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Looking for SmartDev I’m building a productivity-focused mobile application that must launch on both iOS and Android at the same time. The goal is a clean, intuitive tool that helps users organise tasks quickly and stay on top of daily priorities without distraction. What I need from you is the full development cycle: initial technical planning, UX/UI design that feels native on each platform, a robust shared codebase (Flutter, React Native or a comparable cross-platform framework works for me), and final submission to the App Store and Google Play. I’ll supply the core feature list and wireframe sketches as soon as we start; you’ll turn them into polished screens, connect the necessary backend services, run thorough device testing, and package the release builds. Please highlight any past cross-platform productivity apps you’ve shipped, the framework you prefer, and your estimated timeline for achieving a first testable build.
Project ID: 40605077
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141 freelancers are bidding on average $33 USD/hour for this job

Hello, Regarding your project, i would like to discuss the app features in detail to better understand your requirements. i am a mobile applications developer and i have more than 8 years of experience developing mobile applications with backend services. i have developed many Business Solutions from scratch to Stores ready applications. i have completed more than 550 projects. i have live sample apps for you. i am super confident i will provide you best quality software services on time and on budget. Let's chat to proceed.
$25 USD in 40 days
8.9
8.9

Hi — Elias here from Miami. I see you're building a productivity mobile application focused on user experience and functionality. This is a significant step toward enhancing productivity for your users. The real technical challenge often revolves around scalability and user permissions. As your app grows, maintaining a smooth user experience while managing different access levels can become complex. Ensuring reliable performance across various devices is crucial to retain user engagement. My approach would involve creating a robust architecture from the start, focusing on modular design for easy maintenance and future enhancements. I prioritize user-centric design, ensuring that the app is intuitive and responsive. My experience with mobile app development has taught me the importance of building for both current needs and future expansion. I've worked on similar projects that required careful consideration of user roles and backend integrations, ensuring that apps remain performant and secure. A few questions to better understand the scope: Q1 – What specific user roles and permissions do you envision for the app? Q2 – Are there any third-party integrations you plan to implement? Q3 – What are your scaling expectations as the user base grows? Happy to discuss the details and suggest the best technical approach. Looking forward to hearing from you.
$50 USD in 7 days
8.2
8.2

With over 14 years of experience in full-stack development and mobile app development, I strongly believe my team and I have the skills your project demands. We have built numerous cross-platform productivity applications that have been acclaimed for their robustness, scalability, and intuitive design. On top of that, we boast of extensive knowledge and experience in frameworks like Flutter and React Native, which aligns perfectly with your requirement of a shared codebase for launching on both iOS and Android simultaneously. What sets us apart is not just our technical expertise but also our client-oriented approach. Our number one goal is to deliver clean, scalable code with utmost precision while ensuring professional communication, on-time delivery and fostering long-term client relationships. Our work is grounded in solid technical planning that requires minimal iterations or changes which, in turn, saves time without jeopardizing quality. I must underscore that we are not just about delivering a tangible product but about providing reliable and high-performing solutions to enhance your business operations. This resonates perfectly with your need for a "clean, intuitive tool" to heighten productivity. I assure you that by choosing us, you are choosing 14+ years of proven industry success tailored precisely to meet your requirements. Let's bring your idea to life in the most efficient and effective manner possible!
$38 USD in 40 days
7.7
7.7

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in Mobile App Development, iPhone, Android, UX / User Experience and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
$30 USD in 5 days
7.3
7.3

Hi, this is a strong fit for my team because you need the full cycle handled properly, from planning and polished UI to cross-platform development and store submission. For productivity apps, I generally prefer Flutter since it gives a clean shared codebase and strong performance on both iOS and Android. I can help turn your wireframes into refined, native-feeling screens and get you to a solid first testable build efficiently. Share the core feature list and I can map the build phases clearly from day one.
$25 USD in 40 days
6.9
6.9

Interesting project, I will deliver your productivity task app in Flutter, with native feel on both iOS and Android, covering UX/UI design, backend integration, and store submissions. You will get a first testable build quickly after wireframe handoff. On a similar cross platform task app, daily update check ins caught UX friction early, saving a full redesign cycle. I will follow the same approach here. Questions: 1) Do your wireframe sketches cover push notification flows for priority reminders? 2) Do you have a backend preference (Firebase, Supabase) or is that open? Share your feature list and sketches and I will map out the technical plan this week. Ready to start whenever you are. Kamran
$34 USD in 40 days
7.5
7.5

Hi, I understand you want a productivity app that is simple but powerful, and it needs to perform well on both iOS and Android. I’ve worked on projects like Labop Freelancer Marketplace and a multi-vendor marketplace, which needed smooth cross-platform performance and clear UI. I can handle designing the screens to look native, setting up the backend, and making sure everything runs smoothly on different devices. I’ll make sure the shared code works well across platforms, whether with React Native or Flutter, whichever suits your project best. I will also take care of submitting the app to both stores, after testing it thoroughly on various devices. With clear communication, high quality work, and quick updates, I aim to help your project grow faster and save you time. Your goal is simple, but I would love to ask if you have a specific deadline for the first test build, and do you prefer a more custom or ready-made UI? Let’s chat more about your ideas and come up with an awesome plan to build something even bigger together. Regards, Nick.
$25 USD in 3 days
6.6
6.6

Hello, I will develop your MOBILE 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
$25 USD in 40 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
$25 USD in 40 days
6.6
6.6

As an experienced AI & Embedded Systems Engineer, my skills perfectly align with your project's needs. I have a proven track record of building complete intelligent products and end-to-end solutions integrating hardware, firmware, cloud and mobile applications; like the one you need for your productivity-focused mobile app. Having worked extensively on iOS and Android platforms developing IoT systems, custom PCBs and mobile apps, I am well-versed in leveraging cross-platform frameworks like Flutter or React Native to create clean, native-feeling designs that work seamlessly on both iOS and Android simultaneously. My deep understanding of sensors, real-time device control, and my knowledge on reliable BLE device integration with mobile apps will prove invaluable in connecting necessary backend services and running thorough device testing. Moreover, I am proficient in all stages of the development cycle from initial technical planning to final submission to app stores. With a solid expertise in AI-enabled applications and smart assistants, my contribution would help transform your core feature list and wireframe sketches into polished screens that guarantees user's productivity without distractions.
$50 USD in 40 days
6.4
6.4

Hello!, This is James from Hollywood... I read your project details carefully, and I can see the core goal is to build a productivity-focused mobile app that launches smoothly on both iOS and Android. That kind of app needs more than just code, it needs clean UX, fast performance, and a very practical build plan so the first release feels solid, not rushed. I’ve spent about 15 years working with mobile and full-stack systems, including React Native, Flutter, API integrations, and UX-focused product builds. I usually approach projects in clear phases: 1) confirm the core user flow and MVP, 2) map the screens and interactions, 3) build the app with stable backend/API connections, and 4) test the experience on both platforms before launch. A few relevant examples I’ve worked on include: - TaskFlow Mobile - DailySprint Planner - FocusBoard Pro - WorkNest App Could you please clarify the following questions to help me better understand the project? 1) What are the top 3 must-have features for the first launch? 2) Do you already have wireframes/designs, or should I help shape the UX too? 3) Will the app need login, sync, push notifications, or offline mode in the MVP? If you want someone who actually pays attention to the details and builds with the release in mind, I’d be glad to chat and help move this forward properly.
$50 USD in 7 days
6.0
6.0

Hi, I'd be excited to help build your productivity app from concept through App Store and Google Play release. My approach is to start with a solid technical architecture, refine the wireframes into a clean, intuitive UI, and develop a scalable cross-platform application that feels natural on both iOS and Android. I prefer Flutter because it delivers excellent performance, consistent UI, and a maintainable shared codebase while still allowing native integrations where needed. I'll handle the full development lifecycle, including architecture, UX/UI implementation, backend integration, authentication, testing across multiple devices, performance optimization, and preparation for both app store submissions. I also believe in building with future growth in mind, so the codebase will be modular, well-documented, and easy to extend as new productivity features are introduced. I'm available to start immediately and can deliver an initial testable build within the first few weeks so you can validate the user experience early.
$35 USD in 40 days
6.0
6.0

As an experienced mobile app developer with strong proficiency in both iOS and Android, I believe I am the right fit for your project. My team at Our Software is well-versed in cross-platform development using popular frameworks like Flutter, React Native, and more. We have successfully delivered several productivity-focused apps, ensuring clean and intuitive designs specific to each platform without losing out on shared functionalities. These skills align perfectly with your project needs and I am confident that we can provide you with a native feel for both iOS and Android versions of your app by effectively utilizing the chosen framework. In addition to design skills, we have a robust backend development team that can seamlessly integrate all necessary backend services. We will also conduct thorough device testing on various platforms to ensure a bug-free experience for your users. Our ultimate aim is to package high-quality release builds ready to be submitted to the App Store and Google Play. With regards to timeline, we prioritize timely delivery without compromising on quality. Once we review your core feature list and sketches, we will develop a realistic timeline that accommodates any potential challenges while ensuring timely delivery of the first testable build. Choose us for professionalism, expertise, and unmatched customer service that will make your project a success!
$30 USD in 40 days
6.2
6.2

As a seasoned full-stack engineering team that works during U.S. business hours, we guarantee consistent communication and real-time iteration via Slack. We understand your need for a clean, intuitive, and native-feeling mobile app that upholds productivity. Our extensive skill set in both Android and iPhone app development, coupled with our expertise in UX/UI design, gives us the edge to materialize your wireframe sketches into polished screens that truly resonate with your users. Having honed our skills in 10+ years of building software for 500+ companies, we deeply comprehend the importance of a robust shared codebase. Our preferred cross-platform frameworks-React Native and Flutter-enable us to deliver a high-quality end-product within an impressive timeline. While working on several cross-platform productivity apps before, we have remarkable familiarity with the demands of such projects and can deliver an output to address it. Furthermore, our QA-first approach ensures that device testing is an integral part of each sprint and not left as a last-minute operation. We assure you professionalism, reliability, promptness, and top-notch quality in every stage of project development from initial technical planning to final submission while handling necessary backend services effectively. Approaching your project like one of our own means we will give it our all to ensure your application delights your users and empowers them to stay organized in their everyday lives.
$40 USD in 30 days
5.9
5.9

Hi there, We understand you're looking to develop a productivity-focused mobile application that launches on both iOS and Android simultaneously, with a clean and intuitive design to help users organize tasks and prioritize daily activities. Our team at Webbook Studio has experience with cross-platform development, including a music voting mobile app built with React Native and a furniture store mobile shopping app using Flutter. We're proficient in both frameworks but prefer React Native for its flexibility and performance. We can deliver a polished UX/UI design, a robust shared codebase, and handle the final submission to the App Store and Google Play. One question: do you envision any specific backend services or integrations for the app, such as calendar or notification systems, that we should consider from the outset? Feel free to message us to discuss the details! — Webbook Studio
$25 USD in 40 days
6.1
6.1

Greetings, I understand the importance of launching a productivity-focused mobile application simultaneously on iOS and Android. My approach involves meticulous requirement confirmation, controlled planning, clean implementation, testing & validation checkpoints, and milestone-based transparency to ensure a successful project delivery. With a strong background in Mobile App Development, UX/UI design, and experience in developing cross-platform applications, I am confident in my ability to bring your vision to life effectively. My portfolio includes successful projects in the productivity app space, and I prefer utilizing Flutter for cross-platform development. Could you elaborate on your top priority for this application to better align our development strategy? Let's discuss further in an open chat to finalize the scope seamlessly. Best regards, Muhammad Anas Khan
$38 USD in 40 days
5.8
5.8

Launching on iOS and Android together is mostly about keeping one shared codebase without ending up with a UI that feels like a compromise on both platforms. I'd start from your wireframes, map the feature flow before writing code, then build reusable components while keeping the platform-specific interactions where they matter so the app still feels native. For a productivity app, I'd lean toward Flutter because it gives a consistent UI across devices while still allowing platform-specific behavior when needed. I'd connect the backend services as features are built rather than all at once, test continuously on both platforms to catch device-specific issues early, and handle the App Store and Google Play submission requirements as part of the release process instead of treating them as a final step. One question that would affect the architecture: do you already have a backend/API in place, or should that be built as part of this project?
$35 USD in 40 days
5.7
5.7

Hello, I can help with your productivity mobile app project and deliver a clean, intuitive tool that works smoothly on both iOS and Android. I will focus on building a robust shared codebase using React Native or Flutter, depending on your preference, and ensure the UX/UI feels native and user-friendly on each platform. I will handle the full development cycle from technical planning, design, backend integration, thorough device testing, to final app store submissions. This approach will help your app stay reliable and easy to maintain. Do you already have the wireframes and backend services ready to share for the initial planning? Best regards, Waqas & GoDesign Team
$30 USD in 3 days
6.4
6.4

Hello I am a senior Flutter mobile app developer having 4+ years of experience in services for "iOS & Android Application" and totally I have experience and expertise of 7+ years in Mobile applications in the various domains in addition to various databases with Creative Designs and best coding techniques from the very beginning until the end. Flutter Ability Set: • Personalized iOS/Android App • App prototyping prototypes • Developing the Flutter App • Including new functions • Widgets for Flutter • UI Flutter • Fixing Flutter UI • Fixing bugs in the Flutter app • Integration of API • Integration with Google Maps • Methods for In-App Payment I will be available full-time for the work and available until you are satisfied with the work. Quality coding, Efficient Solutions for fixing bugs, and available for quick communication during the development period. Can you please share the detailed requirement if available, based on which I can come up with my understanding, queries, and suggestions? Please let me know if you require any additional details from my end. I will be happy to share it with you. Thank you for your time and consideration. With Regards, Nikita Gupta
$25 USD in 40 days
5.7
5.7

Hi, I can help you build this in a structured way so the app feels smooth, simple, and production-ready on both platforms. Since this is a productivity tool, UX matters a lot, and I’d focus on keeping the flows quick and intuitive while maintaining a shared cross-platform codebase. I’m comfortable handling everything from technical planning through testing and release preparation. Once I review your feature list, I can break the work into clear stages and begin with the first clickable/testable version.
$25 USD in 40 days
5.6
5.6

Denver, United States
Member since Jul 26, 2026
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