Is the KeepCalling app legit?

Yes. KeepCalling has operated since June 2002 from Georgia, USA, founded by Florin Miron. It is the consumer-facing brand of parent company NetCorp (later renamed to KeepCalling), which also runs BossRevolution-style services in some markets. The app has BBB accreditation, Trustpilot ratings in the 4-star range with thousands of reviews, and clear payment processing through standard card processors and PayPal. Rate accuracy and no-hidden-fees claims hold up under scrutiny. Like any prepaid-credit calling service, the main risk is inactivity-based credit expiration if you stop using the account, but KeepCalling does not have a documented pattern of fee surprises or account problems.

Who owns KeepCalling?

KeepCalling is owned by KeepCalling LLC (formerly NetCorp), a privately held US company headquartered in Lawrenceville, Georgia, founded by Florin Miron in June 2002. The company has not been publicly acquired, and there is no parent corporation listed in current filings; it remains independent and founder-led after 24 years. KeepCalling also operates affiliated brands BossRevolution Money (separate from BOSS Revolution calling, despite the name overlap; the BOSS Revolution calling brand is owned by IDT Corporation, not KeepCalling) and a few mobile top-up services. For US callers, the operational support and account management run out of the Georgia office.

How much does KeepCalling cost to start using?

KeepCalling requires a $5 minimum top-up to begin using pay-as-you-go credit. At $0.01/minute to US landlines, that $5 buys 500 minutes (or 250 minutes to US mobiles at $0.02/min). There is no monthly fee on PAYG, no connection fee per call, and no maintenance fee deducted from the balance, per the published terms. Monthly auto-renew plans are available for specific destinations at varying prices. Credit balances roll over when you switch between plans. The credit expiration policy after extended inactivity is not published on the PAYG page; check current account terms before topping up if you only call rarely.

Will KeepCalling work with my foreign phone number for verification?

Yes. KeepCalling allows account signup with international phone numbers and email, and the app does not require a US-based phone number for verification (unlike Google Voice). Account verification typically goes through email confirmation plus an SMS code that can be sent to any international mobile number. Payment is accepted via Visa, Mastercard, American Express, Discover, and PayPal from most countries, with PayPal being the most flexible for callers in regions where US card acceptance is sporadic. The app interface is available in multiple languages, including Spanish, Portuguese, French, German, Arabic, Romanian, and Hindi, reflecting its multi-country user base.

KeepCalling vs WorldDialer: Honest Comparison for 2026

KeepCalling charges $0.01 per minute to US landlines. WorldDialer charges $0.04. On rate alone KeepCalling wins by four to one, though at these numbers the gap stays small until you call a lot. Both services start you at a $5 minimum top-up, and both hold your credit as a balance. The difference comes after that. With KeepCalling you install an app and manage an account. With WorldDialer you place the call from a browser tab you already have open.

Here's the head-to-head.

The Quick Answer

KeepCalling and WorldDialer solve overlapping but different problems. KeepCalling is a 24-year-old international calling service with broad destination coverage and app-based delivery. WorldDialer is a browser-only dialer that reaches 214 destinations with nothing to install.

Pricing. KeepCalling: $0.01/min PAYG; monthly plans available. WorldDialer: $0.04/min, no subscription required.
Cheapest tier. KeepCalling: $0.01/min ($5 min top-up). WorldDialer: $0.04/min, $5 minimum top-up.
Coverage. KeepCalling: 200+ destinations. WorldDialer: 214 destinations.
App required. KeepCalling: App preferred (iOS/Android), web alternative. WorldDialer: Browser only.
Credit balance. KeepCalling: Yes (pay-as-you-go top-up). WorldDialer: Yes (credits from $5, never expire).

Two different shapes of service. KeepCalling is cheaper per minute. WorldDialer is simpler per call. Pick based on which constraint actually matters to you.

What Each Service Actually Does

KeepCalling covers outbound international calling from anywhere to 200+ destinations. WorldDialer covers 214, priced route by route: 4¢ a minute to the US, Canada, Mexico, and most of Western Europe, and higher where the route costs more to reach.

If you're in Argentina and need to call your cousin in Italy, both work. WorldDialer lists Italy at 4¢ a minute. Price it against KeepCalling's rate for that route and take the cheaper one.

If you're in Argentina and you need to call your bank in Chicago, both work. That's where this comparison lives — and where the math gets interesting.

WorldDialer's pitch is friction: 214 destinations from your browser, with no app and credit that never expires. Where KeepCalling's rate for your route beats ours, KeepCalling is the better fit and we're not going to pretend otherwise.

KeepCalling Pricing in 2026

KeepCalling charges $0.01 per minute to US landlines on its pay-as-you-go credit, with a $5 minimum top-up to start. Monthly auto-renew plans are available for specific destinations, with the option to cancel anytime.

Pay-as-you-go. Price: $0.01/min to US. What You Get: $5 minimum top-up, 1-min billing, no hidden fees. Best For: Sustained US callers.
Monthly Plans. Price: Varies by destination. What You Get: Auto-renew every 30 days, cancel anytime. Best For: Heavy single-country callers.
Credit rollover. Price: —. What You Get: Balance carries over when changing plans. Best For: All paid users.

A few honest notes on KeepCalling.

The 24-year track record matters. KeepCalling was founded in June 2002 in Georgia, USA, by Florin Miron. They've been doing this since before most international calling apps existed. Long-established companies survive in this market by getting the basics right — and the basics here are rate accuracy, no hidden fees, and stable account infrastructure. KeepCalling has those.

No hidden fees is real. The PAYG page explicitly states no per-call connection charges and no maintenance fees. That's not true of every competitor in this category — some services advertise low per-minute rates but stack on $0.50-1.00 connection fees per call. KeepCalling doesn't do that. The $0.01/min is the actual cost.

The app is the main delivery. KeepCalling runs through an iOS or Android app, with a web-portal alternative for desktop. If you're comfortable with app-based calling workflows, this is fine. If you're not, that's where this comparison gets interesting.

The Per-Minute Math

On per-minute math, KeepCalling beats WorldDialer at every volume. $0.01 against $0.04 is a four-to-one gap. That's not subtle.

3 calls/year (30 min). KeepCalling PAYG: $5 minimum (uses $0.30). WorldDialer: $5 minimum, of which you use $1.20.
100 min/year. KeepCalling PAYG: $5 minimum (uses $1.00). WorldDialer: $5 minimum, of which you use $4.00.
100 min/month. KeepCalling PAYG: $12/year. WorldDialer: $48 per year.
500 min/month. KeepCalling PAYG: $60/year. WorldDialer: $240 per year.
1,000 min/month. KeepCalling PAYG: $120/year. WorldDialer: $480 per year.

That four-to-one gap holds at every volume in the table, including the smallest ones. Both services start at a $5 minimum top-up, so three calls a year totaling 30 minutes costs $5 either way, and the unused credit sits in your account on either service. They differ on what happens to that leftover credit. WorldDialer credit never expires. KeepCalling does not publish an expiration policy for extended inactivity.

For any sustained calling volume — 100 minutes a month and up — KeepCalling is cheaper. The math doesn't lie.

For the broader pricing landscape across multiple services, the best international calling app breakdown covers per-minute rates, subscription models, and app-vs-browser tradeoffs across the full market.

When KeepCalling Wins

KeepCalling wins if you call the US more than a few times a month, or if its rate to your destination beats ours.

Sustained US callers get the better rate. At 100 minutes a month you pay $12/year on KeepCalling versus $48 on WorldDialer. At 500 minutes a month you pay $60/year versus $240. The longer you call, the more the per-minute spread compounds.

Multi-country callers should price the route. WorldDialer covers 214 destinations, KeepCalling 200-plus. Our card is 4¢ to the UK and Mexico and 6.48¢ to India, then 27.3¢ to the Philippines. Check both for the number you dial most.

App-comfortable users won't blink at KeepCalling's workflow. Install the app, top up $5, dial. If you already manage WhatsApp, banking apps, and a dozen others on your phone, one more calling app is no friction.

If you already have a KeepCalling account that's working for you, there's no reason to switch. The rate is good and the service is stable.

When WorldDialer Wins

WorldDialer wins if you call the US a handful of times a year and would rather not install an app to do it.

Three calls a year to a US bank costs $1.20 of credit on WorldDialer, out of the same $5 minimum KeepCalling asks for. You spend the same $5 either way, so it comes down to whether you want an app on your phone for three calls a year.

The WorldDialer case here is friction economics, not per-minute savings. KeepCalling beats us on per-minute math for any sustained volume — we said that in Section 4 and it's still true. What WorldDialer offers instead:

No app to install
Credits start at $5 and never expire
Credits that never expire
No monthly plan to remember to cancel
Works in any browser, from any device

WorldDialer bills the call against your credit, and that's the end of it. The rest of your credit stays in your account and never expires. There's no app to install, and no login to recover six months later when you need to make another call.

For occasional callers, this is the cheapest international calling app math when you account for actual use rather than per-minute headline rates.

The $5 Question

KeepCalling's $5 minimum top-up isn't a lot of money, and neither is ours. For most callers, the $5 either service asks for isn't what decides it.

Five dollars is real, but it's not the same kind of real as Rebtel's $10 minimum. If you call US numbers even casually, say 100 minutes over a year, you spend part of that $5 on either service and the rest stays in your account.

Both services ask for the same $5. WorldDialer adds two things. Your credit never expires, and you place the call from a browser tab without installing anything.

KeepCalling's credit expiration policy isn't published on the public PAYG page in specific months. Check current account terms before topping up if you call only rarely. Long inactivity policies are standard in this category.

Decision Rule

Call the US more than a few times a year: KeepCalling. Cheaper on their card for your route: KeepCalling. Call once or twice a year and hate apps: WorldDialer.

Call a route KeepCalling prices lower. Pick: KeepCalling.
Call US sustained (100+ min/month). Pick: KeepCalling.
Call US a few times a year. Pick: WorldDialer.
Hate apps + account management. Pick: WorldDialer.
Want credit that never expires. Pick: WorldDialer.
Already happy with KeepCalling. Pick: Stay with KeepCalling.

That's the comparison. Pick the one that matches what you actually do.

Skip the Setup If You Don't Need It

If you call the US a few times a year and would rather not install an app, you can open worlddialer.com, add $5, and place the call.

WorldDialer: $0.04/minute to US landlines, pay-as-you-go. Browser-based. No app, no subscription required, and credits from $5 that never expire.

If you're calling more than that, or KeepCalling's rate to your destination beats ours, KeepCalling is the right answer. We'll be here if your needs change.

→ Try WorldDialer

---