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Dialvia

It's a web app that allows users to call other users via the web. It uses a credit based system where to users have to buy credits to make calls

SaaS · Founded 2025 · United Kingdom

SaaS
Travel
Utilities

Visit dialvia.com ↗Founder interest ↓

Can you vibecode this?

Yes

Auth, credits via Stripe, and a WebRTC-to-PSTN bridge through a VoIP API (Twilio-class) are all clean scope. Caller ID passthrough and virtual number rental are standard API features. Nothing here requires a licence, catalogue, or headcount.

Build This with Leapd →

The business

Total revenue

$20K+

Verified recently

Monthly revenue

$2K+/mo

↑ Growing · 60-day average

Peak month

~$3K

Best single month

Growth

~3.5×

Early months vs recent

For owners

Own Dialvia? List it for sale.

Founders read this page looking for a business to build like your $2K+/mo one — some would rather buy one that already works. They skip the line, you get a clean exit. $25 one-time, no commission.

Why it works

Value proposition
Make international calls from a browser at a fraction of carrier rates.
Problem
Mobile carriers charge excessive fees for international calls.
Audience
Travellers and expats who call foreign numbers regularly.
Business model
First call free, then pay-as-you-go credit top-ups starting at $5; optional virtual number rental.

Good to knowFirst call freeCredits never expire7-day money-back guaranteeReferral programTrustpilot reviews

Can you vibecode this?

Yes

Moat

Brand & trust

Why people pay Dialvia

Dialvia has 100,000+ calls made, a 5/5 Trustpilot rating, and verified user reviews across specific use cases. A fresh copy starts with none of that social proof, which matters when users are trusting a new service with real calls to banks and government lines.

Product complexity
Low
A web app with accounts, a credit wallet, a rate calculator and a call interface is standard to build.
Data
Moderate
Per-country per-number call rates come from a telephony carrier API, not a proprietary dataset.
Integrations & infrastructure
Moderate
Outbound and inbound calling to real phone numbers requires a VoIP carrier integration such as Twilio.
Human operations
Low
Credit top-ups and pay-as-you-go billing run automatically with no manual fulfilment.
Regulation / hardware
Low
Browser-to-phone VoIP calling sits within standard telecom regulations for a software intermediary.

Build this business

Use the build specification below with any AI coding tool, or build it directly with Leapd.

Build This with Leapd →

Leapd builds

Web app with credit wallet, rate calculator and browser call interface
Credit top-ups and virtual number rentals charged with Stripe
Twilio or equivalent VoIP carrier connection
A landing page

Leapd runs

Meta ads
LinkedIn and X posts
SEO and AI-search visibility
A daily report of what shipped

Opportunity check

Passes: Proven market: $2K+/mo already paid for it
Passes: Proven model: Pay-as-you-go credits, $5 minimum top-up; optional virtual number rental
Passes: Proven need: Expats need cheap international calls daily
Passes: Buildable: Leapd builds it end to end

build-spec.txt

Build a browser-based international calling web app where users buy credits to call any mobile or landline worldwide, sold on a pay-as-you-go basis.

Product:
- User accounts created with email and email verification
- Browser-based call interface supporting outbound calls to mobile and landline numbers in 150+ countries
- Rate calculator that shows cost per minute by destination country and phone number
- Credit wallet displaying balance, top-up history and per-call usage
- Free first call credited automatically on account creation
- Caller ID spoofing so calls display the user's own verified phone number
- Virtual US phone number rental so users can receive inbound calls in the browser
- Customer dashboard showing call history, credit balance and active virtual numbers

Billing:
- Pay-as-you-go credit top-ups ($5, $25, $50 tiers) and a recurring virtual number rental fee, charged with Stripe.

Integrations:
- VoIP carrier (such as Twilio) connected via API with the customer's own credentials for outbound and inbound calling and phone number provisioning.