<p><b>Startup description</b></p><p>My startup is a global calling platform that lets users instantly purchase a U.S. phone number and make calls worldwide. Unlike traditional calling apps, my platform provides seamless connectivity through the web without complicated setups or hidden costs. Users can sign up in minutes, buy a number, and call any mobile or landline directly.</p><p>The service is positioned as a simple, reliable, and cost-effective alternative to Skype and other VoIP providers — giving individuals and businesses the ability to maintain a U.S. identity while connecting across borders.</p><p><b>Key highlights:<b></b></b></p><ul><li>Started in March 2025, currently doing about $4,500 in monthly revenue</li><li>75% net profit margin</li><li>Churn rate: Not applicable</li><li>CAC: $0</li><li>Averaging 40+ new user signups every day</li><li>Buy and activate a U.S. number instantly</li><li>Make calls to any mobile or landline worldwide</li><li>Web-based, no complex software needed</li><li>Affordable rates with transparent pricing</li><li>Ideal for international travelers, remote workers, and global businesses</li></ul><p><b>Team</b></p><p>Just me, one person.</p><p><b>Tech Stack</b></p><p>Next.js, Vercel + Supabase.</p><p><b>Marketing and growth</b></p><p>None.</p><p><b>Revenue and profit</b></p><p>The product does $54,000 in Annual revenue (based on the last 3 months of revenue) with 75 to 80% net margins. I have a strong conviction that this can be doubled (very easily) and even parabolic growth with a bit of marketing.</p><p><b>Return on investment</b></p><p>I expect the revenue to grow, and it is likely to reach $10k/ month with just time. This would easily do annually $120k with 75% margins. If you add some marketing (which, by the way, is currently $0), this can go parabolic.</p><p><b>Startup assets<b></b></b></p><ul><li>Everything (including users, domain, etc)</li></ul><p><b>Risks</b></p><p>Risks include the backend being the limiting factor.</p><p><b>Summary</b></p><p>Worth it for someone who can do a bit of marketing to really boost the revenues (there's no limit). I'm just a builder; marketing isn't my forte. This app gains 40+ users every day with 0 marketing!</p></br>✅ $18,500 in Annual Revenue✅ 4,500 customers✅ Business model: Credits✅ Built with Next.js, Supabase, Vercel