Overview: Three Giants of Internet Calling
When it comes to making calls over the internet, WhatsApp, Skype, and Google Voice are among the most recognized names. But they serve different purposes, and choosing the wrong one can mean paying too much — or missing features you actually need.
Quick Comparison Table
| Feature | Skype | Google Voice | |
|---|---|---|---|
| Free app-to-app calls | ✅ Yes | ✅ Yes | ✅ Yes |
| Real phone number included | ❌ No | ❌ No | ✅ Yes (US only) |
| Call landlines/mobiles | ❌ No | ✅ Paid credits | ✅ Free (US domestic) |
| Video calling | ✅ Yes | ✅ Yes | ❌ No |
| Group calls | ✅ Up to 32 | ✅ Up to 100 | ❌ Limited |
| End-to-end encryption | ✅ Always on | ⚠️ Partial | ❌ Not E2E |
| Desktop app | ✅ Yes | ✅ Yes | ✅ Web-based |
| Best for | Personal/global | International calls | US-based users |
WhatsApp: Best for Staying Connected Globally
WhatsApp is the world's most widely used messaging and calling app with massive adoption across Latin America, Europe, India, and Africa. Its biggest advantage is that voice and video calls are completely free between WhatsApp users — anywhere in the world — using Wi-Fi or mobile data.
Pros:
- Enormous user base — your contacts likely already have it
- End-to-end encryption by default for all calls and messages
- Works well on low-bandwidth connections
- Completely free for app-to-app use
Cons:
- Cannot call regular phone numbers (landlines or mobiles not on WhatsApp)
- Requires a phone number to register
- Owned by Meta — privacy-conscious users may prefer alternatives
Skype: Best for Calling Real Phone Numbers Abroad
Skype pioneered internet calling and remains a solid choice — particularly if you need to call regular phone numbers internationally. Skype-to-Skype calls are free, and Skype Credits or subscriptions let you call landlines and mobiles at competitive per-minute rates.
Pros:
- Can call any landline or mobile number worldwide
- Reasonable international calling rates
- Good for large group video calls (up to 100 participants)
- Available on virtually every platform
Cons:
- Calling real phone numbers costs money (credits required)
- Encryption is not end-to-end for all call types
- Interface feels dated compared to newer apps
Google Voice: Best for US-Based Users Wanting a Free Number
Google Voice stands out by providing a free US phone number that you can use to make and receive calls via the internet. It's tightly integrated with other Google services and is particularly useful for people who want a separate number without paying for a second phone plan.
Pros:
- Free US phone number included
- Free domestic calls and texts within the US
- Works on any device — phone, tablet, or browser
- Easy voicemail transcription
Cons:
- Only available to users with a US Google account
- No video calling
- Not ideal for non-US international calling needs
The Verdict
Choose WhatsApp if your contacts are already on it and you primarily need free person-to-person calls and messaging. Choose Skype if you need to call regular phone numbers abroad at low rates. Choose Google Voice if you're US-based and want a free phone number with domestic calling baked in. Many users end up using two or more of these apps depending on who they're calling.