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I'm looking for an experienced developer to create a productivity tool app for both iOS and Android. Essential features include: - Task management - Calendar integration - Note-taking - Artificial Intelligence - Multi-API integration The ideal candidate should have: - Proven experience in mobile app development for both iOS and Android. - Strong background in building productivity tools. - Expertise in AI and API integrations. - Familiarity with task management and calendar functionalities. Please provide examples of similar work done and any relevant qualifications. Looking forward to your proposals!
Project ID: 39691588
174 proposals
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Active 8 mos ago
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174 freelancers are bidding on average $7,204 USD for this job

Hello, I understand that you're seeking a developer for a cross-platform productivity app that includes essential features like task management, calendar integration, note-taking, AI, and multi-API integration. I have significant experience in mobile app development for both iOS and Android, and I have previously built similar productivity tools. My expertise includes not just app development but also the integration of AI and various APIs, ensuring a seamless user experience. I can provide examples of my previous work in this area, demonstrating my qualifications and the quality I deliver. I am excited about the opportunity to work on this project and help you create a tool that enhances productivity for users. Could you elaborate on the specific AI features you envision for this app? Thanks, Muhammad Awais
$10,000 USD in 10 days
8.9
8.9

Hello , Nice to meet you! I will design and develop PRODUCTIVITY mobile application with web admin panel according to your requirement , ping me on chat so we can discuss this more. I am expert and 9 years experienced Android /iPhone app developer with backend work that you are looking for. I will provide you perfect product as you want so you would be happy with it. I am always ready to discuss about your project in detail as well as start from right now. The following are my services that i provide :- 1. Daily or Weekly update. 2. Clean and Robust code. 3. Responsible for communication for more than 15 to 20 hours each day. 4. Free Bug-Fix support for 1 year after completion. 5. Source code delivery. You can have a look at my profile by this link : https://www.freelancer.com/u/shyamvijaywargiy Let's contact me to discuss further details with me. Thanks Shyam
$5,000 USD in 40 days
9.0
9.0

A Warm Hello! We are readily available to start working on this project! We are confident to provide you Productivity Tool App for both iOS and Android platforms. Our agency specializes in building high-performance, user-friendly mobile applications with seamless integrations and AI-driven capabilities. Key features: - Task Management – Create, organize, and prioritize tasks with intuitive UI/UX. - Calendar Integration – Sync with Google Calendar, Outlook, and iCal for unified scheduling. - Note-Taking – Quick, searchable, and categorized note storage. - Artificial Intelligence – Smart suggestions, automated reminders, and intelligent task organization. - Multi-API Integration – Integration with popular tools (Slack, Trello, Zoom, etc.) to centralize workflows. We are confident that our experience and technical capabilities make us an ideal partner for bringing your productivity tool app to life. We look forward to discussing your vision in detail. Best Regards Ana
$10,000 USD in 70 days
8.9
8.9

I have over 10 years of experience in web and mobile development, specializing in building scalable solutions across various platforms. I understand the need for a productivity tool app that seamlessly integrates task management, calendar functionalities, note-taking, AI, and multi-API capabilities for both iOS and Android. In the past, I have successfully delivered projects in the productivity tools category, including AI-driven features for enhanced user experiences. My expertise in mobile app development, AI integrations, and task management align perfectly with the requirements of your project. I have a proven track record of creating intuitive and effective solutions that drive productivity and efficiency. I am excited about the opportunity to work on your cross-platform productivity app and bring my skills to the table. Let's discuss how we can make this project a success. Looking forward to hearing from you.
$8,000 USD in 60 days
8.1
8.1

Hi, we have read all the requirements and we are very confident to do this project from start till end. We definitely have some questions when we discuss project with you. We shall finish this project in timely manner and will finish it in time. We offer IT, Web design, web development and Smart phone application development. We also give life time guarantee to our work. Thanks
$8,999 USD in 30 days
8.2
8.2

As a seasoned mobile app developer, with over 11 years' worth of experience, I am readily equipped to bring your vision for a cross-platform productivity app to life. My extensive and proven proficiency in not only iOS and Android development but also specifically in building productivity tools makes me confident in delivering an end-result that will exceed your expectations. I pride myself on writing clean, maintainable code and appreciate the paramount importance user experience plays in application development. From your description, it is clear you require an app that is high on functionality and seamless task management. These are areas where my skillset shines as I've already developed numerous applications for both iOS and Android users that operate with flexible yet effective interfaces. My familiarity with API integrations will prove invaluable as we incorporate artificial intelligence into the app to further enhance its productivity features. Make no mistake, I am not just a coder - I am an architect who understands the multitude of intricacies involved in developing an app and can ensure it runs harmoniously with minimal maintenance. Let's get started - I'm here to make your ideas come to life!
$7,500 USD in 7 days
7.7
7.7

I am Sushil Kumar Singh, an experienced mobile app developer avec a knack for building high-quality and robust cross-platform applications. My expertise lies in both iOS and Android app development, which is precisely what you require for your productivity tool project. Having created various successful applications, including specific features like note-taking integrated with calendars, I am confident in my ability to deliver exactly what you need. What sets me apart is my proficiency not just in coding but also in AI technology and API integration. These skills are particularly valuable in developing productivity apps as they can help in creating smart task management systems and enhanced user experiences through intelligent responses. To top it all off, I have a thorough understanding of the importance of task management and calendar functionalities – critical aspects of your project that I have mastered over years. Range: From apps Chattzaar, dealDunt, Fiuturesmart to a variety of websites for different domains, I bring to the table an extensive portfolio showcasing my diversity in software development which I believe makes me uniquely qualified to handle your project on any scale or complexity level. Whether it's brainstorming features or delivering bug-free final products,delivering an impeccable end product that meets and exceed your vision is my priority
$10,000 USD in 70 days
7.9
7.9

Hi there, I went through your project description and it seems like I am a great fit for this job. With over 10 years of experience in mobile development across both iOS and Android platforms, and a specialized focus on Flutter in recent 3 years, I am confident that I’m one of the best here. My expertise enables me to build high-quality apps efficiently, ensuring seamless performance across platforms. Feel free to visit my Freelancer profile to review my skill exams and certifications https://www.freelancer.com/u/mikelilei82 Flutter & Dart: Scored 80% on Level 3 exam iOS & Objective-C: Scored 80% on Level 3 exam iPhone Development: Scored 82% on Level 1 exam (only level 1 testing available) Android & Android Development: Scored 92% on Level 3 exam Web & JavaScript: Scored 87% on Level 3 exam Note: The Level 3 exams represent the highest level skill testing on the Freelancer platform I am ready to start now and will deliver both the app and the full source code upon completion. Let’s discuss the details of your project and get started right away. Regards Lei
$5,000 USD in 30 days
7.1
7.1

Hi, This is Elias from Miami. I specialize in building cross-platform productivity apps for iOS and Android that combine robust task management, seamless calendar integration, AI-powered features, and smooth multi-API connectivity. Your project’s scope — task management, notes, AI, and multi-API integrations — aligns directly with apps I’ve built for corporate productivity and personal organization markets. Relevant experience: 8+ years in mobile development (React Native, Flutter, Swift/Kotlin). Delivered AI-enhanced note and scheduling apps with Google Calendar, Outlook, and Notion APIs. Expertise in GPT-based assistants for task prioritization and natural language note parsing. Questions to clarify scope: 1. For AI, should the assistant proactively suggest tasks/events or respond only to user prompts? 2. Will calendar integration be bi-directional (sync back changes) or read-only? 3. Are you targeting offline functionality for notes/tasks or fully cloud-dependent? I can deliver a sleek, responsive, and secure productivity tool that users will love — from architecture to final deployment. Regards, Elias
$7,500 USD in 40 days
6.9
6.9

Hello, I understand you need a cross-platform productivity app for iOS and Android that will include essential features like task management, calendar integration, note-taking, AI functionalities, and multi-API integration. With my experience in mobile app development and creating productivity tools, I am confident I can build an app that meets your requirements effectively. I have worked on similar projects before, focusing on both iOS and Android platforms, ensuring smooth user experiences. My expertise in AI and API integrations will enable me to implement the necessary functionality seamlessly while maintaining user-friendliness. I would love to discuss your project further and answer any questions you may have. What specific AI functionalities are you looking to integrate into the app? Thanks, Shamshad
$10,000 USD in 29 days
6.7
6.7

Good day !! Imagine having a productivity tool that seamlessly integrates tasks, notes, and calendars—all while leveraging AI to enhance user experience. I can help turn that vision into reality! With my background in mobile app development for both iOS and Android, I’ve successfully created user-friendly productivity apps that simplify users’ daily activities. To tackle the technical challenges, I propose starting with a scalable architecture that allows for easy updates and integration with multiple APIs. I also prioritize user experience, ensuring the UI/UX is intuitive and engaging. The amount I’ve put in is just a placeholder—we can talk about the budget via chat Best Regards, Muhammad Abrar
$7,500 USD in 20 days
6.5
6.5

Hello, I will develop your PRODUCTIVITY APPLICATION for android and ios both platforms with Web admin panel. I am Tulsiram. I have 10 years of experience working as Native and Crossplatform mobile application developer. I am understood your requirements. I am glad if we are working together. If you interested then let's connect. I will provide you Daily updates ,source code after development completed, 1 Year maintenance Support in following Steps: I will available daily 10-12 hours in Working days for you. I will provide you regular updates according to which modules we will decided. After approval each module by you then i will provide your complete source code of your project and will shift on your Domain. Thanks
$5,000 USD in 40 days
6.5
6.5

Hello, my name is Muhammad Aamir and I have the experience, drive, and skills to create the ideal productivity tool app that you're seeking. With a strong background in mobile app development for both iOS and Android, I understand the nuances and complexities required to deliver a seamless user experience across different platforms. In terms of essential features for your app, I can assure you that you'll receive nothing short of excellence. My expertise in AI and API integration has always been an asset in designing smart, interconnected functionalities. Additionally, task management, calendar integration, and note-taking are not only familiar territories for me but also ones where my ingenuity shines. Lets chat and we can discuss in detail. Regards
$7,500 USD in 30 days
6.6
6.6

Hello, Sir, Are you ready to elevate productivity to the next level with a cutting-edge app that meets all your needs? With my proven track record in mobile development and expertise in AI and API integrations, I will deliver a robust cross-platform productivity tool that seamlessly combines task management, calendar, and note-taking functionalities, ensuring timely completion by leveraging agile methodologies. Let's connect to discuss your vision and how I can bring it to life! Best, Smith
$7,500 USD in 7 days
6.2
6.2

Hello there Hope you are doing well as you are looking for a "Build a PRODUCTIVITY MOBILE APPLICATION " so will make the same as you want , I have already develop and Design the so many Application , Key Features : - Task management - Calendar integration - Note-taking - Artificial Intelligence - Multi-API integration - I will use latest technology to develop your Application - I will share daily update with you - I Will deliver your project within timeline - After project completion will share complete source code - I will provide 1 year support our develop work - I have 10+ year experience in Web & App development - I will make the 100% responsive design , fast loading , SEO friendly and all - I will provide you super admin panel there you can manage the whole thing Please initiate the chat so will discuss together and all Thanks & Regards Dheeraj K.
$5,000 USD in 25 days
7.0
7.0

Hi Yes got it - I have an expertise in application design and development both iOS and Android... Please message me so we can discuss in detail and i can share recent apps i have designed and developed. Kind Regards TM
$5,000 USD in 50 days
6.2
6.2

This is exactly the kind of work I love doing. API and AI integration excites me, making your productivity app a perfect fit. I’ve built clean UIs with task management and calendar features, using AI and multiple APIs. With a track record in both iOS and Android app development, I’m confident I can deliver the solution you need. I've done numerous similar projects with success, and I always strive for excellence in every detail. I’m happy to offer insight even if you don’t go with me. Regards, Anne S.
$7,000 USD in 5 days
5.8
5.8

Hello "I’ve done this before, I can do it for you—within your budget, on your timeline, and with zero hassle. Let’s get started today!" I will ** create a productivity tool app for both iOS and Android.**** - Task management - Calendar integration - Note-taking - Artificial Intelligence - Multi-API integration Let’s DISCUSS YOUR PROJECT IN MORE DETAIL TO START WORKING ASAP Regards vipin.
$5,000 USD in 21 days
5.8
5.8

Hello, My name is Sheriff Oladejo, a seasoned software developer specializing in crafting exceptional digital solutions across multiple platforms. With over five years of dedicated experience, I have honed my skills in mobile app development, particularly in creating powerful productivity tools for iOS and Android. I am eager to bring my expertise to develop a productivity tool app that not only meets but exceeds your requirements. My previous projects include developing applications equipped with robust features such as task management, calendar integration, and note-taking functionalities. Additionally, I possess a solid understanding and practical experience in integrating Artificial Intelligence technologies and managing multi-API integrations, which align perfectly with the essential features of your project. This robust skill set not only enables me to effectively tackle the challenges posed by diverse software environments but also ensures a seamless, user-friendly experience. My commitment to innovation and quality, along with an acute attention to detail, compels me to create apps that are both functional and visually appealing. I am confident in my ability to deliver a sophisticated, high-performance productivity tool that will cater to the dynamic needs of your target users and contribute to enhanced productivity and user engagement. Thank you for considering my proposal. I look forward to the possibility of contributing to this exciting project. Warm regards, Sheriff Oladejo
$6,666.67 USD in 7 days
5.7
5.7

We've just completed a similar project. We'll help you create a multi-platform productivity app with task management, note-taking, calendar integration, AI, and multiple API connections. You won’t find a team better aligned with what you’re looking for. Empowering productivity with our mobile app development expertise for iOS and Android, specializing in productivity tools, AI, and seamless API integrations. With 75+ 5-star reviews, we're in the top 1% among 75 million users! I’d love to chat about your project! The worst that can happen is you walk away with a free consultation. Regards, Chris.
$7,000 USD in 5 days
5.5
5.5

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