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I need a complete, production-ready platform that lets anyone request an OTP to any virtual phone number and view the code instantly—no login screens, no sign-ups. The service must work in two places: a responsive web interface and a companion mobile app. Core flow 1. Visitor chooses one of an unlimited pool of numbers shown on the screen. 2. They enter that number wherever they need an SMS-based verification code. 3. Within a second of the sender delivering the SMS, the OTP appears in the web view and inside the mobile app, auto-refreshing in real time. Key technical needs • SMS-based verification only; email isn’t required. • Zero end-user authentication; the pages and app open straight to the inboxes. • Unlimited numbers available at all times, recycled automatically when carriers release them. • Sub-second polling or web-socket push so new messages surface instantly. • Clean, lightweight UI that groups messages by number and auto-clears old codes after a configurable period. Deliverables • A live web platform deployed on my domain. • Android and iOS builds (native or cross-platform) that mirror the web functionality. • Admin panel or script to add/remove numbers and monitor SMS traffic. • Full source code with setup documentation so I can redeploy if needed. Acceptance criteria • Any SMS sent to the displayed numbers is visible in both interfaces in ≤1 second. • No login is ever prompted. • System reliably handles high concurrent traffic without dropping messages. If you already have experience hooking Twilio, Telnyx, Nexmo or similar gateways to real-time web/mobile front ends, this should be straightforward. Show me a quick demo or repo link with similar functionality and we can get moving right away. Remember I(the owner) will not be charged for any penny while creating this app and after the production while using the app I should not be charged
Project ID: 40258218
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Active 12 days ago
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10 freelancers are bidding on average ₹5,788 INR for this job

Hi I have read your requirements and I am sure 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. Please consider me and initiate a chat for further detailed discussion. Regards, Anju Logical Soft Tech Pvt Ltd, Indore(M.P)
₹30,000 INR in 7 days
6.6
6.6

Hello Client, Greeting of the day!!!! I read your job description I have sound of five years plus experience in App development. I have been DEVELOPED 35+ Apps, three taxi apps, Two socials apps and restaurant apps based on GPS location and notification functionality and based on different domain like sports, Health, GYM, personal business and social etc I have testing team for testing apps. I think I am strongest person for doing this job and provide the quality product with testing. I am always available for your support. Thanks Sr. Mobile Developer
₹8,462 INR in 2 days
6.7
6.7

Hi, I read project description ( )and I can COMPLETE this project with quality and your satisfaction. My Key points(Android and iOS): 1. AutoLayout and XML design 2. API Integration 3. Social Integration 4. Payment gateway Integration 5. Firebase Chatting 6. Notification 7. Map Integration etc. Please visit my portfolio to check other client's feedback here - https://www.freelancer.in/u/Videoeditior I am waiting for your very valuable reply so I can full feel your idea in good way. Thank you. Akshay
₹5,555 INR in 2 days
3.3
3.3

You’re looking to build a production-ready OTP platform that instantly displays SMS codes on a responsive web interface and companion mobile app without any login or sign-up. The system must handle an unlimited pool of virtual numbers with real-time updates under one second, plus automatic recycling of numbers and a clean UI that groups messages by number and auto-clears old codes. I bring over 15 years of experience in full stack development using PHP, JavaScript, and React Native, with more than 200 projects completed, including API integrations for SMS gateways like Twilio and Nexmo. My background in mobile app development ensures I can deliver seamless cross-platform functionality for both Android and iOS, matching your specifications precisely. To execute this, I’ll build a lightweight web app and React Native mobile app connected to a backend managing SMS retrieval via a gateway API with web-socket push for sub-second message delivery. An admin panel will allow number management and traffic monitoring. I estimate completing this within 3-4 weeks with thorough testing to ensure no login prompts and reliable handling of high concurrent traffic. Let’s discuss your project further so I can share relevant demos and make sure everything fits your needs perfectly.
₹660 INR in 7 days
2.6
2.6

With my 8 years of experience in web and mobile app development, specifically my expertise in JavaScript and PHP, I’m well-equipped to build the production-ready platform you need for your Free OTP Site & App project. Having worked extensively with WordPress, Laravel, and other similar frameworks—as well as integrating Twilio-like gateways—I can ensure a smooth undertaking of your project. I understand the need for a lightweight, responsive UI that streamlines the user experience by eliminating sign-up or login steps and opening straight to inboxes. On top of my technical skills in SMS-based verification flow with sub-second polling or web-socket push for real-time data exchange, I also bring a strong ability to manage high concurrent traffic demand. Given that you’re not looking to be charged during development or after deployment, you can count on me to minimize unnecessary costs while still ensuring you receive a feature-rich platform. My dedication to providing high-quality service extends beyond our initial work together; I'll also deliver full source code with detailed setup docs so that you can redeploy the app if needed later on. Let's have a more comprehensive conversation about your project requirements and how we can make your vision a successful reality! Feel free to reach out and we can discuss this further.
₹1,050 INR in 7 days
2.3
2.3

Hello, Free OTP Site & App Hope you are doing well. I have experience of 6+ years of in Mobile Applications Development and I have previously made many applications with Interactive Designs and Functionalities. I have reviewed your requirement. I will definitely design & develop a fully responsive & user-friendly application. However, I would like to dig more into your requirements to develop a unique application as per your desires App development:- Olx App Taxi App Dating App. Educational App Multivendor App. Hotel and Restaurant Booking App. Doctors/ hospital management App. Please have a look at my portfolio link : https://www.freelancer.com/u/khushiArt Best Regards Khushbu
₹4,500 INR in 10 days
0.9
0.9

Hello. I will complete the OTP website along with android and ios app in React Native with SMS API integrated. Kind Regards
₹1,050 INR in 7 days
0.0
0.0

Jabalpur, India
Member since Feb 25, 2026
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