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I’m building a small, purpose-driven billing app that will run on Android phones and tablets. The flow is simple: I type in each sale, the data is stored in our Miracle database, a polished PDF invoice is generated on-device, and I can print or share that file immediately. Core requirements • Manual data entry screens built around a clean, straightforward UI • Automatic daily and monthly revenue totals, plus a sales-report screen with date-range filters • Real-time (or deferred, if offline) write-back to the existing Miracle DB schema • One-tap PDF creation that mirrors our invoice layout and supports native Android printing/sharing Reports Because “Sales reports” is the only extra feature I selected, the app just needs concise revenue and volume summaries—no inventory or customer modules. Export to CSV or PDF from the report view will keep things flexible. Deliverables - Complete Android Studio project (Java or Kotlin) with all source code - Miracle database scripts or lightweight API/service layer to connect the app - Signed installable APK - Short setup guide and walkthrough video or document Acceptance criteria 1. Invoices created offline sync automatically once a connection is restored. 2. PDF output matches the sample template I will provide. 3. Daily and monthly totals equal the figures in Miracle DB. 4. App runs smoothly on Android 8 through the latest release, phones and 10" tablets alike. Once we start I’ll share the DB schema, logo, and invoice design. Let me know your preferred tech stack, estimated timeline, and any similar work you’ve shipped.
ID do Projeto: 40151785
29 propostas
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Ativo há 13 dias
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29 freelancers estão ofertando em média ₹30.671 INR for esse trabalho

Hi I have read your requirements and I am sure I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. Please consider me and initiate a chat for further detailed discussion. Regards, Anju Logical Soft Tech Pvt Ltd, Indore(M.P)
₹25.000 INR em 7 dias
6,5
6,5

I have 21 years of software development experience, IIT graduate and working as Principal engineer, I have extensive experience with spring boot and Java, kotlin with mvc architecture and Database design, i I have built enterprise grade APIs, I have understood your requirement and can built it.
₹30.000 INR em 7 dias
5,7
5,7

I can build your Android billing app end-to-end with clean manual entry screens, offline-first syncing to the Miracle DB, accurate sales reports, and on-device PDF invoice generation. You’ll get a stable APK, complete Android Studio source (Kotlin/Java), DB integration layer, and clear setup documentation matching your invoice template.
₹25.000 INR em 7 dias
5,5
5,5

Hi, I am an IIT Grad and worked at fortune 500 companies and top BFSI firms in India. I will make it a reality for you. I will complete this project using Android SDK, SQLite for local database interaction, Apache PDFBox for PDF generation, and a custom UI built with Jetpack Compose to create a seamless and intuitive user experience. Kindly click on the chat button so we can discuss and get started. Will share you my prior projects done and my resume too. I have been doing freelancing since 2019 worked at top MNCs in both USA and India. Lets connect
₹12.500 INR em 7 dias
5,3
5,3

Hello. I know exactly how to build this for you. I understand you need a Native Android app that generates PDFs and syncs sales data back to your Miracle Accounting (SQL Server) database. My Approach (The Safe Way): - Offline-First Engine: I will use Room Database locally on the phone. This ensures the app works perfectly when the internet is down. - The Sync Layer (Node.js): Instead of exposing your SQL Server directly to the internet (which is dangerous), I will write a lightweight Node.js API that sits on your server. The App sends data to the Node API. The Node API safely inserts it into your Miracle tbl_AccountLedger or Sales tables. - PDF Generation: I will use the native Android PdfDocument class to generate pixel-perfect invoices that match your Miracle template. Relevant Experience: I recently built Project ORIA and Papyrus, which are offline-first apps that sync data when connection is restored. I specialize in this exact "Store-and-Forward" architecture. I am ready to review your Miracle Schema and start the API connector immediately. Best, Yousef
₹25.000 INR em 7 dias
3,8
3,8

✔ I deliver 100% usable apps — clean flow, accurate data Workflow Diagram Requirements & Invoice Review ⟶⟶ UI/UX Design ⟶⟶ Android App Development ⟶⟶ Offline Sync & DB Integration ⟶⟶ PDF & Reports Module ⟶⟶ Testing, APK Signing & Handover Key Highlights ✔ Purpose-built billing app — designed specifically for fast, manual sales entry on phones and tablets. ✔ Clean & simple UI — distraction-free screens focused on speed, clarity, and error-free input. ✔ Offline-first architecture — invoices and sales saved locally and auto-synced with Miracle DB when connectivity returns. ✔ Accurate reporting — automatic daily and monthly revenue totals with date-range filters for quick insights. ✔ Polished PDF invoices — one-tap PDF generation matching your provided invoice template exactly. ✔ Native Android sharing & printing — print or share invoices instantly via installed apps. ✔ Lightweight reports module — concise revenue and volume summaries, exportable to PDF or CSV. ✔ Wide device support — optimized for Android 8+ across phones and 10” tablets. ✔ Complete ownership — full Android Studio project, source code, APK, and documentation included. Best Regards, Fahad N Android App Developer | Offline-First Apps | Billing & Reporting Solutions
₹15.000 INR em 8 dias
3,1
3,1

With over 6 years of experience in creating scalable and performant digital solutions, I'm confident that I deliver exactly what you're looking for with this Android billing and PDF generation project. My extensive skill set encompasses not only Android app development, but also API development and Java programming among others - all crucial for realizing your unique requirements. For clean, straightforward UI design intuitive manual data entry screens, robust reporting functionality (with CSV and PDF export options) and seamless integration with Miracle DB - I've got you covered. Additionally, I have a deep familiarity with generating high-quality, customized PDFs on Android devices matching specific templates as required by your project. Moreover, I understand the value of your preferred tech stack and estimated timeline to align better with your expectations. Choosing me will guarantee not only efficient project management but also ongoing support post-delivery to maintain the long-term functionality of your app. Let's discuss further!
₹18.000 INR em 9 dias
1,8
1,8

Hello nisargp92, I'm Apurv Goel, an experienced Android App Developer with a strong background in creating efficient, scalable applications tailored to meet business needs. I have a proven track record of translating requirements into user-friendly solutions with a focus on performance tracking and workflow optimization. I understand your project requirements for the Android Billing & PDF Generator app. I will ensure a clean and intuitive UI for manual data entry, real-time data synchronization with the Miracle DB, and seamless PDF invoice generation. My expertise lies in developing custom solutions that align with client needs while maintaining clear communication and timely execution. Let's discuss further details in the chat to ensure a successful collaboration. Thanks, Apurv Goel
₹25.000 INR em 7 dias
0,0
0,0

This sounds very manageable, and I like that the scope is clear and focused. I can build a simple, reliable Android billing app that works offline, syncs cleanly with your existing Miracle database, and generates professional PDF invoices exactly matching your template. My focus would be on correctness, stability, and a smooth day-to-day experience rather than overengineering. The app will include: Clean manual data-entry screens that are easy to use on phones and 10" tablets Automatic daily and monthly totals with a simple date-range sales report Offline data entry with automatic sync once the connection is restored One-tap PDF invoice generation with native Android print and share support I’ll deliver the full Android Studio project, DB/API integration, a signed APK, and a short setup guide. Once you share the DB schema and invoice design, I’ll align everything early so totals and PDFs match your system exactly.
₹25.000 INR em 7 dias
0,0
0,0

Hello, I’ve reviewed your billing app requirements and I can confidently build a clean, offline-ready Android application that matches your workflow and acceptance criteria. I’m an Android developer with 9+ years of experience, experienced in billing, invoicing, PDF generation, and database-driven apps. What I’ll deliver: • Simple and clean manual sales entry UI (phones & 10” tablets) • Automatic daily and monthly revenue totals • Sales reports with date-range filters • Offline-first data handling with auto-sync to your existing Miracle DB • One-tap PDF invoice generation matching your provided template • Native Android print and share support • PDF/CSV export for reports Tech stack: Kotlin (or Java), MVVM architecture, Room for offline storage, WorkManager for background sync, REST API/lightweight service for Miracle DB, Material Design UI. Deliverables included: ✔ Complete Android Studio project ✔ Miracle DB integration layer ✔ Signed APK ✔ Setup guide + walkthrough document/video Timeline: ~14–18 days Compatibility: Android 8 to latest, phones & tablets Once we start, you can share the DB schema, logo, and invoice design. I provide regular updates and clean, maintainable code. Looking forward to working with you. Best regards, Kevin Niranjani Senior Android Developer
₹25.000 INR em 7 dias
0,0
0,0

Hello, I have carefully read your project description. I can help with data entry, copy paste and typing related tasks with accuracy. I am a beginner freelancer but I am hardworking and ready to start immediately. I will deliver quality work on time. Thank you.
₹25.000 INR em 7 dias
0,0
0,0

Hi, I saw you run an Android billing app project, and it caught my eye because I recently delivered a sales app that improved data sync reliability by 40% using deferred offline writes. I will implement real-time Miracle DB synchronization with conflict resolution tailored to your schema—does the database allow REST API integration, or should I handle direct SQLite access? With 7 years in Android development and database integration, I work as a dedicated specialist, ensuring your project receives my undivided attention and matches my specific skill set. I’m available to hop on a chat or exchange messages to discuss how we can get started on this immediately. When would be a good time for us to connect? Regards, Bjork Bronkhorst
₹28.150 INR em 30 dias
0,0
0,0

Hi, I can build your Flutter-based Android billing app with offline-first support, fast manual entry, accurate reports, and one-tap PDF invoice generation. The app will store data locally when offline, auto-sync with your Miracle database, generate invoices matching your template, and support native print/share. Daily and monthly revenue reports with date filters and CSV/PDF export will be included. I’ve delivered similar production Flutter apps with offline sync, reporting, and PDF workflows. Timeline: 3–4 weeks Stack: Flutter, local DB, background sync, PDF generation Once you share the DB schema and invoice design, I can start immediately. Best, Mustafa
₹28.000 INR em 14 dias
0,0
0,0

Hi, I can build this billing app end-to-end with a focus on reliability, offline support, and a clean, straightforward UX. Proposed tech stack Android: Kotlin, Jetpack Compose, MVVM Local storage: Room (offline-first) Sync: WorkManager for deferred Miracle DB sync PDF & Printing: Android PdfDocument / iText with native print & share Reports: Room-based aggregations with date-range filters, CSV/PDF export Backend: Lightweight REST layer or direct integration based on Miracle DB schema Key points Invoices created offline and synced automatically when connectivity is restored On-device PDF generation matching your provided invoice template Daily and monthly totals validated against Miracle DB Optimized for Android 8+ phones and 10" tablets Timeline Core billing + offline sync: 7–9 days PDF invoices + printing/sharing: 3–4 days Reports + exports: 2–3 days Testing, APK, documentation: 2 days Total: ~2.5–3 weeks Deliverables Complete Android Studio project (Kotlin) Signed APK DB scripts / API layer Setup guide + walkthrough document/video I have hands-on experience implementing offline-first Android apps, PDF generation, and report-style data flows, and I’m comfortable working with existing database schemas. Once you share the Miracle DB schema and invoice design, I can start immediately. — Jatin
₹12.500 INR em 15 dias
0,0
0,0

I propose to build a lightweight, purpose-driven Android billing application optimized for phones and tablets. The app will allow quick manual entry of sales, securely store data in the Miracle database, and generate a polished PDF invoice directly on the device, ready to print or share instantly.
₹25.000 INR em 7 dias
0,0
0,0

Rajkot, India
Membro desde jan. 16, 2026
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