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I need a cross-platform mobile application (iOS and Android) that lets my team complete three existing field forms on-site, have room to expand into other forms, stores every submission on our own servers, and instantly turns each form into a polished, client-ready PDF. The entire codebase and all data must remain under my ownership—no third-party clouds or subscription platforms. Security is non-negotiable. The build and deployment have to align with ISO 27001 controls: encrypted local storage, TLS-protected transfer to our internal network, role-based access, audit logging, and clear backup/restore procedures. I already have clean PDF layouts ready; your workflow can use any stack you prefer (Flutter, React Native, or native) as long as the finished documents match that professional look. A lightweight web dashboard for user management and data export would be a welcome extra. The timeline is tight—ASAP—so I’m looking for someone who can show rapid progress and hand over clean, well-documented code. Deliverables • iOS & Android app covering the three forms • Server component on our local infrastructure that stores data and renders PDFs • Source code with build instructions confirming my sole ownership • ISO 27001 compliance checklist for build and deployment • Brief remote hand-over and training session Acceptance criteria: each form flows end-to-end, generates an accurate branded PDF, and the submission appears in our on-prem database without touching external services.
Project ID: 40682506
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430 freelancers are bidding on average $2,077 CAD for this job

Building this as an on-premise, security-focused system requires a different approach from a typical cloud-based forms app. I understand that your key requirement is complete ownership of the application, source code and data, with no dependency on third-party clouds or subscription platforms. I can develop the cross-platform iOS and Android application with a modular form architecture, allowing the initial three field forms to be completed on-site while keeping the system ready for future forms. My recommended approach would be Flutter for the mobile application, backed by a self-hosted API and database deployed entirely on your internal infrastructure. Key areas I would focus on: • Modular, expandable field-form architecture • Offline-capable data capture with encrypted local storage • TLS-secured synchronisation with your internal servers • Role-based access control • Audit logging for critical actions • On-premise database and server deployment • Server-side generation of branded, client-ready PDFs Given your tight timeline, I would suggest starting with the core architecture and one complete form-to-PDF workflow first, allowing you to validate the approach quickly before completing the remaining forms. Portfolio: https://www.freelancer.com/portfolio-items/11539740-microlent-systems-portfolio I can provide a clear milestone plan covering architecture, mobile development, server deployment, PDF generation, security testing and handover. Jenifer
$2,250 CAD in 45 days
9.6
9.6

The hard part here is not the three forms themselves; it is making offline/field use, on-prem storage, PDF fidelity, and ISO 27001-style controls work together without relying on outside services. I’d structure this as a cross-platform app with encrypted local storage and queued sync, backed by an API on your own infrastructure that stores submissions, logs activity, and renders the final branded PDFs to match your existing layouts. I’ve worked on custom builds where ownership, deployment control, and security mattered more than flashy UI, including role-based workflows, server-side document generation, and clean handover documentation. For a project like this, the first priority is locking down the form schema, PDF mapping, and sync/security flow so rapid progress doesn’t create rework later. A lightweight admin panel for user management/export can also be included if scoped properly. - Do your three current forms already exist in a structured format, or only as the finished PDFs? - What does your on-prem environment look like for deployment: Windows/Linux server, preferred database, and internal API constraints? - Do you need offline submission with delayed sync from the field, or will devices always have network access?
$1,500 CAD in 7 days
9.7
9.7

Hi — Elias here from Miami. I understand you're looking to build a cross-platform mobile application for your team to complete existing field forms. The goal is to streamline processes and enhance productivity. What usually matters most here is ensuring the application is scalable and maintainable. A common issue in systems like this is managing data efficiently across devices while ensuring smooth integration with workflows. The tricky part is often handling user permissions and reliable data capture. My approach would involve using React Native or Flutter to create a robust architecture that prioritizes maintainability and scalability. I focus on building a solid backend to support your app’s needs, including efficient database management and smooth API integrations. This ensures your app can evolve as your requirements grow. I've worked on similar mobile applications that required intricate data handling and user roles, allowing me to anticipate and mitigate potential challenges. A few questions to better understand the scope: Q1 – What specific user roles will interact with the app, and what permissions are needed? Q2 – Are there existing systems the app needs to integrate with? Q3 – What are your expectations for scaling this app in the future? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$2,500 CAD in 10 days
8.9
8.9

I will use Flutter to create a secure, cross-platform mobile application for your field forms. Security measures will include encrypted storage, TLS transfer, access controls, audit logging, and on-premises data storage. The solution will be compliant with ISO 27001 standards, with full data ownership. A server component will store form submissions and generate PDFs, all without third-party clouds. You will receive complete source code, build instructions, and compliance documentation. Training and hand-over sessions will ensure a smooth transition. The scalable design will accommodate future expansions. Trust me to deliver a secure, performant, and user-friendly solution for your needs.
$2,700 CAD in 5 days
8.9
8.9

Hi Valuable Client, CnEL India can develop your secure cross-platform field-form application using **React Native**, with an on-premise backend so your data and code remain fully under your ownership. **Our methodology:** 1. **Form & PDF analysis** – Study the three existing forms and PDF layouts and convert them into reusable digital form structures. 2. **Mobile application** – Build responsive iOS/Android forms with validation, draft saving and room for adding future forms. 3. **Secure data architecture** – Store submissions on your internal server with encrypted local storage and TLS-protected communication. 4. **Access & auditing** – Implement role-based access, authentication, audit logs and controlled data permissions. 5. **PDF generation** – Develop server-side PDF generation that accurately reproduces your approved layouts, branding and submitted data. 6. **Backup & reliability** – Configure documented backup/restore procedures and error handling for reliable operation. 7. **Testing & security review** – Test end-to-end form submission, PDF accuracy, synchronization, permissions and security controls against the required ISO 27001-aligned practices. 8. **Deployment & handover** – Deploy to your infrastructure and provide source code, build instructions, documentation and training. We can also add the lightweight web dashboard for user management and data export if required.
$2,250 CAD in 15 days
9.1
9.1

Hi there! Did go through your job description and glad to share that I have experience in working with PHP, Dart, Flutter, Android/iOS, HTML, CSS, JS development platform. I have more than ten years of industry experience and have been the part of diverse industry verticals. I also have expertise with ReactJs,VueJs, Laravel, Magento, WordPress, PHP, API's development & Integration and CodeIgnitor along with XD and Figma. So can help you with the design as well. Looking forward to your response.
$1,500 CAD in 7 days
8.6
8.6

Hi! This is a well-defined build and your ISO 27001 alignment requirement and full on-prem ownership approach are exactly the right priorities for field data of this sensitivity. I'll build a cross-platform app in Flutter for clean single-codebase iOS and Android delivery, connected to your own server infrastructure for all data storage and PDF rendering using your existing layouts, with encrypted local storage, TLS transfer, role-based access, audit logging, and a lightweight web dashboard for user management and export, all delivered with full source code, build documentation, and a compliance checklist mapped to ISO 27001 controls. Quick question: are the three existing forms primarily text and checkbox based, or do they include field inputs like photos, sketches, GPS coordinates, or signatures that need to be captured and embedded in the PDF output? I've built secure mobile applications with on-premises server components, role-based access controls, and audit-ready data handling where client ownership of every line of code and every byte of data is non-negotiable from day one. Ready to show rapid progress from the very first sprint! Hafiz S.
$2,250 CAD in 7 days
8.5
8.5

With my extensive experience as a Senior Full-Stack Web & eCommerce Developer, I am the ideal candidate to build your Mobile Field Forms PDF Generator. My expertise in PHP, HTML, and Android development and my adeptness at working with Flutter and React Native make me well-suited to handle the cross-platform nature of this project. Moreover, I'm familiar with data encryption, role-based access management, TLS-protected transfer procedures, and have worked extensively with local storage for projects with stringent security requirements. In line with ISO 27001 controls, I'll ensure your data is securely stored and transferred to your internal network while providing you with clear audit logs that align with your backup/restore procedures. Lastly, I can create a lightweight web dashboard for user management and data export for increased convenience. My commitment to producing clean code and comprehensive documentation will facilitate a seamless hand-over and training session at project completion. You can be confident that as we work together, your needs will be met promptly without sacrificing quality or having any concerns about unwanted third-party accessibilities through dependable external services.
$2,250 CAD in 7 days
8.2
8.2

Hello, I can see the real pressure here: you need a secure on-prem mobile workflow that turns field data into polished PDFs without leaking ownership or control. That’s exactly the kind of app/server system I build with clean architecture and disciplined handover. I’ve worked on PHP/MySQL web systems, APIs, dashboards, and deployment flows, and I can structure this as a mobile app plus local server component that stores submissions, generates the branded PDFs from your existing layouts, and keeps everything inside your infrastructure. I’d also align the build with your ISO 27001 requirements: encrypted storage, TLS transport, role-based access, audit logs, and documented backup/restore steps. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. If you’re open, I can start by mapping the three forms, data model, auth rules, and PDF generation flow today, then move quickly into a working first pass. What is your preferred stack for the mobile app and local server, and do you already have the exact form field schemas for all three forms? Best regards, Asad
$1,500 CAD in 30 days
8.3
8.3

Hi, I can build a cross-platform mobile app for iOS and Android that meets your requirements, ensuring all data is securely stored on your servers without reliance on third-party services. With a focus on ISO 27001 controls, I will implement encrypted local storage, TLS-protected transfer, role-based access, audit logging, and clear backup procedures. Utilizing a stack like Flutter or React Native, I’ll ensure the PDF layouts match your professional standards. I’m committed to delivering the app quickly, complete with a brief training session to ensure smooth handover of the clean, well-documented code. Let’s get started on this project! Best Regards, Priyanka
$2,250 CAD in 7 days
8.5
8.5

With extensive experience in agile development, database management, and commercial proficiency in HTML, Mobile App Development, PHP, and React Native, Our AI focused freelancer team is the ideal fit to bring your project to life. We've built AI-powered solutions for several organizations and understand the importance of delivering a product that aligns with strict security protocols. We have previously ensured ISO 27001 compliance for multiple projects and can bring this expertise to your system. To sum up, our track record involves building products that automate manual work effectively while enhancing customer experiences through modern technology. Given this background, we believe we can build an efficient mobile app that fulfills all your requirements while ensuring clear ownership of codebase and data as you desire. Choose us for skillful execution, rapid progress updates, well-documented code base delivery. Let’s bring your vision of a convenient on-site form completion system into existence without touching external services.
$1,500 CAD in 3 days
8.3
8.3

HEY! I UNDERSTAND YOU NEED A SECURE CROSS-PLATFORM FIELD-FORM APP WITH ON-PREMISE DATA STORAGE, PDF GENERATION AND ISO 27001-ALIGNED SECURITY, WITH COMPLETE CODE AND DATA OWNERSHIP. I have 12+ years of IT experience with strong expertise in Flutter, React Native, backend development, APIs, databases, PDF generation and secure enterprise applications. I will deliver: • iOS & Android app for all 3 existing forms • Scalable architecture for adding future forms • Encrypted local storage and TLS-secured server communication • On-premise backend and database with no third-party cloud • Accurate branded PDF generation from your layouts • Role-based access and complete audit logging • Backup/restore procedures and security documentation • Lightweight admin dashboard for users/data export • ISO 27001-aligned development/deployment checklist • Complete source code, build instructions and handover training FLOW: Login → Complete Form → Secure Local Storage → TLS Transfer → On-Prem Database → PDF Generation → Client-Ready Document. I will prioritize rapid progress, clean architecture, security and full ownership transfer, ensuring no external service is required for the core workflow. I can start immediately and provide an initial working build quickly for your review. Thansk Chirstina
$1,500 CAD in 15 days
8.5
8.5

Good Day! I have carefully analyzed your project and can build a secure Flutter/React Native iOS & Android app with on-premise backend storage, encrypted local data, TLS, RBAC, audit logging, PDF generation, and a scalable form architecture. I’ll ensure the three forms work end-to-end, branded PDFs match your layouts, data stays entirely on your infrastructure, and provide documentation, ISO 27001 checklist, deployment guidance, and handover. I am eager to contribute my expertise and deliver top-notch results for your project. Let's discuss the project further in chat or let's have a quick call! Best regards, M Adeel.
$1,500 CAD in 3 days
8.1
8.1

Hi there, I specialize in developing secure, cross-platform mobile applications and can deliver a solution for your Mobile Field Forms PDF Generator project. Using Flutter, React Native, or native stack, I will create an iOS and Android app that allows your team to complete field forms on-site, store submissions securely on your servers, and generate polished PDFs instantly. Ensuring ISO 27001 compliance, the app will feature encrypted local storage, TLS-protected data transfer, role-based access, audit logging, and robust backup/restore procedures. Additionally, I will provide a user-friendly web dashboard for data management and export. I guarantee a rapid turnaround, clean codebase, and comprehensive hand-over process. Let's discuss further to bring your project to life efficiently and securely. Looking forward to collaborating with you.
$1,500 CAD in 45 days
7.8
7.8

The biggest constraint in your brief is ownership and security: no cloud services, no subscription dependency, and every submission staying inside your environment while still producing polished PDFs fast in the field. I’d approach it with a mobile app for iOS/Android that captures the three forms cleanly, stores data securely on-device until sync, and pushes to an on-prem backend that writes to your database and generates the final branded PDFs. I’ve handled projects where documentation, deployment clarity, and maintainability mattered just as much as the build itself, and that’s especially important when the client wants the full codebase handed over cleanly. With your timeline being tight, the fastest path is to define the exact form logic and PDF field mapping early, then move in staged deliveries so you can see working progress quickly. I can also factor in a simple admin dashboard if you want user control and export handled in the same system. - Which stack do you lean toward, if any: Flutter, React Native, or should I recommend based on the PDF and deployment needs? - Will the app require login through your existing internal user system, or should authentication be built inside this project? - Do any of the forms include photos, attachments, signatures, or only text/select/date style fields?
$1,500 CAD in 7 days
7.9
7.9

Howdy, When sensitive forms, PDFs, storage and processing all need to stay within your own infrastructure, the architecture has to be built around control and security from the start. I’d structure this as a self hosted mobile and server system rather than relying on Firebase or another managed backend, while keeping the form architecture flexible enough to support future additions beyond the three existing forms. I can build the iOS and Android application, on prem server component, PDF generation, authentication and role based access, encrypted local storage, TLS communication, audit logging, and backup and restore documentation. The existing PDF templates can serve as the reference for generating the final documents. I’d also provide the source code, deployment documentation, ISO 27001 control checklist, and handover training. Before starting, I’d want to confirm your on prem server environment and network and API requirements so the deployment is designed correctly from the beginning. Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best regards, Hammad Hassan
$1,750 CAD in 20 days
8.0
8.0

Hi, I'm interested in your mobile form project. I will build an ISO 27001 compliant Flutter app with a secure local server to generate your PDFs. Let’s discuss and get started! -AJ
$2,250 CAD in 7 days
7.6
7.6

Hi, The on-prem requirement is the part most people gloss over. Keeping data and PDF rendering off third-party clouds means the render engine and storage both live on your server, so I'd wire the app to submit over TLS to your internal API, encrypt local drafts on device, and render the branded PDFs server-side from your existing layouts. That keeps the audit trail and backups in one place you control. We build cross-platform apps in React Native with Laravel backends and self-hosted deployment. For a MENA finance summit we ran the backend and mobile app together over two years. ADFW: event platform, web and mobile. One question: are the three forms fixed fields, or do any include photos or signatures that go into the PDF? That shapes the storage schema. Which server OS are you on? Adil
$2,116.03 CAD in 21 days
7.7
7.7

Hi! This is something we can definitely handle — the requirements are well-scoped and the ISO 27001 angle is territory we take seriously rather than treat as a checkbox. Before I put a firm proposal together, the one thing that changes the architecture meaningfully is your server environment: what's running on-prem — Linux, Windows Server — and is the machine already reachable from the field via VPN or a private network, or does that connectivity need to be part of the build? The answer shapes how we handle TLS termination and whether we need to factor in any network setup on our end. For the app itself, Flutter is the right call here — one codebase, clean native feel on both platforms, and solid support for encrypted local storage so forms survive offline and sync securely once the device is back on the network. PDF generation would run server-side, matching your existing layouts precisely. The server component would be a lightweight API — Python or PHP — deployed on your infrastructure via Docker, handling data storage, PDF rendering, audit logs, and role-based access. The web dashboard for user management and export fits naturally on top of that same backend. The three forms, the PDF output, and the server component are the core — that's what we'd get working end-to-end first. The dashboard and the ISO 27001 checklist come right after, before handover. Happy to keep working through the details once I have clarity on the server side. Gustavo & the DoTheCode team
$2,040 CAD in 20 days
7.9
7.9

Hi, I’d be very interested in building this field-form application. Your requirements around **on-premise ownership, security, PDF generation, and future scalability** are clear, and I can build the solution without relying on third-party cloud or subscription platforms. ### Proposed approach I would recommend **Flutter** for the iOS/Android application, with a self-hosted backend deployed on your internal infrastructure. The architecture would be modular so additional forms can be added later without rebuilding the application. The solution would include: * iOS & Android app with the initial 3 forms * Secure encrypted local storage * TLS-protected communication with your internal server * Role-based authentication and access control * Complete audit logging * On-premise database and server-side data storage * Automated PDF generation matching your existing layouts * Backup and restore procedures * Lightweight web dashboard for user management/export if required * No external cloud services for application data or document processing * Full source-code ownership and deployment documentation Best regards
$2,300 CAD in 20 days
7.9
7.9

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