9 Best International Calling Apps of 2026

WhatsApp ranks first because for most international calls the cheapest option is a call that never touches the phone network. Its calling page states that voice and video calls are free, have no time limits and are end-to-end encrypted, and the only cost is the data you use. Group calls hold up to 32 people with unlimited duration, which covers a family call across three continents, and you can share your screen or schedule a group call in advance. Calls work from iOS, Android, Mac, iPad and Windows apps, and WhatsApp Web lets you call straight from a browser. The limit is reach: WhatsApp cannot dial a landline or a mobile number that is not on WhatsApp, so a grandparent with a basic phone or a hotel front desk needs a different app. Travelers should also note WhatsApp's own warning that data charges may apply, so use Wi-Fi or a data eSIM rather than carrier roaming.

Rebtel is the strongest choice when the person you call has a regular phone rather than an app. Its India page lists three ways to pay: India Unlimited at $14 for 30 days, $30 for 90 days or $55 for 180 days; Global Unlimited at $14 per month for India and 46 other countries; and pay-as-you-go Rebtel Credits at 2.94¢ per minute to mobiles and landlines. Unlimited plans start with a one-week free trial and can be canceled anytime. Rebtel says it connects calls over local landlines, so no data or Wi-Fi is needed, which helps when your connection is weak or you are roaming. Calls and messages to other Rebtel users are free. The trade-off is that unlimited deals apply to a fixed country list, and occasional callers may find credits on Google Voice cheaper for Western Europe. Rebtel's site also lets you switch prices between USD, GBP, AUD, PLN and EUR.

Google Voice has the lowest verified per-minute prices on this list for common Western destinations. Its rate table, published in US dollars, lists UK, Mexico and German landlines at $0.01 per minute and Canada at $0.00, while Google's help center says calls from the US to almost all of the US and Canada are free. You pay for international calls with prepaid credit, capped at a $70.00 balance, and you can set auto-recharge to add $10, $25 or $50 when the balance drops below $2.00. The catches are practical. Credit can only be bought on the web at voice.google.com, not inside the app. Mobile numbers often cost far more than landlines, with Algerian mobiles listed at $0.62 per minute and China at $0.30, so check the exact rate first. Business users on Voice Starter or Standard standalone plans are billed on an invoice instead and cannot buy credit.

BOSS Revolution is a long-running calling service from IDT Corporation, and its published US rate table makes it easy to compare. App rates include Mexico at 1.9¢, the UK at 2¢, India at 3.3¢ and Nigeria at 12¢ per minute, and new accounts get $2 of free credit. You can stay on pay as you go or choose one-time, subscription and combo plans, and the Savings Pass takes 20% off standard international rates for frequent callers. App-to-app calls over Wi-Fi are free, which helps when both sides have the app. The company says it connects over 11.3 billion minutes every year and has telecom hubs on three continents. Rates vary sharply by country, though: Haiti costs 26¢ per minute and Cuba is far higher than most of Latin America, so look up your destination first. The site also promotes money transfer and mobile top-up, which some users will find distracting.

Viber combines the two kinds of calling on this list in one app. Calls between Viber users are free, with group voice and video calls, and chats stay synced between phone and desktop so you can move a call to your computer with one tap. For people who are not on Viber, Viber Out calls any landline or mobile number with no commitment and no connection fee. You can buy prepaid credit or a monthly plan, including a World subscription with unlimited minutes and a one-week free trial, though trials are limited to one per customer and unlimited plans exclude special, premium and non-geographic numbers under a fair usage policy. We could not confirm US dollar prices: Viber's calling card pages showed euros from our location, so check the price in the app before you buy. Viber offers desktop apps for Windows, Mac and Linux, which is wider than most rivals here.

Signal is the privacy pick for international app calls. Its site promises voice and video calls to people across town or across the ocean with no long-distance charges, and every call is end-to-end encrypted with the open source Signal Protocol. Signal states that it cannot read your messages or listen to your calls. The service is run by an independent 501c3 nonprofit, funded by grants and donations, and shows no ads and runs no tracking. Apps cover Android, iPhone and iPad plus Windows, Mac and Linux desktops. The limits are the same as any app-only service: it reaches only people who install Signal, and it has no way to call a landline or regular mobile number. In practice, fewer relatives abroad are likely to have Signal than WhatsApp, so it works best for contacts who already care about privacy.

Telegram earns its place for free calls to large groups. Its FAQ says you can make end-to-end encrypted voice and video calls and turn any call into a group call with up to 200 participants, also protected by end-to-end encryption. That is far more than WhatsApp's 32-person limit, which helps for a community or extended family spread across countries. Telegram describes itself as fast, simple and free, and your messages stay in sync across any number of phones, tablets and computers, so you can start a call on whichever device is closest. Groups and channels also support voice chats and live streams. As with WhatsApp and Signal, Telegram only calls other Telegram users and has no way to dial a landline or ordinary mobile number. Its FAQ also explains that regular cloud chats use client-server encryption, with end-to-end encryption reserved for calls and Secret Chats.

TextNow is a US phone service best known for a free number, and its international calling is simpler than most. You add credits in the app with no monthly add-on, bundle or minimum, and TextNow says credits do not expire. Rates cover 230+ countries and destinations and are shown before you dial: calls to Mexico and the UK are listed as free, India starts at $0.01 per minute, and China starts at $2 per minute, so the spread is wide. Every TextNow plan includes unlimited calls across the US and Canada, and you can roam in Mexico on any plan, including Free. The main limit is that the service is built around a US number, so it suits people living in the US or Canada who call abroad rather than travelers who need a local number elsewhere. A few countries are excluded, so check the rate list before relying on it.

Yolla is a straightforward prepaid calling app for iOS and Android that reaches mobiles and landlines in 190+ countries. Its rates page says calls start at $0.04 per minute, Yolla-to-Yolla calls are always free, and international texts cost $0.15 per message. Yolla says buying credit on yollacalls.com with PayPal or a bank card saves up to 20%, and inviting friends can earn up to $50 in free credits. You can also place web calls from a computer, which helps when your phone is busy or low on battery. The site highlights Nigeria, Eritrea, Kenya, Ghana, Tanzania and Jamaica as top destinations, which points to its main audience. The weak spot is price: $0.04 per minute is the lowest rate it advertises, while Google Voice, BOSS Revolution and TextNow list cheaper rates to several popular countries, and Yolla's exact rate depends on the country you call from.