Free Text Messaging App vs Messenger App: What's the Difference
A free text messaging app can mean two different things: the Messages app on your phone, which sends SMS, MMS and RCS through your carrier, or an internet messenger such as WhatsApp, Telegram or Signal. They look alike on screen but deliver messages differently, cost different things and reach different people.
Here's how each works, what's actually free and which to use for what.
Two families of messaging apps
Carrier messaging apps
Google Messages, Apple's Messages and the messaging apps from phone makers handle SMS and MMS over your carrier's network. SMS reaches any mobile number, with no app or account needed on the other end. RCS, the newer standard, adds typing indicators, read receipts and better media over data or Wi-Fi when both phones and carriers support it, and drops back to SMS when they don't.
Internet messengers
WhatsApp, Telegram, Signal, Messenger and similar apps send everything over the internet. Both people need the same app and an account, often tied to a phone number. In return you get messaging at no extra cost on Wi-Fi, large groups, voice and video calls, and use on several devices.
iMessage sits in between: it lives inside Apple's Messages app but travels over the internet between Apple devices.
Side by side
| SMS and MMS | RCS | iMessage | Internet messengers | |
|---|---|---|---|---|
| Travels over | Carrier network | Data or Wi-Fi | Data or Wi-Fi | Data or Wi-Fi |
| Who you can reach | Any mobile number | Other RCS users, with SMS as fallback | Other Apple users | People on the same app |
| What you pay with | Your texting plan | Data | Data | Data |
| Account | Your SIM and number | Your number | Your Apple Account | An app account, often linked to a phone number |
| End-to-end encryption | No | Depends on the apps and carriers involved | Yes | Depends on the app; on by default in some |
What's actually free
Neither family is free in every situation. SMS and MMS draw on your plan, which may include unlimited domestic texts but often charges for international ones. RCS, iMessage and internet messengers use data, so they cost nothing extra on Wi-Fi but count toward your data allowance elsewhere, including when roaming.
In practice, the cheapest free text messaging app for a given chat is whichever one both of you already have and can use on Wi-Fi. Our guide on when texts on your phone are free walks through the plan details.
Why verification codes usually arrive by SMS
When a service checks your phone number, it usually sends a plain text, because SMS is the lowest common denominator:
- It reaches any mobile phone, with no app, account or data connection needed.
- The phone number is the thing being checked, and SMS goes to exactly that number.
- Services can send it through SMS providers to most countries.
Some services also offer the code by voice call or inside a messaging app. A code sent through a messenger lands in that app account, not in an SMS inbox. So if you're using a public number from our number list, pick the text message option when a form gives you a choice. Our SMS verify walkthrough covers the rest of the flow.
Which to use when
- Reaching someone whose apps you don't know: SMS or RCS from your phone's Messages app.
- Chatting with friends or family abroad: a messenger you both use, over Wi-Fi.
- Private conversations: a messenger that encrypts chats end to end by default.
- Weak signal but good Wi-Fi: a messenger, iMessage, RCS, or Wi-Fi calling for regular texts.
- Messages from businesses: expect SMS for codes, alerts and reminders, since that's what every phone can receive.
Free numbers available now
Click a number to open its public inbox, enter the number on the signup form, then press Update Messages on the number's page to fetch the code.
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