International calling web app, $1.6K in 30 days: no subscriptions

BubblyPhone sells pay-as-you-go international calls, US numbers, call translation, transcription and developer API services. Its $1.6K in the last 30 days is verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026.

What it actually sells

BubblyPhone combines international calling, US numbers that receive calls and texts, and AI features for calls. Its users include people living in one country who need to contact organizations in another: “Mostly people who live in one country and need to call another.” The service is aimed at people making international calls, including expatriates contacting US or UK organizations.

How it charges

Calls use prepaid credit starting at $5, with per-minute charges based on the destination country. The site states: “No monthly fees, no subscriptions, no hidden charges.” Live call translation includes bilingual captions and transcripts. Call transcription with a short AI summary in call history is listed at $0.02/min, while the developer API uses per-minute billing.

Month by month

Monthly revenue as read from the payment provider by TrustMRR, in US dollars, as of September 30, 2026.

Month	Revenue (USD)
2025-10	$10
2025-11	$35
2025-12	$175
2026-01	$565
2026-02	$747
2026-03	$680
2026-04	$1,215
2026-05	$1,571
2026-06	$1,683
2026-07	$1,495
2026-08	$1,988
2026-09	$1,563

Where customers come from

The site offers free international calling tools with no sign-up required, alongside iPhone and Android apps. It also provides developer API documentation and integration access, plus an MCP server for AI assistants.

What stands out

BubblyPhone combines several call-related products in one service: international calls, US numbers, live bilingual captions, transcripts and AI summaries. The site says users can “call mobiles and landlines in 222 countries from a web browser or phone.” It also lists an AI-powered phone-call developer API with BYO model, per-minute billing and 200+ countries.

From the official site

Mostly people who live in one country and need to call another.

call mobiles and landlines in 222 countries from a web browser or phone

Excerpts from the official website, fetched October 1, 2026.

Where it sits in the data

BubblyPhone's $1.6K in the last 30 days is higher than 80% of the 5,602 projects with payment-verified revenue in our dataset; the median across them is $150. Within the “Customer Support” category (188 projects) it is higher than 74% (category median $274). Snapshot: 2026-09-02 to 2026-09-30. The dataset only covers founders who chose to publish their numbers, so it leans toward businesses that work; use it for scale, not as an average.

Currency

All figures are in US dollars as published. A rough yuan or euro conversion is not applied here because prices, taxes and acquisition costs differ by country.

Could you build something like this?

My view is that the demand is specific: people making international calls, especially expatriates contacting US or UK organizations. The buyer needs a phone number, a way to make calls and useful call handling features.

The hard parts are general: telecom routing, reliable payments, billing, number provisioning, call quality and support. Adding translation, transcription and developer integrations increases the technical and operational surface. Regulation, carrier relationships, privacy requirements and customer-support load would all need attention. The product can start narrow, but the service combines several demanding systems.

Verdict: Needs real work.

One thing to take from it

BubblyPhone’s clearest positioning is pay-as-you-go international calling without monthly fees or subscriptions. It adds US numbers, AI call features and developer access around that core. The site reports 14,000+ minutes of calls, 83,000+ countries called, thousands of users and a 4.9 rating based on 37 verified reviews.

Sources

BubblyPhone official website, fetched October 1, 2026
BubblyPhone about page, fetched October 1, 2026
TrustMRR: revenue verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026

Revenue, team and start-cost figures are what the founder reported at the interview date, not current figures and not a prediction of what you will earn. Product and pricing facts come from the business's own website as checked on 30 September 2026. Method & sources · Disclosure