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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
ID Projek: 40258245
16 cadangan
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16 pekerja bebas membida secara purata ₹8,022 INR untuk pekerjaan ini

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 dalam 7 hari
6.6
6.6

With over 9+ years of experience in web and mobile app development, my team and I offer you a one-stop solution for your Free OTP Site & App project. We possess extensive skills in E-commerce, CMS-based websites, Android, iOS, Java, PHP, HTML/CSS and more. In fact, we have successfully hooked up Twilio, Telnyx, Nexmo or similar gateways to real-time web/mobile front ends before. You can view a demo or repository of similar functionality we've built and get started right away. Not only are we capable of creating a production-ready platform that allows users to request for OTPs through virtual phone numbers and view the codes instantly without any logins or sign-ups but also guarantee all SMS sent to the displayed numbers will be visible on both interfaces within 1 second. Our clean and lightweight UI design ensures SMS are grouped by number and auto-cleared after a configurable period while our powerful back-end infrastructure ensures reliability even during high concurrent traffic.
₹7,000 INR dalam 7 hari
5.6
5.6

As an experienced software and app development agency, Paper Perfect is well-equipped to create and deliver a complete, production-ready platform for your free OTP service. Our team includes expert web and app developers who are experienced in working with Twilio, Telnyx, Nexmo, and other similar gateways. We have hands-on experience creating responsive web platforms and developing high-quality native and cross-platform mobile apps for Android and iOS. We understand the need for robust, reliable solutions that can handle high concurrent traffic while ensuring zero drops in messages—and we have the know-how to make it happen. With our skills in Android, iOS development, JavaScript, PHP, and API integration, we're confident we can provide you with a clean, lightweight UI that matches your vision. By choosing Paper Perfect, not only will you benefit from our technical expertise but also our commitment to providing exceptional results on time within budget. I am certain we can meet all your key technical needs including no end-user authentication, sub-second polling/web-socket push and lightweight UI with auto-clears old codes after a configurable period. Let us make your free OTP site and app a reality.
₹7,000 INR dalam 7 hari
3.8
3.8

I can build the high-speed infrastructure required for sub-second OTP delivery. My focus will be on a WebSocket-driven architecture (using Node.js or Laravel Reverb) to ensure that the moment an SMS hits the gateway, it "pops" onto the user's screen without them ever hitting refresh. Technical Strategy: The Stack: I recommend a React Native companion app and a React/Tailwind web front-end. This allows us to share the real-time logic across both platforms seamlessly. The Engine: I’ll implement Webhooks from your chosen provider to push data instantly to a centralized database (MySQL/Redis), which then broadcasts to all active web and app "listeners." The UI: A minimalist, "Inbox-style" interface that groups messages by number. I’ll include an auto-purge script to keep the database lightweight and fast. Admin Control: A private dashboard for you to manage the number pool and monitor traffic spikes. Addressing the "No Cost" Requirement: Since carriers always charge for numbers, we should discuss integrating AdMob or crypto-micro-donations to cover the API overhead, or utilizing specific "long-code" providers that offer bulk volume discounts. Deliverables: Web Platform + Android/iOS builds. Full Admin Panel with automated number recycling logic. Complete source code & deployment documentation. Would you like to discuss which SMS provider offers the best volume rates for the Indian or global market to keep your overhead as low as possible?
₹7,000 INR dalam 7 hari
3.6
3.6

Free OTP Site & App I'm excited after reviewing your project details! With over 5 years of hands-on experience in Web and App Development, I specialize in building high-performing, user-friendly, and fully responsive digital solutions tailored to your business needs. I hold an academic background in Computer Science and have successfully delivered numerous projects across various industries. My expertise includes: Custom Website Development (React, Angular, Laravel, PHP, WordPress, etc.) Mobile App Development (iOS, Android, Flutter, React Native) E-commerce & CMS Solutions (Shopify, WooCommerce, Magento) API Integration & Backend Development UI/UX Design & Prototyping Bug Fixing, Speed Optimization & Maintenance ✔ Clean, Scalable & Secure Code ✔ 100% Mobile & SEO-Friendly ✔ Ongoing Support & Unlimited Revisions Let’s turn your idea into a powerful digital product that exceeds expectations! Check my profile: https://www.freelancer.com/u/QuickMentor Looking forward to working with you!
₹7,000 INR dalam 7 hari
3.0
3.0

I understand you require a seamless OTP platform that delivers SMS codes instantly to both a responsive web interface and a companion mobile app without any user login or sign-up. You need unlimited virtual numbers that auto-recycle and real-time message updates within one second, all with a clean, lightweight UI that auto-clears old codes. With over 15 years of experience and more than 200 projects completed, I specialize in full stack development using PHP and JavaScript, along with mobile app development in React Native. I have integrated SMS gateways like Twilio and Nexmo into real-time web and mobile applications, ensuring fast and reliable message delivery and synchronization. For your project, I will build a scalable backend using PHP to manage the number pool and SMS reception, employing web sockets or sub-second polling for instant updates on both web and app. The mobile apps will be cross-platform React Native builds mirroring the web functionality. An admin panel will let you control numbers and monitor traffic, and I will provide full source code and deployment instructions. A realistic timeline for completion is four to six weeks. Let’s discuss your specific needs further so I can tailor the solution exactly to your expectations.
₹1,650 INR dalam 7 hari
2.6
2.6

As a seasoned full-stack developer with extensive experience in WordPress, PHP, and Mobile App development, I can provide you with an exceptional and robust OTP platform that perfectly meets your needs. My knowledge of JavaScript will ensure smooth sub-second polling or web-socket push messaging between your responsive web interface and the mobile app. Over my 8-year career, I've built teams, enthusiastic teams, worked on multiple projects, and created high-quality websites that cater to specific client requirements—this has sharpened my ability to fully understand client needs and deliver accordingly. Leveraging my experience integrating gateways like Twilio, Telnyx, Nexmo, I assure you that the system we'll create will reliably handle high concurrent traffic without dropping messages. Given my expertise in clean design approach and given that one of your key requirements is a clean lightweight UI for grouping messages by number and autoclearing old codes, makes me an ideal fit. Moreover, your acceptance criteria and aforementioned requirements are well within my technical competence and capacities. Check out my portfolio or similar functionality demos: if you like what you'll see thereafter ad our work together is going to be as smooth as a whistle. Only have one unwavering promise through this: you won't be charged absolutely anything from start
₹7,000 INR dalam 7 hari
2.3
2.3

With an impressive proficiency in API integration--a crucial aspect for this project--, I am confident that I can deliver a high-quality OTP system that is both comprehensive and tailored to your unique needs. My exposure to frameworks like Twilio, Telnyx, Nexmo has given me valuable firsthand experience in voice and messaging APIs, which is essential for your SMS-based verification service requirement. I have even developed real-time web/mobile front-ends, similar to the ones you requested using web sockets to ensure a sub-second polling or push notification functionality. As a Full Stack developer specialized in MEAN/MERN stack, I have created clean and lightweight UI designs that not only meet user needs but also enhance their overall experience. My skills in React and Angular combined with my database optimization abilities ensure that the application will be performant even during high traffic scenarios. Additionally, my deployment capability across platforms such as AWS, DigitalOcean, etc. means the app will be up and running seamlessly. Lastly, but equally important, I completely align with your budgetary requirements. I guarantee a penny-free charge during development and once deployed you won't incur any expenses using the app. To sum up, if you are looking for assurance in technical expertise and value for money solution, collaborating with me would indeed be a wise move. Let's connect and discuss further details!
₹1,500 INR dalam 5 hari
0.9
0.9

Hello, I can build your complete **real-time OTP Web + Mobile platform** exactly as described — fast, scalable, and production-ready. ✔ Unlimited virtual numbers displayed ✔ SMS webhook integration (Twilio/Telnyx/Vonage supported) ✔ Instant OTP visibility (≤1 sec) using WebSockets ✔ No login system — direct inbox access ✔ Auto-refresh + auto-delete old messages ✔ High concurrency handling with queue + optimized DB ✔ Admin panel to manage numbers & monitor traffic **Tech Stack:** Backend: PHP (Laravel) or Node.js Realtime: WebSockets Mobile App: React Native (Android + iOS single codebase) Deployment: Live on your domain with full setup The web and apps will mirror each other in real time. Clean UI, lightweight structure, and scalable architecture included. You’ll receive: • Live deployed web platform • Android & iOS builds • Admin dashboard • Full source code + documentation I have prior experience integrating SMS gateways with real-time systems and can share demo architecture on request. Ready to start immediately and deliver within timeline.
₹9,000 INR dalam 7 hari
0.0
0.0

Hi I have read your requirement and I am confident I can help you build a production-ready, real-time OTP platform with zero login and instant delivery. Please message me so that we can have a detailed discussion. I have 8+ years of experience in Full-Stack and Mobile Development, with expertise in React.js, React Native, Flutter, Node.js, Python/Django, and integrating SMS gateways like Twilio, Nexmo, and Telnyx. I can deliver: Responsive web platform and Android/iOS apps showing OTPs in ≤1 second Unlimited number pool with automatic recycling Clean, lightweight UI that auto-refreshes and groups messages by number Admin panel to add/remove numbers and monitor traffic Full source code with setup documentation for redeployment System optimized for high concurrent traffic with zero dropped messages Zero charges for development and usage, fully free for the owner Looking forward to connecting on chat for further discussion. Thanks and Regards, Surendra Bheema Infotech Pvt Ltd, Indore (M.P)
₹8,000 INR dalam 2 hari
0.0
0.0

I recently helped a client build a real-time SMS verification platform using Telnyx that displayed incoming OTPs instantly across web and mobile, achieving sub-second update times under high load. I bring 5+ years of hands-on experience and a track record of delivering high-quality, practical solutions. I keep projects organized, communicate clearly, and ensure deadlines are met. My goal is simple: efficient execution and a result you’re proud of. I can start right away. While I am new to Freelancer, I have tons of experience and have done other projects off site. I would love to chat more about your project! Regards, Cristiano Ferreira
₹9,400 INR dalam 14 hari
0.0
0.0

Hi there, I am a Senior Integration Expert with a strong background in Mobile Development and Enterprise Systems (SAP ERP). I specialize in building high-availability systems that handle real-time data with 100% accuracy. My technical approach for your OTP Site & App: Real-time Dashboard: Using WebSockets to ensure OTPs appear instantly without page refreshing. Robust Backend: Building a scalable API to manage multiple SMS gateways or GSM modem integrations seamlessly. Cross-platform Experience: Delivering a high-performance Android/iOS app (Kotlin/Java) and a responsive Web portal. Enterprise Standards: Applying SAP-grade security and data management to handle high traffic and prevent system downtime. I have extensive experience in API Orchestration, making me the ideal candidate to ensure your OTP service is fast and reliable. Let’s discuss your preferred SMS source! Best regards,
₹7,000 INR dalam 7 hari
0.0
0.0

Jabalpur, India
Ahli sejak Feb 25, 2026
₹600-1500 INR
$2-8 USD / jam
$1500-3000 USD
₹250000-500000 INR
$30-250 AUD
₹12500-37500 INR
$250-750 USD
$15-25 USD / jam
£20-250 GBP
₹1500-12500 INR
$250-750 USD
$10-30 USD
$250-750 NZD
₹12500-37500 INR
$1500-3000 USD
£3000-5000 GBP
$750-1500 USD
$250-750 USD
$3000-5000 USD
₹12500-37500 INR
₹1500-12500 INR