Viber is a messaging app first. PhoneTheWorld is built for international calling. See how they compare for reaching landlines and mobiles worldwide.
Viber is primarily a messaging and chat app. Free calls only work between Viber users who both have the app installed. To call actual phone numbers (landlines or mobiles), you need Viber Out credits, which have different rates and require the app. PhoneTheWorld is purpose-built for calling any phone number in 195+ countries — no app, no recipient requirements.
| Feature | PhoneTheWorld | Viber |
|---|---|---|
| Call Any Phone Number | Yes — any landline or mobile | Only Viber Out credits call phones |
| Free Calls Between Users | Not applicable — all calls go to real phones | Free only if both have Viber app |
| Recipient App Required | No — recipient needs nothing | Yes for free calls — both need Viber |
| Feature | PhoneTheWorld | Viber |
|---|---|---|
| App Download Required | No — browser only | Yes — Viber app required |
| Account Setup | Email signup | Phone number verification required |
| Desktop Calling | Any browser on any OS | Desktop app available but separate |
| Feature | PhoneTheWorld | Viber |
|---|---|---|
| Pay-As-You-Go | Yes — credits never expire | Viber Out credits expire after 6 months |
| Monthly Subscription | No subscription needed | Viber Out plans available |
| International Rates | From 2¢/min (USA landline) | Viber Out rates vary by country |
| Feature | PhoneTheWorld | Viber |
|---|---|---|
| Data Collection | Minimal — no chat data mining | Messaging data collected (Rakuten-owned) |
| Messaging & Chat | Voice calls only | Full messaging platform |
| Stickers & Media | Not included | Stickers, media sharing, group chats |
Check our real rates for top international calling destinations.
Viber free calls only work app-to-app. PhoneTheWorld calls any landline or mobile in 195+ countries.
Viber requires an app install and phone verification. PhoneTheWorld runs in any browser.
Viber Out credits expire after 6 months. PhoneTheWorld credits are yours forever.
Only with Viber Out credits. Viber free calls only work between two Viber app users. To call a regular phone number (landline or mobile), you must purchase Viber Out credits or a Viber Out subscription. PhoneTheWorld calls any phone number directly — no recipient app needed.
Yes. Viber Out credits typically expire after 6 months of inactivity. PhoneTheWorld credits never expire — you buy once and use them whenever you need, with no time pressure or wasted money.
No. PhoneTheWorld works entirely in your browser using WebRTC. Viber requires downloading and installing the Viber app on your device, plus verifying your phone number. With PhoneTheWorld, you just sign up with an email and start calling from any browser.
If your family members have Viber installed and you both have good internet, Viber free calls work fine. But if you are calling a landline, a relative who does not have a smartphone, or someone without Viber, PhoneTheWorld is the better choice. You can call any phone number in 195+ countries without the recipient needing any app.