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Desidero sviluppare una mia agenda digitale, semplice da usare ma capace di sincronizzarsi perfettamente tra più computer. Funzionalità irrinunciabile • Sincronizzazione tra dispositivi: deve aggiornarsi in tempo reale quando lavoro dal portatile dell’ufficio o dal PC di casa. Possibili estensioni future Pur concentrandomi ora sui computer, lascio la porta aperta all’eventuale integrazione con smartphone o tablet, quindi preferisco un’architettura scalabile. Mi aspetto: 1. Interfaccia pulita e intuitiva per la gestione di appuntamenti, attività e note. 2. Backend che gestisca la persistenza dei dati e la sincronizzazione in cloud o tramite server self-hosted (sono aperto a suggerimenti su stack e hosting). 3. Codice ben documentato, così da poterlo mantenere o ampliare in autonomia in futuro. 4. Breve guida d’uso o video walkthrough al termine del lavoro. Tecnologie a tua scelta, purché garantiscano stabilità e semplicità di distribuzione cross-platform (ad esempio Electron, Flutter desktop, Progressive Web App con service worker). Indica nel preventivo: tempistiche, stack proposto e fase di test che prevedi. Sono disponibile per chiarimenti rapidi via chat durante tutto il progetto.
Project ID: 40696655
187 proposals
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Active 4 days ago
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187 freelancers are bidding on average €24 EUR/hour for this job

A Warm Hello! We are readily available to start working on this project!! We’d be happy to develop your simple, reliable, and cross-platform digital diary with seamless synchronization between your office laptop and home PC, while keeping the architecture flexible enough for future mobile/tablet applications. Our goal would be to build a clean application that feels lightweight and intuitive while providing a robust synchronization layer underneath. We are also comfortable working collaboratively through chat for quick clarifications and feedback throughout the project. We’d be glad to discuss your preferred hosting model—cloud-hosted or self-hosted—and recommend the most suitable option based on your privacy, cost, and maintenance requirements. We look forward to building a reliable digital diary that you can use every day and continue expanding in the future. Regards Ana
€18 EUR in 40 days
10.0
10.0

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in App Development, Flutter, PHP, Website Design, Backend Development, HTML, Graphic Design As a preferred freelancer in the top 1%, I have done 400+ projects here on freelancer.com, I have 4.9 ratings out of 5 on average, which showcases my quality of work and timely delivery. Key Highlights: - Free Hosting Support on the Cloud or any desired platform. - Free 3 months of post-delivery support to ensure that our client doesn’t face any challenges after the launch of the project. - Free Dedicated tester on projects to ensure quality delivery, so clients don’t need to act as a tester. - 10+ Years experience UI/UX team to ensure intuitive UI. Portfolio: https://www.freelancer.com/u/Microlent Please open the chat and send me a message, so we can have a more detailed discussion about the project to give you the project timeline and cost. Thank you for considering my services. I look forward to engaging in a productive conversation and understanding how I can be of assistance in bringing your project to life. Regards Rajesh Rolen
€18 EUR in 40 days
9.5
9.5

The key part here is not just building a digital agenda UI, but making sure synchronization stays reliable between multiple computers without conflicts or stale data. For this kind of project, I’d keep the first version simple and stable: a clean desktop-friendly interface, a documented backend/API layer, and a sync approach designed so mobile support can be added later without rebuilding the core. I’d likely recommend a Progressive Web App or Electron-based app with a cloud-backed database, depending on whether you want easiest distribution or a more app-like desktop experience. I’ve worked on custom web apps where the real challenge was data consistency, usability, and keeping the codebase maintainable rather than overengineering the stack. I can also include a short usage walkthrough at the end. - Do you already prefer PWA vs Electron, or would you like my recommendation based on maintenance and deployment? - Should the first version support shared calendars/users, or only one private account syncing across your own devices? - For hosting, would you prefer a managed cloud setup or a self-hosted option?
€18 EUR in 40 days
9.8
9.8

Hi there, We understand you're looking to develop a personalized digital agenda that synchronizes seamlessly across multiple computers, with potential future extensions to smartphones or tablets. Our team at Webbook Studio has experience in building similar projects, such as a learning platform website for children using PHP, WordPress, and custom design, as well as a music voting mobile app using React Native and Node.js. We can leverage our expertise in backend development, cloud computing, and cross-platform technologies like Electron or Flutter to deliver a scalable and user-friendly digital agenda. We'll provide a clean and intuitive interface, a robust backend for data persistence and synchronization, well-documented code, and a short user guide. Can you tell us about your preferred cloud hosting options or if you have any specific requirements for the backend stack? Feel free to message us to discuss the details! — Webbook Studio
€25 EUR in 40 days
9.3
9.3

Hi, I'm Elias, a Miami-based senior software engineer with 20 years of experience. I specialize in web and app development, particularly in creating user-friendly solutions that sync seamlessly across devices. I understand you're looking to develop a personalized digital agenda that is easy to use and capable of perfect synchronization. I have built similar systems focused on enhancing user experience. My projects often prioritize secure architecture, responsive UI, and maintainability. I would approach your project in these phases: 1) Understand your specific requirements and desired features. 2) Design the user experience and overall architecture. 3) Develop core functionalities along with necessary integrations. 4) Conduct thorough testing to ensure everything works smoothly. 5) Deploy and provide support to ensure your satisfaction. Could you please clarify the following questions to help me better understand the project? 1) What specific features do you envision for the synchronization process? 2) Are there particular user roles or permissions I should consider? 3) How do you plan to manage data storage and security for the agenda? I've built similar systems before, but most of my projects were under NDA, so I can't share links. However, I'm happy to discuss the architecture and features in detail. I can also ensure a scalable architecture that will grow with your needs.
€50 EUR in 10 days
8.9
8.9

★★★ ELECTRON SPECIALIST ★★★ Hi, The real-time synchronization requirement between multiple devices is pivotal for your digital agenda. I propose utilizing a cloud-based backend to ensure data consistency across your office laptop and home PC. This will involve implementing WebSocket for real-time updates, allowing changes made on one device to reflect instantly on others. Given your openness to future mobile integration, I will design a scalable architecture that can accommodate additional platforms without significant rework. For the user interface, I will focus on creating a clean and intuitive layout for managing appointments, tasks, and notes, ensuring that the user experience remains straightforward. I will also ensure that the code is well-documented, facilitating future maintenance and enhancements. A brief user guide or video walkthrough will be provided at the project's conclusion to assist you in navigating the application. To begin, I will need access to any existing data structures you may have and your preferences for hosting solutions. I look forward to discussing the proposed stack and testing phases in detail. Thanks!
€25 EUR in 40 days
8.4
8.4

Hello, I can develop your digital planner with a clean, intuitive interface and, most importantly, reliable real-time synchronization across multiple computers. I recommend a responsive PWA with a secure backend and cloud database. This keeps deployment simple today while providing a scalable foundation for future mobile and tablet applications. Appointments, tasks, and notes management. User accounts and cross-device synchronization. Secure backend and persistent database. Modular, scalable architecture. Desktop-first responsive interface with future mobile support. Clean, well-documented and maintainable code. Testing for synchronization, authentication, responsiveness, and conflict handling. Short user guide/video walkthrough after delivery. Proposed stack: React/TypeScript + PWA + Node.js/NestJS + PostgreSQL, with WebSockets for real-time synchronization. I’m available to start immediately and can quickly finalize the technical approach with you before development begins. Best regards Raheel
€27 EUR in 40 days
8.2
8.2

Hi, I can develop your custom digital planner with a clean, intuitive interface for appointments, tasks, and notes, with real-time cloud synchronization between your office and home computers. Proposed stack: PWA + React/TypeScript + Node.js + PostgreSQL, with a scalable architecture ready for future mobile apps. I’ll provide clean, documented code, deployment, a user guide, and a short walkthrough video. Available to start immediately. Best regards ADEEL
€27 EUR in 40 days
8.2
8.2

HELLO, POSSO SVILUPPARE LA TUA AGENDA DIGITALE CON SINCRONIZZAZIONE IN TEMPO REALE, INTERFACCIA SEMPLICE E UN'ARCHITETTURA PRONTA PER FUTURE APP MOBILE. Ho analizzato attentamente il progetto e comprendo che la priorità è avere un'agenda personale facile da utilizzare, con appuntamenti, attività e note sempre sincronizzati tra PC e portatile. >>> Sono disponibile a lavorare 40-45 ore a settimana <<< >>> Potrai monitorare tutti i progressi del progetto tramite il tracker <<< Ho 11+ anni di esperienza nello sviluppo full-stack e posso realizzare una soluzione cross-platform stabile e facilmente manutenibile. Per questo progetto proporrei una PWA con React/TypeScript e backend Node.js + PostgreSQL, con sincronizzazione cloud in tempo reale e possibilità di estensione futura verso smartphone e tablet. Mi occuperò dell'interfaccia, autenticazione, gestione dei dati, sincronizzazione, sicurezza, gestione offline/online e compatibilità desktop. Il codice sarà ben strutturato e documentato per consentirti di modificarlo o ampliarlo in futuro. Prevederei una fase dedicata ai test di sincronizzazione, gestione dei conflitti, affidabilità e compatibilità tra dispositivi, seguita dal deployment e da una breve guida/video walkthrough. POSSO INOLTRE DEFINIRE TEMPISTICHE E STACK DETTAGLIATO PRIMA DELL'INIZIO DELLO SVILUPPO. Facciamo una breve call per discutere il workflow della prima versione. Grazie, Christina
€18 EUR in 40 days
8.0
8.0

Hi! This is well within what we do, and there's something appealing about building a personal tool with clean architecture from the start rather than bending a generic solution to fit. Before I close the scope, the one thing I need to understand is the hosting side: are you comfortable managing a small server yourself (full control, no vendor dependency), or would you prefer a fully managed cloud service where you don't touch infrastructure? That choice shapes the backend structure and what the sync relies on — and it's the decision that affects your long-term maintenance burden more than anything else in the brief. On how we'd build it: a Progressive Web App is the strongest fit here. It runs in any browser without installation, syncs in real time across your office laptop and home PC, and extending it to mobile later means the same app — no separate codebase. We'd pair it with a Python backend handling authentication, data persistence, and sync logic. Appointments, tasks, and notes are all well-defined scope. We'd structure the data model cleanly from the start so adding features later doesn't require rewriting anything. Code documentation and the usage walkthrough are standard in our deliveries. Gustavo & the DoTheCode team --- P.S. We don't speak Italian well enough to work in it, so we write in English. If it helps, feel free to use a translator — we're happy to keep the conversation going either way.
€26 EUR in 15 days
7.9
7.9

Hello, Drawing from my 10+ years of experience in web and app development, I'm confident I can deliver your desired personalized digital agenda with exceptional quality. Syncing between devices has become a common yet crucial demand; our expert team will ensure real-time updates that allow for fluid work transitions between your office laptop and home PC. Moreover, while currently concentrating on computers, we will retain the architecture's scalability for any future integration with smartphones or tablets as you've left the door open to. As a company, we put an emphasis on user experience - delivering an interface that is clean and intuitive for managing appointments, activities, and notes is one of our core strengths. We'll design a backend that handles data persistence and cloud synchronization with precision, ensuring it meets your preference whether hosting on a server or cloud-based. And most importantly, we'll document the code thoroughly empowering you to maintain or extend it independently in the future. We propose leveraging Flutter desktop to ensure stability and simplicity of distribution across all platforms. With this choice, we can craft Progressive Web Apps (PWA) that are service worker enabled. It would not only allow cross-platform operability but also guarantee a high level of security along with an unbeatable performance. Thank you
€18 EUR in 40 days
8.0
8.0

Ciao, posso sviluppare la tua agenda digitale con una struttura semplice da usare ma progettata per una sincronizzazione affidabile e in tempo reale tra computer. Per questo progetto proporrei una PWA con backend e database centralizzati, così da mantenere i dati sincronizzati e avere una base facilmente estendibile in futuro a smartphone e tablet. Organizzerei il lavoro in fasi: interfaccia per appuntamenti, attività e note, backend e sincronizzazione, quindi test su più dispositivi e browser per verificare stabilità e comportamento in diverse condizioni di connessione. Come tempistica, prevedo circa 2-3 settimane per una prima versione completa e testata. Alla consegna includerò codice documentato, una breve guida d’uso e un walkthrough. Cordiali saluti, Ivane
€27 EUR in 40 days
7.5
7.5

As the leader of Walking Dreamz Technologies, a highly skilled and experienced development team; I am confident in our ability to complete your project to exceed your expectations. With over 13 years of successful projects under our belt and 99% positive feedback from clients, we have proven that we not only meet the brief at hand but also build systems that hold up well in the long term. Your desire for a simple, cross-platform synchrony is in line with our core expertise. We have created a number of applications on MERN stack, PHP, HTML and Flutter with this similarity in mind. Scalability is never an issue as we design all our applications to be easily updated to integrate with different types of devices. Further reinforcing our suitability for this task is my company's knack for clean code and comprehensive documentation. Not only will your project have an intuitive user interface but the code will be well-commented. We also offer post-launch support ensuring any questions or issues are handled effectively. Trust us to build you a rock-solid digital agenda that will be future-proof and perfectly tailored to your needs!
€18 EUR in 40 days
7.8
7.8

Since the agenda has to stay perfectly aligned between different computers, the backend and sync logic matter just as much as the interface. I’d keep the product focused on the essentials first—appointments, tasks, notes, and dependable cloud sync—so the foundation is solid before adding mobile extensions later. A good path here would be either a desktop-oriented PWA or Electron with a documented backend and clear deployment flow. I’ve worked on builds where the success of the project depended on simplicity for the user, but also on having code that the owner could maintain and expand later without fighting the original architecture. At the end, I can provide a short guide and structured handoff notes so future updates are easier. - Do you want calendar-style views only, or also list/kanban-style task views? - Should reminders or notifications be part of the first release? - Are you open to a cloud database service first, with self-hosting kept as a second-phase option?
€19 EUR in 40 days
7.3
7.3

As a seasoned Full-Stack software engineer with a knack for finding innovative solutions, I can guarantee you a seamless digital agenda tailored specifically to your needs. My 10 years of experience allow me to tackle any task with proficiency, and your project is no exception. I'm well-versed in both front-end and back-end development, especially skilled in the use of technologies such as Flutter and HTML. What separates me from the crowd is my commitment to providing high-quality work that doesn't just meet your expectations but exceeds them. You deserve an intuitive and functional interface for managing your schedule, tasks, and notes, which is exactly what I plan on delivering. On top of that, your data persistence and synchronization will be handled securely using a cloud or server self-hosted approach. Lastly, I understand the importance of being able to navigate and expand upon a project in the future, so I make it a point to document my code meticulously. Additionally, rest assured that I'll provide you with not only a reliable digital agenda but also ongoing technical support and guidance even after our work is done. Let's connect and delve deeper into these exciting project details!
€27 EUR in 40 days
7.5
7.5

Buongiorno, posso sviluppare un’agenda digitale intuitiva per appuntamenti, attività e note, con sincronizzazione in tempo reale tra computer e un’architettura pronta per future estensioni mobile. Suggerisco una Progressive Web App con backend sicuro, database sincronizzato e possibilità di hosting cloud o self-hosted, così da semplificare distribuzione e manutenzione. Prevederò test funzionali, verifica della sincronizzazione offline/online, gestione dei conflitti e controllo multipiattaforma. Il progetto includerà codice documentato e una breve guida d’uso o video walkthrough. La proposta dettagliata con tempistiche e stack definitivo potrà essere definita dopo una rapida conferma dei requisiti principali. Cordiali saluti
€21 EUR in 24 days
7.2
7.2

Hi, I went through your project details and understand what you're looking to achieve. I'd be interested in working with you on this. Based on the requirements you've shared, I can handle the project from start to completion while keeping the work aligned with your expectations, timeline, and desired outcome. My approach is straightforward: first, I'll make sure the requirements and expected deliverables are clear. Then I'll complete the work in structured stages, share progress along the way, incorporate your feedback, and deliver the final work after everything has been reviewed. Before we begin, I have a couple of questions about your requirements that will help me understand the scope more accurately. Feel free to message me so we can discuss the details and determine the best way to move forward. Best regards, Anum
€27 EUR in 40 days
6.7
6.7

Hello, I'm Denis, a full-stack developer who has built synced applications across multiple platforms. I understand your need: a personal agenda synchronized in real-time between your office laptop and home PC, with a clean interface and future mobile support. The core challenge is real-time synchronization—changes on one device must appear instantly on the other without conflicts or data loss. The architecture you choose will determine how easily you can add mobile support later. I'd approach this in phases. First, I'd clarify your hosting preference since it affects the entire design. Self-hosted gives full control but requires server management; cloud hosting is simpler operationally. Then I'd build a backend API for data persistence and sync logic, followed by a desktop frontend using either Electron or a Progressive Web App based on your preference. For synchronization, I'd implement conflict resolution that timestamps all changes and uses operational transformation or CRDT patterns to merge updates from multiple devices, preventing data loss. I've worked on similar systems handling offline scenarios and eventual consistency. The key is building the sync layer correctly upfront rather than retrofitting it later. The main risk is unclear requirements around offline behavior. If you need the app to work without internet and sync later, that's more complex. I'd want to confirm that early. I can start right away. Let's discuss the details. Thanks, Denis.
€18 EUR in 40 days
6.4
6.4

Ciao, sono Mateo, da Toronto, felice di aiutarti con questo. Un'agenda che si sincronizza davvero in tempo reale tra ufficio e casa funziona solo se il backend, non il client, decide lo stato corretto quando due dispositivi scrivono quasi insieme, quindi partirei da un'architettura cloud-first con un backend che gestisce la persistenza e la sincronizzazione, lasciando il client come semplice interfaccia. Userei una Progressive Web App per garantire distribuzione cross-platform senza installazioni complicate, con margine per estendere a smartphone e tablet in futuro senza riscrivere la base. Codice ben documentato e una breve guida finale sono scontati nel mio modo di lavorare, non un extra. Preferisci un backend cloud gestito (piu veloce da mettere su) o un server self-hosted fin da subito, anche se richiede piu tempo di setup iniziale?
€30 EUR in 40 days
6.5
6.5

Hello, I understand that you are looking to develop a personalized digital agenda that syncs seamlessly across multiple devices. My expertise in PHP, Website Design, Graphic Design, Backend Development, and Flutter makes me well-equipped to handle this project. I plan to create a clean and intuitive interface for managing appointments, tasks, and notes, with a robust backend for data persistence and synchronization. I will ensure the code is well-documented for future maintenance and provide a user guide or video walkthrough upon completion. I will communicate effectively throughout the project to meet your expectations. You can view examples of my previous work in my portfolio https://www.freelancer.com/u/Curveballsol Best regards, Curveball Solutions
€27 EUR in 40 days
6.2
6.2

Fiuggi, Italy
Member since Sep 7, 2026
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