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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: 40666409
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209 freelancers are bidding on average $509 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

Hello, I HAVE CAREFULLY REVIEWED YOUR REQUIREMENTS AND UNDERSTAND THE COMPLETE AI TASK PRIORITIZATION AND SAAS WORKFLOW YOU ARE LOOKING FOR. I have 11+ years of experience in mobile, backend, AI, API integration, and SaaS development. I can build the iOS/Android application using Flutter or React Native, with a scalable Node.js/Python backend, multitenant database, Gemini integration, and real-time synchronization. I will implement natural-language task creation, AI prioritization with confidence scores, secure Google OAuth and two-way Calendar synchronization, conflict handling, email/password authentication, usage metering, tenant isolation, and a responsive web dashboard. I will also provide containerized deployment, CI/CD, automated testing, clean documentation, and an architecture designed for future SaaS tier expansion. WE WILL WORK WITH AGILE METHODOLOGY AND I WILL PROVIDE 2 YEARS FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE, ALONG WITH ASSISTANCE FROM DEVELOPMENT TO DEPLOYMENT. I am ready to discuss the architecture and start step-by-step. I eagerly await your positive response. Thanks
$450 USD in 10 days
8.5
8.5

Hello How are you? With over a decade of experience in web and mobile application development and a strong understanding of the technology stack your project demands, I am confident in my ability to deliver top-tier results for your AI Task Prioritization App. One of the key features of your project is the AI-driven task prioritization and the complete integration with Google Calendar. Additionally, my extensive experience with APIs and webhooks ensures optimal connectivity while resolving conflicts effectively in any changes made on one surface. Building on my proficiency in secure OAuth flow integration for Google services, I understand how crucial it is to have airtight authentication mechanisms to maintain user data confidentiality. Plus, with my DevOps skills attaining containerised deployment and CI/CD pipelines would not be something you have to worry about; as assuredly maintaining code quality has never been an issue throughout my career. Undeniably, my multifaceted skill set encompassing AI task prioritisation, Google Calendar integration, multitenant database management, SaaS architecture development puts me in the best position to make your project vision a practical reality. I look forward to discussing timelines and milestones!
$400 USD in 4 days
8.0
8.0

Hi, I’d be glad to build this end-to-end SaaS application. I have experience with Flutter/React Native, Node.js/Python, AI integrations, Google APIs, OAuth, real-time synchronization, and scalable SaaS architectures. I can handle the mobile apps, AI task prioritization with Gemini, two-way Google Calendar sync, secure authentication, multitenancy, usage metering, APIs/webhooks, and Docker-based CI/CD. A few questions: - Do you already have the UI/UX designs, or should I handle them? - Do you have a preferred stack between Flutter and React Native? - Is the Gemini/API and Google Cloud project already set up? I’d be happy to discuss milestones and timeline and get started.
$1,500 USD in 30 days
7.6
7.6

Hey there, The interesting part here isn’t just ranking tasks with Gemini, it’s keeping three states consistently in sync, the task in your SaaS, the scheduled Google Calendar event and the copies shown across devices. I would build the sync around stable task/event IDs and webhook driven updates, with conflict handling so calendar changes don’t silently overwrite newer app changes. For mobile, Flutter or React Native would allow most product logic to be shared across iOS and Android while keeping native Google OAuth/calendar integrations where needed. The backend would handle tenant isolation, AI prioritization, usage metering, authentication, and real time sync, with containers and CI/CD documented for a clean handover. I would also treat the 2s AI response and 5s cross device sync as measurable acceptance targets and optimize against them throughout development. Do you already have the Gemini task ranking logic defined, or should I develop that as part of the backend? Checkout my portfolio https://www.freelancer.com/u/Hammadhassan21 Best regards, Hammad Hassan
$300 USD in 10 days
7.3
7.3

Hi, I reviewed your AI Task Prioritization App: users create tasks in natural language, Gemini ranks them within 2 seconds, and the app schedules the right items into Google Calendar with real-time sync across iOS and Android. I’ll build a true SaaS foundation with multitenant backend and a shared web dashboard, then connect mobile UI through APIs and webhooks so task updates propagate across devices in under 5 seconds. I’ll implement secure Google OAuth for two-way Calendar sync, store event IDs, and add tenant isolation plus usage metering endpoints and tier upgrades. I focus on clean, resilient code with tested auth flows (bcrypt, email verification, forgot-password), and smooth CI/CD with containerized deployment. Let’s discuss here now.
$250 USD in 30 days
7.1
7.1

Understanding the need for a cross-platform AI Task Prioritization App, our team is well-equipped to build a seamless solution that integrates real-time task ranking with Google Calendar. We focus on delivering an intuitive user experience while ensuring robust backend functionality. For the mobile front-end, we will utilize Flutter to ensure simultaneous deployment on both iOS and Android. The AI layer will leverage Gemini for efficient task scoring, while we implement secure OAuth for seamless Google Calendar integration. Our expertise includes Node and Python for the backend, ensuring a resilient architecture with tenant isolation and CI/CD practices. 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 Task Prioritization SaaS I can build your cross-platform SaaS app with Gemini-powered task prioritization, Google Calendar two-way sync, real-time updates, and a web dashboard. Here's my approach: → Build iOS/Android app with Flutter or React Native → Integrate Gemini for natural-language task ranking and confidence scores → Implement secure Google OAuth and two-way Calendar synchronization → Develop multitenant backend, authentication, usage metering, and APIs → Set up Docker, CI/CD, testing, and documented deployment Stack Flutter → Node.js/Python → PostgreSQL → Redis → Gemini API → Google Calendar API → Docker/AWS Flow Mobile App → AI Prioritization → Calendar Sync → SaaS Backend → Real-Time Updates → CI/CD Question Do you already have the Gemini prompt/ranking logic defined, or should I design the prioritization engine as part of the MVP? Let's connect... Thanks
$290 USD in 16 days
7.4
7.4

Hello, I have 10 years of experience building AI-powered mobile applications, SaaS platforms, real-time synchronization systems, and cloud-based backends. I recommend React Native for the iOS and Android clients, with Node.js, PostgreSQL, REST APIs, and containerized cloud deployment for a scalable multitenant foundation. I will implement natural-language task creation, Gemini-based prioritization with confidence scores, secure Google OAuth, two-way Calendar synchronization, conflict handling, and near real-time updates across devices. The SaaS architecture will include tenant isolation, usage tracking, upgrade-ready subscription logic, secure authentication, email verification, password recovery, and structured webhook processing. I will also optimize the AI and synchronization flows to meet the required response times and provide automated tests, CI/CD configuration, and clear setup documentation. I would be glad to discuss your task-ranking rules, calendar conflict cases, and MVP milestones. Best regards
$250 USD in 7 days
7.1
7.1

✅ 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

Hi, We would love to build your AI-powered task prioritization SaaS app across mobile, web, and backend. Our robust, multi-tenant methodology ensures low-latency AI ranking and real-time calendar synchronization: Phase 1: SaaS Architecture & Auth Design a multi-tenant backend (Node.js/Python) with tenant-isolated database scoping, usage metering endpoints, and secure OAuth/JWT auth flows. Set up containerized environments (Docker, CI/CD) for instant local spinoffs and smooth handover. Phase 2: Mobile UI & Gemini AI Integration Build cross-platform Flutter/React Native apps for iOS, Android, and web. Implement natural language task creation, calling Gemini API to return scored, prioritized tasks within <2 seconds. Phase 3: 2-Way Google Calendar & Real-Time Sync Integrate Google Calendar OAuth for 2-way sync, automated slot scheduling, and conflict handling. Wire WebSockets/Firebase to propagate updates across all surfaces in under 5 seconds. Phase 4: QA, Testing & Handover Verify all 5 acceptance criteria, optimize API latency, and deliver documented source code and Docker setup. Timeline: 3 to 4 weeks. Looking forward to discussing your Gemini prompts and architecture details!
$500 USD in 15 days
7.1
7.1

Good Day ! Before starting any contract, we can provide a free initial workflow draft so you can review our approach and work quality. I understand you need a cross-platform SaaS app that uses Gemini to prioritize tasks, syncs them with Google Calendar, and keeps iOS, Android, and web fully synchronized. We've worked on similar projects and will demonstrate you during our chat . A few things I’d like to clarify: -/ Do you have specific Gemini prioritization rules, or should we define the ranking logic together? -/ Should users connect multiple Google Calendars? -/ How should calendar conflicts and overlapping events be handled? -/ What SaaS plans, usage limits, and upgrade flows are required? -/ Should users be able to manually override AI priorities? Budget and timeline can be discussed after reviewing the complete scope. Let's jump over an on-site chat or on-site freelancer call to walk through everything and then proceed from there. Best Regards, Taqi (HJ)
$250 USD in 7 days
6.6
6.6

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 7 days
6.6
6.6

Hello!! Your task prioritization SaaS will connect a cross-platform mobile app, Gemini AI ranking, secure Google Calendar two-way synchronization, and a scalable multitenant backend with fast real-time updates. * Do you already have the mobile designs or should they be created? * Should Flutter or React Native be preferred for the first release? * Do you already have a Google Cloud project for Calendar integration? The solution will include natural-language task creation, AI confidence scoring, secure authentication, tenant isolation, usage tracking, calendar conflict handling, real-time synchronization, containerized deployment, and clear documentation. Performance will be built around your two-second and five-second acceptance targets. Relevant AI, SaaS, mobile, API, Google Calendar, and real-time synchronization projects have been completed. The focus will be a reliable foundation that can scale smoothly as users and subscription tiers grow. Let us connect in chat to discuss the architecture and milestones. Best regards Farhin B
$250 USD in 7 days
6.8
6.8

Greetings, I understand the core objective of your project is to develop a sophisticated AI Task Prioritization App that seamlessly integrates with Google Calendar. Leveraging my expertise in Mobile App Development, Android, iOS, API Development, and SaaS, I am confident in delivering a robust solution that meets your requirements. My portfolio showcases successful projects in Mobile App Development, API Integration, and SaaS Development, demonstrating my ability to deliver high-quality, user-centric solutions. To ensure a successful execution, I follow a structured approach encompassing requirement confirmation, controlled planning, clean implementation, rigorous testing, and transparent milestone tracking. Considering the complexity of the project, I am well-equipped to handle the full stack development, including the mobile front-end, resilient backend, AI integration, and synchronization components. Could you please share more insights on your top priority or key business goal for this project? Let's discuss further in an open chat to finalize the scope seamlessly. Best regards, Muhammad Anas Khan
$250 USD in 4 days
5.8
5.8

Real-time task ranking only works if Calendar changes never create duplicate or stale schedules. Gemini should return structured priorities and confidence scores, while Google event IDs remain linked to each task across mobile, web, and backend. I’d build the iOS/Android client in React Native with a shared multitenant API, isolated tenant data, secure auth, and usage metering. The sync layer would use Google Calendar webhooks plus sync tokens, with idempotent updates, conflict rules, and webhook renewal so changes reach every device within five seconds. AI calls would be timed, validated, and given a safe fallback if Gemini exceeds the two-second target. My related cross-platform mobile work is available at churchsync.online. I’d deliver this in tested milestones with containers, CI/CD, and a local setup path documented for the 30-minute handover target. Should Calendar changes override app scheduling, or should the app remain the source of truth?
$500 USD in 5 days
5.7
5.7

Hi, this is really a synchronization and decisioning system more than a simple task app, and that distinction matters for how I’d architect it. The real engineering risk is not the Gemini call itself; it’s maintaining consistent task state across mobile clients, the web dashboard, and Google Calendar while still hitting the 2-second ranking target. I’ve built several production systems like this where the hard part is orchestration, conflict handling, and observability around AI-driven actions. The closest matches in my background are Dent-Cloud for multitenant SaaS architecture and metering, and DocIntel AI for Python-based AI workflows, background processing, and admin-facing operational tooling. I usually structure systems like this with clear separation between task ingestion, ranking/evaluation, scheduling, and sync propagation. That keeps calendar webhooks, user edits, and AI rescoring from stepping on each other and makes failure handling much cleaner. For the AI layer, I’d treat confidence scores as operational signals, not just UI output: thresholding, fallback scheduling behavior, and auditability around why a task was ranked a certain way all matter here. This should be designed as a long-term SaaS backend, not a demo flow. If useful, I can sketch the event model and sync architecture around Gemini ranking plus Google Calendar two-way updates. 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

Building an impactful and seamless mobile app is not just about the technical skills, but also understanding the dynamic nature of a user's tasks. With over 6 years in mobile app development using Flutter and React Native, I have built and shipped successful apps precisely integrated with AI. From my previously developed mobile apps such as real estate listings, crypto signals platform, two-sided marketplace, to aviation coordination apps, I've crafted tailored features that resonate with specific user needs. The fundamental AI layer for your task prioritization powered by Gemini fits directly into my specialization area. In addition, my experience working with Firebase ensures smooth OAuth flow and Google Calendar integration without compromising on security. My proficiency in Node and Python backed by containerized deployment skills make me efficient in handling the resilience of your backend. I can guarantee full compatibility from multi-tenant database functionality to creating natural language inputs for tasks- allowing a user update or change to be reflected almost instantly.
$500 USD in 7 days
6.3
6.3

As a full-stack developer and an expert in AI-driven solutions, I am confident I can deliver excellent results for your AI Task Prioritization App. With an extensive background in React Native, Flutter, Android (Kotlin), and iOS (Swift), I have the necessary skills to provide native or cross-platform builds simultaneously for iOS and Android platforms, exactly what you're looking for. Most importantly, my deep knowledge of AI frameworks like Gemini will enable me to effectively implement your task-ranking logic and deliver tasks with confidence scores. You won't have to worry about the Calendar integration for this app as my experience includes working with Google’s OAuth flow, two-way syncs, and conflict handling, ensuring a seamless experience for your users. In terms of authentication, I understand its importance hence I always build fully functional and secure authentication workflows with best-practice security implementations. When it comes to SaaS foundation and DevOps, my proficiency in AWS, Docker, Kubernetes makes me skilled at deploying containerized solutions while ensuring maximum uptime and security.
$250 USD in 7 days
5.4
5.4

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