Browser-based pay-as-you-go international calling (Twilio-backed)
A web app that lets travelers, expats and SMBs make cheap international calls in the browser and pay per minute.
Summary
Build a lightweight web VoIP product using Twilio for PSTN termination, Stripe for payments, and a credits-based pay-as-you-go model that supports both individual pay-as-you-go customers and company-level shared balances.
Problem
International calls are expensive and many providers force monthly subscriptions or per-seat pricing that don't fit occasional callers or shared-business usage.
Target customer
Travelers, expats, remote teams and small businesses that need cheap international dialing without monthly seat subscriptions.
Solution
A simple browser-based dialer that charges per-minute credits (purchased via Stripe) and routes calls through Twilio. Offer individual pay-as-you-go flow plus enterprise accounts that use a shared central credit balance.