
Closed
Posted
Paid on delivery
I am building a cross-platform mobile app that ranks professional, personal, and educational tasks in real time and then pushes the right items directly into Google Calendar. The core engine will lean on AI-driven task prioritization powered by Gemini while the overall product operates as a true SaaS: shared backend, multitenant database, and a web dashboard that stays fully in sync with the iOS and Android clients. Scope of work The project spans the full stack. I need the mobile front-end for both iOS and Android, a resilient backend (Node, Python, or a language you can justify), and the connective tissue—APIs and webhooks—to keep everything synchronized. Tasks must be created in natural language inside the app, scored by the AI model, scheduled automatically on the user’s Google Calendar, and stored so that any change on one surface is reflected everywhere else almost instantly. Key requirements • Platforms: native or Flutter/React Native builds that ship simultaneously to iOS and Android • AI layer: Gemini calling your task-ranking logic and returning ordered tasks with confidence scores • Calendar integration: secure OAuth flow with Google, two-way sync, conflict handling • Auth: classic email-and-password signup/login with best-practice security (bcrypt, email verification, forgot-password flow) • SaaS foundation: tenant isolation, usage metering endpoints, and easy tier upgrades • DevOps: containerised deployment and CI/CD that can be handed over without guesswork Acceptance criteria 1. A user creates three tasks; the AI returns a prioritized list within 2 seconds. 2. Selecting “schedule” inserts tasks into the correct Google Calendar slots and reflects the event IDs back in the app. 3. Updating a task on one device (or via Calendar) propagates to all signed-in devices in under 5 seconds. 4. Sign-up, sign-in, and password reset workflows are fully functional and tested. 5. Code and infrastructure are documented well enough that another developer can spin up the project locally in <30 minutes. If this end-to-end build—from mobile UI to SaaS backend and AI integration—matches your expertise, let’s talk timelines and milestones.
Project ID: 40666490
193 proposals
Remote project
Active 5 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
193 freelancers are bidding on average $754 USD for this job

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in Android, AngularJS, API Development, Flutter, Mobile App Development, React Native, iPhone 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
$500 USD in 10 days
9.4
9.4

Hi, This project is as much about synchronization as AI. The main challenges are task ranking, Google Calendar conflict handling, and keeping mobile, web, and backend state aligned in near real time. I’d pay close attention to tenant isolation and event-ID mapping to prevent drift or duplicate data in a SaaS environment. My first priority would be the core flow: natural-language task creation, Gemini-based prioritization, and secure calendar scheduling with reliable webhook handling. From there, I’d strengthen auth, multi-tenant data structure, and the sync layer so updates from the app or Google Calendar propagate correctly across devices. Relevant experience includes: - Task create → rank → schedule flows - Google OAuth and calendar sync - Email signup, login, and password reset - Tenant-aware backend architecture - CI/CD setup and local documentation Timeline: I can start with the core architecture and sync layer immediately, then move into authentication and end-to-end integration in the next phase. One question: should Google Calendar be the source of truth for edits made outside the app, or should the app backend handle conflict resolution first?
$287 USD in 12 days
9.5
9.5

Hello, AI Task Priorization App Specialist {{{ I HAVE CREATED SIMILAR BEFORE AND I CAN SHOW YOU }}} I have carefully reviewed your requirements for a cross-platform AI task prioritization SaaS with iOS/Android apps, Gemini integration, Google Calendar synchronization, real-time updates, authentication, and a multitenant backend. I have 11+ years of development experience and can build the complete solution using Flutter for iOS/Android, Node.js or Python for the backend, PostgreSQL for the multitenant database, and Gemini for intelligent task prioritization. I can implement natural-language task creation, AI ranking with confidence scores, automatic scheduling, Google OAuth, two-way Calendar synchronization, conflict handling, event ID tracking, and near real-time synchronization across mobile and web platforms. The SaaS architecture will include secure tenant isolation, user authentication with bcrypt, email verification, password recovery, usage metering, subscription-ready tiers, API/webhook integration, and scalable infrastructure. I can also containerize the application with Docker and configure CI/CD so the complete environment can be deployed and maintained easily. I will focus on meeting your acceptance criteria, including fast AI prioritization, reliable Calendar scheduling, synchronization within seconds, secure authentication, and clear technical documentation for future developers. Thanks, Christina
$450 USD in 10 days
8.5
8.5

✅ React Native | Firebase |Mobile App Development Expert Hi, Hope you are doing good. I have read your requirements carefully and can give you 100% assistance as a React Native Developer for building or enhancing your mobile application. I specialize in creating fast, stable, and scalable apps for both iOS & Android, backed by a secure and efficient Firebase architecture. I’d love the opportunity to discuss your idea further and collaborate on developing a modern, intuitive, and impactful app. (Note: Please consider the current budget as flexible — we can finalize it after discussing the complete scope.) Thanks & Regards, Ashraf
$750 USD in 7 days
7.0
7.0

Understanding the goal of creating a cross-platform mobile app for real-time task prioritization, our team is ready to deliver a seamless solution that integrates AI-driven insights with Google Calendar. We focus on ensuring the user experience is smooth and intuitive. We will leverage Flutter for simultaneous iOS and Android builds, ensuring a consistent interface across platforms. Our approach includes a robust backend using Node.js, with secure OAuth integration for Google Calendar, enabling efficient two-way sync and conflict handling. Our skills in AI integration, containerized deployment, and CI/CD practices will ensure a resilient and maintainable system. Also, communication, quality, and on-time delivery are priorities. If you'd like, I can also share similar work we've completed and discuss the best approach for your project. You pay for quality. We deliver it. Regards, JP
$400 USD in 7 days
6.8
6.8

AI-Powered Task Management SaaS I can build the complete cross-platform SaaS, from the iOS/Android app to the AI prioritization engine, Google Calendar sync, backend, and web dashboard. Here's my approach: → Build iOS and Android apps using Flutter or React Native. → Integrate Gemini for AI task ranking and confidence scores. → Implement secure Google OAuth and two-way Calendar sync with conflict handling. → Build a multitenant SaaS backend with authentication, usage metering, and tier management. → Set up Docker, CI/CD, documentation, and a scalable deployment environment. Stack Flutter → Node.js/Python → PostgreSQL → Gemini API → Google Calendar API → Docker/AWS Flow Architecture → UI → AI Engine → Calendar Sync → SaaS Backend → Testing → Deployment Question Do you already have the UI/UX and SaaS tier structure defined, or should I help plan the MVP and milestones? Let's connect... Thanks
$260 USD in 16 days
7.4
7.4

Hello, ✅ You’re not just building a task app — you need a real-time SaaS engine where Gemini prioritization, Google Calendar sync, and cross-device updates stay reliable across iOS, Android, and web. We’re an 8+ year team focused on PHP/Laravel, Node, and backend-heavy product builds. We've shipped 100+ Laravel/Symfony/Node backends — APIs, payment integrations, CRMs, SaaS. Top Rated on Freelancer, long-term partnerships with multiple SaaS clients. For your app, I’d lean toward a multitenant Node or Laravel backend with event-driven sync, webhook processing, OAuth-secured Google Calendar integration, and a clear API contract for mobile + dashboard. We’d structure it around fast task scoring, tenant isolation, usage metering, and sub-5-second propagation with queueing/websockets where needed. Two backend questions: 1. For multitenancy, are you expecting shared-schema with tenant_id isolation or separate schemas/databases per tenant for future enterprise tiers? 2. For the <2s prioritization target, do you want Gemini called synchronously on task creation, or should we cache/rank locally first and then reconcile confidence scores asynchronously? Happy to dive into the API spec, sync model, and deployment handover approach — message me. **Please let me know your thoughts. Looking forward, Roman**
$412 USD in 7 days
6.5
6.5

Hi 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. I am having expertise in Native on Android Java, kotlin and IOS Swift, and For Hybrid Cross platform on Flutter Dart & React- Native, and for web and backend on react js and node js, Python Django. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
$400 USD in 14 days
6.6
6.6

Hello!! Your application will combine Gemini-powered task prioritization, Google Calendar two-way synchronization, cross-platform mobile apps, and a secure multitenant SaaS backend that stays synchronized across every device. * Do you already have the preferred visual design or should it be created? * Do you have a Gemini account and Google Cloud project ready? * Which subscription tiers should the first release support? The solution will include Flutter or React Native, secure authentication, tenant isolation, AI ranking with confidence scores, Google OAuth, conflict handling, real-time synchronization, usage tracking, web dashboard, containerized deployment, and documented CI/CD. Relevant AI, SaaS, calendar, and cross-platform applications have been developed with reliable synchronization and scalable backend architecture. The focus will be a fast, maintainable product ready for future growth. Let us connect in chat to discuss milestones and begin. Best regards Farhin B
$250 USD in 10 days
6.8
6.8

Hello, I hope this message finds you well. I have a clear understanding of the AI Task Prioritization App project and am excited about the opportunity to work on it. The main objective is to develop a cross-platform mobile app that utilizes AI for real-time task prioritization and seamless integration with Google Calendar. My approach involves structured requirement confirmation, controlled planning, clean implementation, rigorous testing, and transparent milestone tracking. With a strong background in Mobile App Development, Android, API Development, and Flutter, I believe I am well-equipped to deliver reliable execution and long-term results. You can view my portfolio here: ⭐⭐ https://www.freelancer.com/u/CodeAnchors ⭐⭐ Could you please share more details about your top priority or key business goal for this project? Let's discuss further in an open chat to finalize the scope smoothly. Best regards, Muhammad Anas Khan
$250 USD in 4 days
5.8
5.8

Hi, this is really a synchronization and decisioning system disguised as a task app, and that’s the part I’ve built repeatedly in production. The real engineering risk is not the Gemini call itself; it’s keeping ranking, calendar state, and cross-device updates consistent under low-latency constraints without creating conflict loops. I usually structure systems like this with a Python backend as the control plane, clear separation between task ingestion, ranking, scheduling, and sync reconciliation, and an event-driven path for device and Calendar updates. That keeps the mobile clients thin and makes the web dashboard and apps behave consistently. The closest prior work is Dent-Cloud for multitenant SaaS architecture, auth, APIs, and production data flows, plus AI Translator Plugin for low-latency orchestration and reliability under real-time constraints. For this app, I’d recommend separating AI prioritization from scheduling policy so confidence scores inform decisions without becoming the only decision-maker. I also typically add idempotent webhook handling, conflict-resolution rules, and fallback logic when the model output is ambiguous. These are systems I design for long-term production use, not just demo behavior. If useful, I can sketch the sync architecture and conflict model for the app-to-calendar loop first. Clifton
$500 USD in 7 days
5.6
5.6

Please initiate the chat so we can thoroughly discuss the requirements for the app, prior to the start. Happy to provide the final budget in chat. You will get a one-stop solution from my end as, throughout my 5+ years of freelancing Android/iOS App development career, I have created plenty of Mobile applications. I ensure to give the best quality app with good performance and responsive attractive UI and I have provided the clients with excellent results. I have expertise in Swift, React Native, Node.js, React.js, Angular, Laravel, and PHP. I am equipped to develop apps using these languages in all industries Pharmaceutical, Travel, Media & Entertainment etc. I also handle backend integrations for third-party collaborations on your systems. well versed in Mobile App Development in-App-Purchases, User Authentication, User Profile Creation, Location, Chat and Messaging, Map Integration, Payments, Social Media Account Integration, and many more to show. Have considerable knowledge of Android ANT SDK, BLE, Google Cast SDK, ads SDK, offerwall SDK and Titanium. I use libraries such as Sherlock Action Bar, OpenGL, Media Framework, and WebKit to build IoT integration app solutions. I am always interested in making long term professional relationships with my clients to ensure that every project becomes successful. So, if you hire me, I can assure you that you will not regret your decision. Best Regards Tejash J.
$500 USD in 7 days
5.8
5.8

Hello, I have hands-on experience with projects having similar AI-POWERED TASK MANAGEMENT & SAAS REQUIREMENTS. I can build the complete cross-platform solution with mobile apps, scalable SaaS backend, AI prioritization, Google Calendar synchronization, and a real-time web dashboard. → Flutter/React Native apps for iOS & Android → Natural-language task creation with Gemini-powered prioritization → AI ranking with confidence scores and fast response times → Secure Google OAuth with two-way Calendar synchronization → Real-time task updates across mobile, web & Calendar → Secure authentication with email verification and password recovery → Multitenant SaaS architecture with tenant isolation & usage metering → REST APIs, webhooks, background jobs and conflict handling → Docker-based deployment with CI/CD and complete documentation I can structure the backend using Node.js or Python with PostgreSQL and Redis/WebSockets to support reliable synchronization and future SaaS scaling. The complete system will be tested against your acceptance criteria, including AI response time, Calendar event mapping, cross-device synchronization and local development setup. I’ll provide full source code, regular updates, deployment documentation, CI/CD setup and post-launch support. Let’s connect in chat as I have a few technical questions regarding Gemini scoring, Calendar conflict resolution and the multitenant architecture before proceeding further. Thanks, Invoke Tech
$250 USD in 7 days
5.6
5.6

The Gemini API integration for task scoring is where this falls apart if not handled right, so I would start by building out the core backend service for that interaction first, using Python with Flask for speed and its extensive libraries for API handling so it’s ready for the mobile clients and web dashboard. I’d then develop the React Native mobile app, feeding tasks in via natural language and displaying the AI-prioritized list, and also build the Node.js backend for user management and the multitenant database, likely PostgreSQL, so it’s all in sync. For what it’s worth, every job I have taken on Freelancer has gone out on time and on budget, 100% on both. I would connect the Python AI service to the Node.js backend with well-defined APIs. One question I have is about the specific scoring mechanism you envision for the Gemini AI; will it be based on user-defined weights or more general predictive analysis? Let’s schedule a short call on Freelancer to clarify the exact Gemini API parameters and the data structure for task objects.
$598 USD in 21 days
5.2
5.2

The difficult part here isn’t generating a priority score with Gemini. It’s keeping task state consistent across two mobile clients, the web dashboard, and Google Calendar while handling changes and conflicts in near real time. My approach would be to structure the backend as the source of truth for tenants, users, tasks, AI scores, and calendar event mappings. The mobile app could use React Native or Flutter, with secure authentication and APIs/webhooks handling synchronization. Gemini would return a structured priority result with confidence, while scheduling would translate that into calendar events and store the corresponding Google event IDs. For Calendar sync, I’d design explicit conflict handling rather than blindly overwriting changes. Updates from Google Calendar and the app need to be reconciled so edits don’t create duplicate events or stale task states. I’d also keep tenant isolation and usage tracking in the backend from the beginning, with containerized deployment and CI/CD so the SaaS can grow without restructuring the core. A few questions: Q1: Should Gemini prioritize tasks using only task content, or also deadlines, estimated duration, category, and user preferences? Q2: When Google Calendar has a conflict, should the system reschedule automatically or ask the user? Q3: Do you already have the UI designs, or should the mobile and dashboard interfaces be developed from the requirements? Juan Pablo
$500 USD in 7 days
5.2
5.2

Warm Hello! I can build your cross-platform AI task-prioritization SaaS with synchronized iOS/Android apps, web dashboard, Gemini integration, and reliable Google Calendar two-way sync. I have over 9 years of experience in this field and can handle the full stack from mobile UX and APIs to multitenant architecture, DevOps, and CI/CD. Here's how I can help: Build Flutter/React Native apps with real-time task synchronization Integrate Gemini for prioritized tasks and confidence scoring Implement secure Google OAuth, Calendar sync, event mapping, and conflict handling Develop secure auth, tenant isolation, usage metering, and tier-ready SaaS APIs Containerize the backend and document CI/CD, setup, and handover Do you have a preferred Flutter vs React Native stack? Which Gemini model and cloud provider are you planning to use?
$500 USD in 7 days
5.2
5.2

Hello Dear, I’m Md Toriqul Islam, an experienced full-stack and mobile developer specializing in AI-powered SaaS, Flutter/React Native, Node.js, APIs, and cloud-based systems. I understand you need a cross-platform task management SaaS with Gemini-powered prioritization, real-time synchronization, secure authentication, multitenancy, and two-way Google Calendar integration. I have rich experience in React Native, Flutter, Node.js, Python, PostgreSQL, Firebase, Gemini/OpenAI APIs, OAuth, webhooks, Docker, and CI/CD. I can build the mobile apps, synchronized backend, AI ranking engine, web dashboard, and secure Google Calendar workflow with scalable tenant isolation. I’m ready to start immediately and would be happy to discuss milestones and architecture. Looking forward to hearing from you. Best regards, Md Toriqul Islam
$250 USD in 3 days
5.4
5.4

Hello, I’ve already completed similar AI SaaS and cross platform mobile projects involving APIs, real time synchronization, authentication, and third party integrations. I have strong experience in web development, scalable software solutions, and AI integrations, so I can quickly understand the requirements and deliver the full flow from mobile apps to backend and dashboard. I can handle Gemini task prioritization, Google Calendar two way sync, secure authentication, tenant separation, usage tracking, and real time updates across devices with a clean handover. For the Google Calendar sync, should conflicts be resolved automatically based on task priority, or should the user be asked to choose? I’d be happy to discuss the architecture and milestones in a quick meeting. I will share my portfolio in chat I look forward to hear from you. Thanks Best Regards, Mughira
$500 USD in 7 days
5.2
5.2

As a mobile and web developer with a deep understanding of APIs and backend systems, I am confident in my ability to realize your vision for this AI Task Prioritization App. My experience includes working on projects that require strong sync functionality, data integrity, and real-time updating, all elements that your app hinges on. Moreover, my exposure to Flutter/React Native makes me an ideal fit for developing your app simultaneously across iOS and Android platforms. I am especially excited about incorporating the AI layer into the task-ranking system using Gemini - a platform I'm well-versed in. I fully appreciate the time sensitivity of task-ranking, scheduling sync with Google Calendar and user authentication, so I will give priority to stability, speed, and best-practice security practices. Additionally, having worked on SaaS foundations and DevOps in prior projects makes me comfortable with full-end project management and containerized deployment. Lastly, what sets me apart is my commitment to delivering not just functional but practical solutions. My ability to provide long-term support and effectively document codes means your project can easily be handed over or worked upon by another developer if needed. With my problem-solving skills, business mindset, and dedication towards streamlined operations in any project I undertake, I believe I'll be an asset to
$250 USD in 3 days
5.2
5.2

hello there , I can build your complete AI-powered task management SaaS across mobile, web, backend, AI, and Google Calendar. Key Features: Flutter/React Native iOS & Android app Web dashboard with real-time sync Natural-language task creation Gemini AI task prioritization & confidence scoring Automatic Google Calendar scheduling Two-way Calendar sync & conflict handling Secure login, email verification & password reset Multitenant SaaS architecture Usage metering & subscription/tier support REST APIs & webhooks Real-time updates across all devices Docker-based deployment & CI/CD Complete testing and technical documentation I will focus on fast AI responses, reliable synchronization, secure architecture, and scalable code so the platform is ready for future growth. I would be happy to discuss the architecture, milestones, and timeline. thanks
$250 USD in 7 days
5.2
5.2

São Paulo, Brazil
Member since Jul 28, 2026
$250-750 USD
$250-750 USD
$15-25 USD / hour
₹12500-37500 INR
₹12500-37500 INR
₹50000-100000 INR
₹1500-12500 INR
₹600-7000 INR
₹750-1250 INR / hour
₹75000-150000 INR
₹600-1500 INR
₹12500-37500 INR
₹12500-37500 INR
₹37500-75000 INR
₹75000-150000 INR
₹1500-12500 INR
₹12500-37500 INR
₹12500-37500 INR
₹1500-12500 INR
₹600-1500 INR
₹12500-37500 INR
$250-750 USD