Budget: 1000 EUR Deadline: 10 days
Hi Jelena,
We can implement your alternative communication app for the MVP with all the described features: cross-platform Android and iOS, multi-language support, offline-only with Firebase Auth and local JSON storage.
Do you already have a design ready such as Figma or UI/UX mockups?
Budget: 150 EUR Deadline: 5 days
Hello, I can implement an MVP offline application for communication on Flutter with a clean architecture for scalability (Android + iOS), including registration via Firebase Auth, local storage of cards (JSON), creation of custom cards and categories, a board for constructing sentences, as well as laying the foundation for multilingual support and future integration of TTS and synchronization via Firebase without reworking the core.
Budget: 25 EUR Deadline: 7 days
Good day, I am ready to work, I specialize in mobile development for Android and iOS.
Budget: 220 EUR Deadline: 1 day
From what you described, this is not just a set of screens, but the foundation for a communication system (cards → categories → sentence building → potentially TTS). And here the key complexity is not UI, but the correct data structure and offline operation logic.
Our value in such projects is to create an MVP in such a way that:
• it works stably offline
• easily scales to synchronization via Firebase
• does not require rewriting when adding TTS or new features
I am the CEO of Mobiwolf, and for this project, I will gather a small but relevant team (mobile dev + UX if needed), and I will oversee the architecture and delivery.
What is important to lay down immediately (and where we can help):
• the correct JSON card structure (to support multilingualism and TTS in the future)
• local storage (for example, via SQLite/Hive) considering future synchronization
• an abstraction layer for Firebase, to easily transition from offline-only to cloud sync
• flexible logic for the “sentence builder” that will not limit you in future scenarios
Regarding the stack: Flutter seems to be the most rational for such an MVP (speed + single codebase), but we can discuss it.
Honestly about the timing: we will be able to fully start in about 3 weeks. However, we can immediately lay the foundation correctly so that we do not have to redo it after the MVP.
To better understand the task and provide an accurate estimate, please let me know:
• is there already a design/prototype (Figma or at least schematic)?
• what is the logic of multilingualism: one card = several languages or separate sets?
• is TTS planned for each card or for the assembled sentence?
• are ready-made card sets “out of the box” (predefined content) needed?
• are there any device/OS version restrictions?
I propose the next step:
let's move to a private chat — you will show more details (specifications/prototype), and I will suggest a specific architecture for your MVP and a development plan for synchronization.
There we will also discuss the working format and rate.
Best regards,
Oleksiy Karaykoza
CEO, Mobiwolf
Budget: 1000 EUR Deadline: 10 days
Hello. I can develop this offline-first alternative communication app for iOS and Android with a scalable architecture for future cloud sync.
I suggest Flutter for a single codebase, with local storage (SQLite/Hive) for cards, categories and boards, and Firebase Auth for registration. The MVP will include onboarding, cards library (JSON-based), custom card creation, communication board with sentence builder, category management, and optional TTS support. The architecture will be prepared for multi-language support and later Firebase sync across devices.
I have experience building offline-first apps with local data, TTS and scalable structure for future cloud integration. Examples can be shared in private. Timeline for MVP is around 3–4 weeks.
Budget: 30 EUR Deadline: 5 days
Good day, I am ready to create a React Native application for you with any modifications and integrations. I have extensive experience and a portfolio of applications on React Native.
Budget: 500 EUR Deadline: 7 days
Hi, Jelena
I’ve reviewed your project and it’s a strong fit for a clean offline-first MVP.
I can build the app for both iOS and Android using Flutter or React Native, with a modular architecture that supports local storage now and future Firebase cloud sync later.
For the MVP, I would focus on delivering a stable core with
App installation and first-launch flow.
Onboarding and registration screens.
Firebase Auth only for login/identity.
Local storage for cards, categories, boards, and settings.
Cards library stored as JSON.
Custom card creation.
Communication board / sentence builder.
Create new category flow.
Multi-language ready architecture from day one.
My approach would be to keep the first version lightweight and reliable, with no unnecessary integrations.
That means building the app so it works fully offline after login, while structuring the data layer and codebase in a way that makes future cloud sync straightforward when you’re ready to expand.
For the future phase, I would prepare the architecture for Firebase sync of cards, boards, and settings across devices, so the MVP can evolve without a rewrite.
If TTS is needed later, I can also design the app so text-to-speech can be added cleanly as a separate module.
I can deliver clean code, clear milestones, and regular progress updates throughout the project.
If helpful, I can also suggest whether Flutter or React Native is the better fit depending on your preferred UI speed, long-term maintenance, and language support strategy.
Thank you
Budget: 1000 EUR Deadline: 10 days
Hello! I work with Flutter, I can implement your project. Write the details - we will agree.
Budget: 1000 EUR Deadline: 4 days
Hi!
I’m a professional mobile developer and have already built apps with similar functionality (including offline-first logic, custom data storage, and flexible UI builders).
This project is very clear, and I can implement the MVP with clean architecture (ready for future Firebase sync, multi-language support, and TTS).
I’ll send you examples of similar apps I’ve worked on.
Budget: 1234 EUR Deadline: 12 days
Good day
I have experience in mobile application development and I am ready to implement an MVP offline application for communication. I recommend Flutter - fast development for iOS and Android + convenient support for local storage and scalability.
I will implement: registration (Firebase Auth), local storage of cards (JSON), creation of custom cards, categories, a board for sentence construction. I will lay out the architecture with support for multilingualism and the possibility of connecting TTS in the future.
The code will be clean and ready for further expansion (synchronization via Firebase).
I am happy to discuss the details and start working.
Budget: 400 EUR Deadline: 2 days
Good day. I am ready to complete this project as I have extensive experience in application development.
Budget: 500 EUR Deadline: 1 day
Hello, I have experience developing apps from concept to final stages.
Send me a private message, and we can discuss pricing and timing there.
I’d be happy to help you!
Budget: 2000 EUR Deadline: 30 days
Good day!
I am a Flutter developer with over 3 years of experience in creating mobile applications for iOS and Android.
I work with the following stack:
• Flutter / Dart
• Firebase
• Supabase
• REST API integrations
• Push notifications
• Local databases
• State management (Riverpod / Bloc)
I have experience in developing applications with authentication, user profiles, news, voting, and internal services for companies.
I would be happy to discuss the project details and estimate the timeline and cost.
Budget: 2000 EUR Deadline: 15 days
Hi Jelena,
I have built similar app as your requirements using React Native expo.
I can build MVP and release version perfectly.
My unique question is that if you have Figma design or alternatives.
Let's connect and discuss in detail.
Best,
Jeo
Budget: 101 EUR Deadline: 1 day
Hello!
I am a Flutter and React Native app developer with experience!
I can develop a quality application using these technologies and also work with Firebase.
There are many completed projects, in particular, my portfolio: 
Freelancehunt
I would be happy to discuss in more detail!
Budget: 1500 EUR Deadline: 10 days
Good day!
I can implement this application for you in React Native (iOS and Android) taking into account all the requirements for the MVP.
I have experience in:
building mobile application architecture
working with local data storage (offline-first)
Firebase Auth
creating custom logic (constructors, working with JSON, interactive screens)
I am ready to implement:
onboarding and authorization
registration screen
saving cards (locally, JSON)
creating and managing custom cards
a board for sentence construction
basic architecture with the ability to scale for Firebase synchronization in the future
I will also immediately establish the correct project structure so that in the future it will be easy to add:
synchronization between devices
cloud storage
TTS functionality
Budget: 3300 EUR Deadline: 30 days
Hello!
We have over 8 years of experience in mobile app development (iOS and Android). We also have strong expertise working with Firebase (Auth, Firestore, data synchronization) and building scalable mobile solutions.
Your project looks very interesting — especially the communication board and sentence-building functionality, as these features require well-thought-out UX.
At a high level, the MVP (offline-first + Firebase Auth) seems quite feasible. However, the final estimate will strongly depend on the implementation details and design.
Could you please share the design and a more detailed specification?
This will allow us to provide a more accurate time and cost estimate.
Additionally, it would be helpful to clarify:
whether images/icons are planned for the cards
the expected complexity of the communication board (drag & drop or simple tap)
whether audio/TTS support is required in the MVP
We would be happy to discuss the details and propose the most optimal technical solution
Budget: 2000 EUR Deadline: 30 days
I can build your offline-first MVP using React Native (Expo) with Firebase Auth and local storage. I’ve worked on similar apps with structured data, clean architecture, and scalable setup for future sync.
Examples:
1. Settle: Nervous System Reset
iOS: https://apps.apple.com/us/app/settle-nervous-system-reset/id6751709642
Android: https://play.google.com/store/apps/details?id=com.settle.app
2. Speakbolt - Practice English
iOS: https://apps.apple.com/us/app/speakbolt-practice-english/id6742692694
Android: https://play.google.com/store/apps/details?id=com.merrierdigital.speakbolt
3. Zano - cryptocurrency wallet
iOS: https://apps.apple.com/us/app/zano-wallet/id1506829937
Android: https://play.google.com/store/apps/details?id=com.zano_mobile
Budget: 350 EUR Deadline: 30 days
Hello! I have reviewed your assignment and believe that I can successfully complete it. I would be happy to collaborate, please write to me personally for further details.
Budget: 28 EUR Deadline: 1 day
Hello) I have 10 years of experience in developing mobile applications and websites of varying complexity on React Native (+TypeScript), React.js (Next/SSR +TypeScript), Node.js backend (Express/Nest) + MongoDB, FireBase + TS technology stack.
I have experience in developing large-scale projects for logistics, transportation, online stores, sports, restaurants, medical applications, social applications, and many others.
I'm a result-driven developer - I feel happy when my work touches real people, solves real problems, gives moments of clarity, confidence, or even delight. I am confident that my experience and skills will help make the project productive and convenient for all users
Write to me so that we can talk more about your idea and I can provide an assessment of the project, communication is the key to successful implementation.
Best wishes for your project, Alexey
Budget: 2500 EUR Deadline: 10 days
Hello! I am a mobile developer with over 5 years of commercial experience, particularly in creating messengers and social networks. I offer to implement your project in React Native. I will establish a scalable architecture that will be ready for multilingual support and further transition to full synchronization with Firebase. I have experience working with local databases and TTS. Write to me, and we will discuss the details, price, and deadlines.
Budget: 250 EUR Deadline: 10 days
Hi!
I’m a UI/UX designer and mobile-focused creator with experience building simple, clean, and user-friendly interfaces — especially for MVP products.
Your app idea is clear and well-structured, and I can help you turn it into a working, intuitive product with a strong foundation for future scaling (Firebase sync, multilingual support, TTS).
What I can do for you:
• Design a clean and accessible UX for onboarding, registration, and core flows
• Build a logical structure for cards, categories, and sentence builder
• Create a simple but scalable UI system (ready for future cloud sync)
• Prepare developer-friendly layouts (Flutter / React Native ready)
I understand the importance of keeping MVP simple, fast, and offline-first — while thinking ahead.
Ready to start immediately.
Let’s build something solid.
open to discussion depending on scope”
Best regards,
Tigran
