Samsung, Xiaomi, Vivo, Oppo). Backend (Node.js/PostgreSQL or MongoDB) will manage device registration, secure uploads, heartbeat, role-based access, and logs. Admin dashboard will allow playback, download (role-restricted), call reports, and alerts for permission issues or failed uploads. I will ensure compliance with Indian IT laws, secure API design, and scalable architecture for hundreds of users. Deliverables include Android APK/AAB, backend source code, dashboard, API docs, and admin manuals. I have prior experience building enterprise Android apps with background services, encrypted storage, secure APIs, and admin dashboards. I can complete development, testing, and pilot deployment efficiently, delivering a reliable, fully auditable system. Looking forward to discussing your project and next steps. Best regards,
₹100.000 INR 7 gün içinde
3,5
3,5

As an experienced developer with over a decade in the software development industry, I'm uniquely qualified to tackle your Android Auto Call Recorder project. My expertise spans across multiple domains and technologies, including Laravel which aligns perfectly with your suggested backend stack technology. I've successfully delivered 80+ complex projects, demonstrating my ability to understand intricate requirements and deliver robust solutions. Adding to it, I have deep knowledge of mobile app development and have been efficiently building solutions on Android platform since its inception. I strongly believe that the key to success in this project is rooted in two pillars - advanced technical capabilities and unfathomable understanding of the legalities and compliance requirements. The system you're looking for is highly critical, with zero tolerance for errors or security breaches. My meticulous attention towards details combined with my track record of developing tamper-proof systems further highlight why I am a perfect fit for the job.
₹25.000 INR 7 gün içinde
3,4
3,4

Hello Client, My experience in Android app development includes designing user interfaces, integrating with backend services, and testing and debugging. I have worked on several successful Android projects in the past, and I am familiar with the latest best practices and technologies in the field. brief overview of some different domains where Android app development is used. Social Media: Android apps are used extensively in the social media space. Popular social media platforms like Facebook, Instagram, and Twitter all have Android apps that allow users to access their accounts and share content. E-Commerce: Android apps are also used in the e-commerce space, allowing businesses to offer mobile shopping experiences to their customers. Apps like Amazon, eBay, and Walmart allow users to browse products, make purchases, and track their orders on their Android devices. Finance: Android apps are used in the finance industry to offer banking, investing, and budgeting tools to users. Apps like Mint, Robinhood, and PayPal allow users to manage their money, invest in stocks, and make payments from their Android devices. Education: Android apps are used in the education space to provide learning resources and tools to students. Apps like Duolingo, Khan Academy, and Coursera offer educational content in a variety of subjects, and allow users to learn at their own pace on their Android devices. I am always available for your support. Thanks Sarika
₹15.000 INR 20 gün içinde
3,1
3,1

Hello, I’m Rahul Singh from Team Velora. We’ve been delivering secure, enterprise-grade solutions for over 3 years. I can develop your tamper-proof Android Call Recording App with automatic server sync, ensuring stealth, compliance, and centralized monitoring. Please come to private chat to see relevant samples and discuss details.
₹120.000 INR 30 gün içinde
3,0
3,0

With nearly a decade of experience in software development, I have successfully delivered and managed complex projects of similar scope. My expertise spans full-stack web and mobile application development, enabling me to handle your Android Auto Call Recorder requirement with precision and reliability. As an engineer who values clean, maintainable code, I can deliver an application that seamlessly integrates call recording and secure cloud synchronization as required. I fully recognize the importance of data security and regulatory compliance for this project. My skill set includes API integration, Node.js, and secure storage management, ensuring encrypted uploads to a central server using HTTPS/TLS protocols. Access will be strictly limited to authorized administrative roles, with complete auditing of all playback and download activities. Additionally, my proficiency in React.js and React Native allows me to build an intuitive, efficient admin dashboard that supports smooth oversight for compliance teams. My experience also aligns well with your plans to scale the solution across multiple users, devices, and locations within India. I have consistently delivered high-quality solutions under tight timelines without compromise. I understand the need for the application to operate silently in the background, similar to a system-level app, without disrupting employee workflows or drawing attention on the device.
₹30.000 INR 7 gün içinde
2,8
2,8

As an experienced mobile app developer specializing in Android and iOS app development, I'm confident that I possess the skill set necessary to bring your vision of an enterprise-grade call recording and monitoring system to life. Over the years, I've developed a deep understanding of Android's Telephony API, Call State Listener, and how to implement such complex functionalities in a seamless and tamper-proof manner. With this project being especially for distributed teams across India, it’s crucial for me to mention that I’m well-versed with developing applications keeping stringent legal and compliance requisites in mind. My proficiency extends beyond the functional aspects of app development as I also possess excellent skills in UI/UX design. This means that not only will your app be immensely practical but also highly-user friendly, increasing its overall efficiency in a sales-support and compliance-focused context. Having worked on both Android and iOS platforms, my knowledge of cross-platform compatibility is extensive – a crucial element ensuring the scalability and usage success for your potential 100s-1000s user base. Whether it's choosing the right audio source or ensuring compatibility across varying device models and operating systems like Samsung, Xiaomi, Vivo, Oppo – you can rely on me to deliver a robust solution. Let's create an outstanding call recording app together!
₹25.000 INR 7 gün içinde
2,5
2,5

Hi there, I’ve gone through your requirements and understand you’re building an enterprise-grade, tamper-proof Android call recording and monitoring system, with zero employee control, encrypted uploads, MDM/device-owner enforcement, and a centralized admin dashboard for compliance and audits. With 10+ years of experience in Android system-level apps, foreground services, telephony APIs, MDM/device-owner mode, and secure backend APIs (Node/Laravel/FastAPI), we’ve delivered compliance-critical monitoring solutions where reliability, stealth operation, and data integrity are non-negotiable. I’m ready to start immediately and can align on architecture, device compatibility strategy, and phased delivery to meet your 12–14 week rollout plan. Regards, Ekakshnex Pvt Ltd
₹37.500 INR 7 gün içinde
1,8
1,8

Hi, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on Java, Mobile App Development, iPhone, Android, Node.js, Laravel, Android App Development, Android SDK, API Development, FastAPI Lets connect in chat so that We discuss further. Regards
₹25.000 INR 7 gün içinde
1,7
1,7

Subject: Excited to Bring Your Project to Life! ? Dear [Sir/Madam], I’m thrilled about your project and would love to collaborate! As a new freelancer, I’m dedicated to delivering top-quality work and building a strong portfolio by exceeding your expectations. Why Choose Me? ✅ 3+ Years of Experience: Skilled in PHP, Java, Kotlin, HTML, and JavaScript, with a background at Builder.ai. ✅ Comprehensive Skills: App development, website design, SAP conversion, and more. ✅ Cutting-Edge Solutions: Leveraging the latest technologies like AI and secure authentication. ✅ Quick Communication: Fast and seamless interactions to ensure smooth progress. Services I Offer: ✅ App Development: Expertise in Flutter, Java, Kotlin. ✅ Website Development: Modern, responsive designs. ✅ SAP Conversion: Efficient and accurate transformations. ✅ Graphic Design: Creative logos and banners. ✅ SEO & Marketing: Effective SEO, SMO, and SMM strategies. Skills and Tools: ✅ Languages: Java, JavaScript, PHP, Python. ✅ Frameworks: Laravel, React.js, Django. ✅ Databases: MySQL, PostgreSQL. ✅ Tools: Git, Docker, AWS. I’m passionate about delivering exceptional results and innovative solutions tailored to your needs. Let’s work together to bring your vision to life! Best regards, saleem KHAN ? 7734815980
₹15.000 INR 7 gün içinde
0,0
0,0

As a seasoned professional with over 10 years of experience in API development and Node.js, I strongly believe I am the right fit for your Android Auto Call Recorder Project. I’ve got what it takes to deliver a solution that meets your needs for automatic recording, secure upload, auditable data management, and tamper-proof operation. My extensive experience includes working with UI/UX, JavaScript, React, Node.js, PHP and Laravel. I understand the critical nature of your project, especially around legal compliance and security in India. With my expertise in encrypting data at rest (AES-256) and in transit (HTTPS/TLS), administering strict permissions via JWT + Device Token implementation and ensuring robust API backends in technologies like Node.js / Laravel/ FastAPI with PostgreSQL/ MongoDB storage; rest assured your data will be in safe hands. Additionally, I have comprehensive knowledge of Android's Call State Listener and Foreground Service implementations, as well as call recording methods utilizing voice communication or voice calls. My deep understanding of Android OS compatibility across leading device manufacturers (Samsung, Xiaomi, Vivo, Oppo) is an added advantage - to ensure the app performs flawlessly on all target devices.
₹12.500 INR 7 gün içinde
0,0
0,0

Hello, Hope you are doing well. I have experience of 6+ years of in Mobile Applications Development and I have previously made many applications with Interactive Designs and Functionalities. I have reviewed your requirement. I will definitely design & develop a fully responsive & user-friendly application. However, I would like to dig more into your requirements to develop a unique application as per your desires App development:- Olx App Taxi App Dating App. Educational App Multivendor App. Hotel and Restaurant Booking App. Doctors/ hospital management App. Please have a look at my portfolio link : https://www.freelancer.com/u/khushiArt Best Regards Khushbu
₹13.500 INR 20 gün içinde
0,0
0,0

With a deep background in AI automation and system design like the one you're requesting, I'm confident that my expertise will provide the solid foundation needed for your Android Auto Call Recorder project. Over the years, I've honed my skills in AI Automation and Workflow Design, API Integration, as well as system design and integration which required meticulous planning and execution exactly like what your project entails. One thing that has set me apart is my ability to think big picture while still paying attention to every single detail. This is important because your system needs to be scalable for hundreds or thousands of users while ensuring every detail of call recording, auto-upload, and server sync is managed without any interruption or vulnerability. To build such a reliable system, knowledge about mobile device management (MDM) and staying up-to-date with Android device compatibility is crucial. My experience includes working with numerous device models to navigate these challenges successfully and deliver robust solutions. My rate for this project is currently reduced as I continue building my profile. So don't miss out on the opportunity to get high-value work done at an introductory price.
₹25.000 INR 7 gün içinde
0,0
0,0

I understand your requirement to build a secure, tamper-proof Android call recording system with centralized server sync, admin controls, and compliance-focused design. I can deliver clean, reliable end-to-end work across the Android app, backend APIs, and admin dashboard, with strong focus on security, scalability, and device-level enforcement. I have experience with enterprise Android services, background processing, and secure media pipelines, and I can start immediately. I would be glad to discuss scope alignment, timelines, and next steps in detail.
₹27.000 INR 5 gün içinde
0,0
0,0

I am a perfect fit for your project, understanding the need for an independent, tamper-proof Android call recording system that operates seamlessly in the background with automatic, secure uploads and zero employee interference. My expertise includes developing clean, professional, user-friendly, and fully integrated mobile apps with secure server synchronization, encrypted storage, and scalable backend solutions. While I am new to this platform, I have tons of experience and have done other projects off site. I would love to chat more about your project! Regards, Boris
₹28.150 INR 30 gün içinde
0,0
0,0

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