Cross-Platform PDF Editor App with digital signing

@abhisaini0188

Hello, Thank you so much for posting this opportunity it sounds like a great fit, and I’d love to be part of it! I’ve worked on similar projects before, and I’m confident I can bring real value to your project. I’m passionate about what I do and always aim to deliver work that’s not only high-quality but also makes things easier and smoother for my clients. Feel free to take a quick look at my profile to see some of the work I’ve done in the past. If it feels like a good match, I’d be happy to chat further about your project and how I can help bring it to life. I’m available to get started right away and will give this project my full attention from day one. Let’s connect and see how we can make this a success together! Looking forward to hearing from you soon. With Regards! Abhishek Saini

@rbtech1984

Hey There!!! ⭐⭐⭐⭐ A cross-platform PDF app with handwritten and digital PKI signing? That’s a super relevant and valuable tool — especially for today’s mobile-first professionals. I see you're looking to build a secure, intuitive experience that works seamlessly on both Android and iOS. ⭐⭐⭐⭐ Here’s my quick plan: • Use Flutter for true cross-platform development • Integrate PDFKit and OpenSSL libraries for PDF rendering and .PFX digital signing • Build an intuitive UI for touch-based handwritten signatures • Ensure the app meets modern UX standards and security best practices • Test rigorously on both iOS and Android devices for a smooth experience With 9+ years of experience building secure, user-friendly mobile apps, I bring strong expertise in PDF workflows, encryption, and responsive UI/UX. I focus on clarity, reliability, and results — always delivering with solid communication and care. Let’s team up to bring your vision to life — I’d love to hear more about your ideal flow. Best Regards, Farhin B.

@loinguyen254

As a seasoned mobile app developer, I recognize the immense significance of a robust and feature-rich PDF editing application in today's digital landscape. Throughout my 6-year career, I've honed my skills perfecting user-friendly interfaces and platforms. Crucially, I have an advanced understanding of manipulating PDF files and integrating digital signatures with both handwritten and certificate authentication. My experience developing e-commerce platforms and social networks attests to my ability to construct highly functional and secure applications. I am fluent in Java/Kotlin for Android development, Swift for iOS, and even Flutter and React Native frameworks-as such, a cross-platform project holds no challenges for me. Regarding relevant projects, I can present my work on an educational app with offline functionality where students could interactively annotate PDF documents with handwriting notes on top of imported materials. Additionally, I've built an image recognition tool wherein - among other features - users could sign documents using a PKI certification exactly as required by your project. Together, these experiences underline my proficiency in executing your desired project and make me the best fit for the job. Let's start working together today to create the most comprehensive and user-friendly PDF Editor App on the market!

@devvoyager

Hello, You need a cross-platform mobile app (iOS & Android) that enables users to view, edit, and securely sign PDF documents. The app must support both handwritten signatures via the touchscreen and digital PKI certificate-based signatures (.PFX), while maintaining a clean, user-friendly interface. I propose building this app using Flutter or React Native for cross-platform efficiency, combined with a robust PDF SDK to handle editing, annotations, and secure signing workflows. Touchscreen signing will be integrated with a smooth canvas experience, while digital certificate signing will be handled using PKI libraries to ensure compliance and encryption. The app will also feature a polished UI/UX to keep document signing intuitive for all users. I have strong experience developing document-focused mobile apps, including PDF annotation and secure signing solutions, with proven delivery for both iOS and Android. My portfolio includes projects that required advanced file handling, encryption, and seamless cross-platform performance. Let’s connect to discuss your preferred stack and finalize the roadmap.

@DeveloperStation

Hi Andre, We’ve developed several PDF-related apps, including ones with digital signatures and handwritten signatures. We also built a fully compliant e-signature solution that meets international standards. With our extensive experience in both iOS and Android, we can deliver a product that feels native on both platforms. We use a shared codebase for common features, which allows us to focus on optimizing platform-specific elements. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best, Adil

@decipherzone111

Hello there, I can build your cross-platform mobile app for Android and iOS with full PDF viewing/editing capabilities, including signing with both handwritten touch signatures and digital PKI certificates (.PFX). The app will have a user-friendly interface with smooth navigation and reliable PDF handling. I have 11 years of experience in mobile development, delivering document-focused applications with secure PDF editing, digital signing, and intuitive UI/UX optimized for both platforms. To proceed: 1. Do you prefer a cross-platform approach (Flutter/React Native) or native development (Kotlin/Swift) for this app? 2. Should the app also include features like PDF annotation (highlight, comments) or strictly focus on viewing and signing? I can share my portfolio and provide a timeline and budget after reviewing these details. Best regards.

@DanielvvBPO

Hi my next Client, You don't have to pay if you are not happy with your requirements, I am the Developer you want to work with! Let's get you going. I am equipped to develop a mobile app for Android and iOS that allows users to sign PDF documents with touch screen and digitally with .PFX certificates. With 15 years of experience in mobile app development off-platform, I ensure a seamless, user-friendly interface. Let's discuss your project further! Remember, your satisfaction is key. Regards, Daniel van Vuuren

@ClearScope

This project aligns perfectly with what I do. Your need for a mobile PDF viewing/editing app with touchpad and digital PKI signature capabilities fits my expertise. I excel in developing clean and intuitive mobile applications for iOS and Android platforms. While I’m new on freelancer.com, I bring extensive experience from outside the platform. I have a strong background in handling PDF files and UI/UX design, making me an ideal fit for this project. I would love to chat more about your project! Regards, Francois Randall

@SyncBase

Your project really caught my eye, it’s exactly the kind of work I enjoy and have successfully done before. I understand you need a mobile app for both Android and iOS with the ability to sign PDFs using a touchscreen or digital certificates. I’m confident I can deliver precisely what you're looking for. I focus on clear communication, reliable delivery, and making the process as smooth as possible. You won’t have to worry about micromanaging or chasing updates, I'll keep things on track and aligned with your goals. Do you have a specific deadline in mind for this project? I would love to chat more about your project! Regards, Kegan - SyncBase

@CFPdevelopers

Hi there, I am a seasoned mobile app developer with a strong background in creating user-friendly apps for both iOS and Android platforms. I specialize in handling PDF files and implementing unique features such as signing with handwritten signatures and digital PKI certificates. My expertise in UI/UX design ensures a seamless and intuitive user experience. I have successfully delivered projects similar to your requirements and would love to showcase my portfolio. Let's collaborate to bring your PDF viewing/editing app to life. Looking forward to discussing further details. Best regards, Christoff Fourie

@LeonBoshoff

Hi vwvw, I understand your need for a mobile app developer to create a PDF viewing and editing app that allows for both handwritten and digital signature capabilities. This project is right up my alley, with proven experience in developing user-friendly mobile apps for both iOS and Android. I've worked extensively with PDF files and have a strong background in UI/UX design. Although new to Freelancer.com, I have a solid track record of delivering results on similar projects off-platform. If this sounds like a good fit, I’d be happy to dive deeper into your ideas! Cheers, Leon Boshoff

@adily1

Hi Andre S., I understand you need a mobile app developer to create a PDF viewing/editing app with features like handwritten signing and digital signing via .PFX certificates. I specialize in such mobile solutions, ensuring user-friendly interfaces and robust functionality tailored for both iOS and Android platforms. I am Adil Yousuf, with over 6 years of experience in Mobile App Development, specializing in iPhone and Android applications, UI/User Interface design, and handling PDF files efficiently. My background aligns perfectly with your project requirements. Here are my relevant portfolio links showcasing similar projects: https://www.freelancer.com/u/adily1 I am eager to bring your vision to life. Thanks, Regard, Adil Yousuf

@tknologic

With over 15 years of experience in IT across various industries, I bring a unique perspective to mobile app development. My expertise includes both technical proficiency and project management skills, ensuring timely and successful project completion. Though new to freelancing, my specialization in this field guarantees high-quality results. I am well-equipped to handle your PDF viewing/editing app project, boasting proficiency in mobile app development for iOS and Android, handling PDF files, and UI/UX design. I have the necessary skills to incorporate features such as signing PDFs with handwritten signatures and digital certificates. I am eager to discuss your project further. Kindly consider my bid for a successful collaboration. Kindest Regards, Duane Hugh Butler

@Yusrazubair1000

Hi Andre S., I have carefully reviewed your job description and am confident that my expertise in mobile app development aligns perfectly with your needs. I have extensive experience in developing apps for both iOS and Android and have successfully completed several projects that involve PDF handling and signature functionalities. Before we proceed, I would appreciate the opportunity to ask a couple of questions: 1) Are there any specific design preferences or guidelines you have for the user interface? 2) Do you have any requirements for the storage and management of signed PDFs? 3) What is the timeline for this project, and are there any particular milestones we should aim for? Why Choose Me? - 250+ large projects completed - No negative feedback in 5+ years - 5-star ratings on the latest 100+ projects I have worked on similar projects that required PDF viewing and editing features along with signature capabilities. I would be happy to provide you with my portfolio for further insight into my work. Availability: 9 AM - 9 PM Eastern Time (Full-time freelancer) Let's chat some more, and I'll send you my latest work privately. Best, Syeda Yusra Zubair

@TappitWeb

Hi, This is very doable, I can get it working cleanly and reliably. I understand the importance of creating a mobile app for both iOS and Android that allows users to sign PDFs with both handwritten signatures and digital PKI certificates. This requires a user-friendly interface to ensure seamless functionality. While I’m new to Freelancer, I’ve delivered solid results for clients in the same space. Let’s connect. I’d love to move forward with your project. Regards, Ernst

@afshan2176

Hello Andre S., I've just reviewed your project description regarding the Cross-Platform PDF Editor App with digital signing and I'm confident in my ability to meet your expectations. With over 7 years of experience as a Senior Graphic Designer, I possess a strong skill set in Android, iOS Development, iPad, Mobile App Development, User Experience Research, iPhone, Android App Development, Cryptography and UI / User Interface I kindly request you to take a moment from your busy schedule to explore our portfolio, where you can see the quality of my work and read feedback from previous clients: [Portfolio Links] https://www.freelancer.com/u/afshan2176 Could you please specify the final file formats you'll require? Feel free to award me the project so that we can discuss it further. Looking forward to connecting with you. Best regards, Afshan Z.

@Nickii21

I can help bring your vision to life, if not it's FREE. The PDF viewing/editing app will feature seamless signing with a touchpad or digital certificate. With years of mobile app development experience, a strong PDF handling background, and UI/UX design expertise, your app will be clean and professional. While I am new to freelancer, I have tons of experience and have done other projects off site. I would love to chat more about your project! Regards, Nickii

@nazrudyWorker1

As a seasoned mobile app developer with comprehensive knowledge in Android app development using Java and iOS app development, I am confident in my ability to create a cross-platform tool that meets your specific requirements. Over the course of my career, I've successfully built and launched various applications, showcasing my proficiency in handling PDF files, among other crucial skills such as project management, UI/UX design and testing. In my portfolio of similar projects, you'll see evidence of my strong capability to deliver tailor-made solutions that precisely match client needs. Given the multifaceted nature of this job, ranging from developing a seamless interface to meticulous attention to security measures for digital signing, my well-rounded skill set in both app development and UI/UX design makes me an ideal candidate for the task at hand.

@rusned

As a seasoned Full Stack Developer with a comprehensive background in mobile app development for over 8 years, I'm confident that I can deliver the cross-platform PDF Editor App you need for both iOS and Android. My skillset includes expertise in handling PDF files and a robust understanding of UI/UX design that ensures your app is not just functional, but user-friendly too. What sets me apart is my eagerness to blend the best of frontend UX with backend architecture to offer a fast, responsive, and smart digital solution like yours. Additionally, my familiarity with relevant programming languages including JavaScript and SQL as well as frameworks like React and Express aligns perfectly with your requirements. Drawing from my rich technical capabilities in designing secure data-driven systems using languages like Python, I'll ensure that your app allows users to sign PDFs with ease using a handwritten or digital PKI certificate option. As an added value, I offer strategic input for long-term collaborations, which will be highly beneficial given the nature of this project. Let's join forces to build something amazing!