Flutter/React native developer for a simple cross-platform application

Below is an example of a detailed technical specification for the development of a mobile application. Text composition Technical specification Project Mobile application for random communication (roulette) Platforms: Android iOS 1. Purpose of the project Create a modern mobile application for dating, communication, and finding conversation partners based on random selection (Chat Roulette), with the ability to filter users by specified criteria. The application must support: text chat; voice chat; video chat; instant switching to the next conversation partner; search by interests; search by country; search by language; search by gender; search by age; advanced filters; moderation system; administrative panel. 2. Types of communication Text chat Features: message exchange; sending Emoji; GIF; stickers; photos; videos; documents; voice messages; message deletion; message editing; reply to message; forwarding messages; pinning messages. Voice chat Features: call to one user; random voice partner; Next switch; microphone mute; volume adjustment; call recording (if permitted); noise cancellation; HD Voice. Video chat Features: Full HD 2K 4K (if device supports) Functions: camera switching; background blur; virtual background; video off; screen sharing; recording; screenshot; picture-in-picture mode; instant Next switch. 3. Roulette principle The user presses the button Start After which the system automatically selects a random conversation partner. There are buttons Next Pause Stop If there are no matches, a message is displayed "Searching for a partner..." 4. Search filters Age 18–25 25–35 35–45 45+ Gender male female any Country Any country in the world City Optional Language All major languages Interests music movies travel sports programming cars games animals medicine business politics education any custom tags Online currently online recently online Type of communication text voice video 5. Registration Registration methods Email Google Apple ID Facebook Telegram phone number anonymous mode Verification Email SMS CAPTCHA 6. User profile Photo Video Name Nickname Age Gender Country City Interests Languages Description Status Registration date Last online Verification Rating 7. Personal account Communication history Favorite users Black list Settings Notifications Premium subscription Purchases Payment history 8. Premium No ads Priority search Region selection Advanced filters Unlimited likes Unlimited switches HD video VIP badge Invisible mode 9. Monetization Subscription One-time purchases VIP Gifts Coins Advertising 10. Administrative panel User management Blocking Deletion Photo moderation Video moderation Message moderation Viewing complaints Statistics Online Income Payments Push notifications News Banners Application settings Logs Backup 11. Complaint system Report Reasons: spam fraud insults pornography violence minors advertising other 12. Security SSL HTTPS Message encryption Two-factor authentication CAPTCHA Anti-spam Anti-bot VPN/Proxy detection Automatic moderation AI moderation 13. Push notifications New message Missed call New partner Response to complaint News Updates 14. Technologies Frontend Flutter or React Native Backend Node.js NestJS Database PostgreSQL Redis File storage Amazon S3 Video and voice WebRTC Push Firebase Cloud Messaging Apple Push Notification Service Admin panel React Vue.js 15. Performance Time to find a partner up to 3 seconds. Support for at least 1,000,000 registered users. Up to 100,000 users online simultaneously. 16. Additional features Real-time message translation Voice translation AI assistant Automatic speech recognition Automatic subtitles Augmented reality (AR) masks Background blur Virtual rooms Group video chats Streaming Create your own rooms Invite friends Profile QR code Dark and light themes Multilingual interface Built-in analytics system 17. Compliance requirements The application must comply with the requirements of Google Play and Apple App Store, as well as ensure the protection of personal data (GDPR) and support user consent for data processing. This technical specification serves as a basis for commercial development. If necessary, it can be expanded into a full document of 100–150 pages with UX/UI prototypes, database architecture, API, screen layouts, user roles, moderation system, monetization, AI matching of partners, and detailed descriptions of each section.

It is necessary to transfer all information in Viber with chats and files from iPhone 13 to Samsung S26 Ultra.

Develop a mobile application (iOS and Android) that will automatically import health and physical activity data from smartwatches (Garmin, Huawei, Apple Watch, Samsung, Fitbit, Polar, etc.) through official integrations (Apple HealthKit, Google Health Connect, as well as manufacturers' APIs where possible). The application must: automatically synchronize data with our server database; store the complete user history; send data for analysis to ChatGPT; allow ChatGPT to analyze long-term trends and provide personalized recommendations (sleep, recovery, workouts, VO₂ Max, HRV, health metrics, etc.). At the first stage, it is necessary to determine the optimal technical solution for the automatic import of data from various smartwatch ecosystems.

Development of Telegram Mini App "SlashX" About the project A modern Telegram Mini App called SlashX needs to be developed. The main idea is a gaming platform within Telegram, where the user completes tasks, earns in-game currency, levels up, participates in rankings and tournaments, and invites friends. This includes several links to casinos where the game directs the player. It is important to create not just a Telegram bot, but a beautiful Mini App with modern design and smooth animations. Interface style: dark theme; bright neon colors (purple + lime); modern gaming UI; mobile game level design. Main screens 1. Home Should display: user avatar; nickname; level; XP progress; balance of in-game currency; Daily Bonus; quick access buttons; seasonal progress (Season Pass); latest bonuses; large navigation buttons. 2. Tasks Types of tasks: subscribe to a Telegram channel; view news; visit a partner; complete special missions; daily tasks; achievements. After completion, the user receives in-game currency. 3. Casinos (partners) A list of partners in the form of beautiful cards. Each card should contain: logo; rating; bonus; "Activate Bonus" button. After clicking, a partner link opens. 4. Friends Referral system. Features: referral link; "Invite" button; friends list; number of active friends; earned from referrals; statistics. 5. Tournaments Needs: leaderboard; user's position; prize pool; timer; seasonal tournaments. 6. Profile Should contain: avatar; level; XP; balance; transaction history; promo codes; settings; support. In-game currency The project uses its own currency. With it, the user: unlocks bonuses; plays mini-games; receives rewards; participates in internal mechanics. Referral system The user receives a personal link. For each new user, they receive a bonus. Protection against manipulation is necessary. Admin panel Should allow: adding partners; changing bonuses; creating new tasks; managing users; viewing statistics; launching newsletters; creating promo codes; changing seasons; managing tournaments. Push notifications The ability to send messages to all users via the Telegram bot is needed. For example: new bonuses; new partners; promotions; tournaments; seasonal events. Contact me, I am ready to make adjustments to the project

We are developing a photo editor with AI features similar to FaceApp. The design and layout are entirely on our side — you are required to provide the backend and integrate neural network functionality. What needs to be done: • Backend for photo processing (uploading, processing, delivering results) • Integration of AI filters: age modification (aging/rejuvenation), gender change, smile, hairstyles, makeup, backgrounds, background replacement • Image processing queue and optimization of response speed • Storage and management of user photos (considering privacy) • Integration of a payment system and subscription model (in-app purchases), likely with web view to bypass Apple's 30% fee. • API for communication with the frontend (we will handle the frontend ourselves) Requirements: • Experience in developing iOS applications (Swift) • Experience with ML/CV — own models or integration of ready-made ones (Stable Diffusion, GAN models, third-party AI APIs) • Understanding of image processing on the backend • Portfolio with similar projects is welcome What is important: The quality of the result must not be inferior to FaceApp — the content and functionality should be at the same level. If you have ideas on how to make something better or more interesting — we are open to suggestions, but this is not a priority. The main thing is a stable working product.