Authentication via messengers instead of SMS

Instant 2FA authorization via Telegram, WhatsApp, Viber, MAX and others and a cost-effective solution for your website or application.

*100 free test authorizations after registration.

Authentication in 6 seconds

Logging into an account becomes instant and easy for users. You no longer need to wait for an SMS message with a code to be delivered; authorization via Telegram, WhatsApp or Viber is just one click away.

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Reliability and safety

Your safety is our priority. Instant 2FA offers a high level of security and reliability, making it an ideal solution for protecting your users' data and accounts.

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Global availability and support for ALL languages in the world

Our product is available for use around the world, providing easy integration with any website or mobile app. And the authorization will be in a language that your client understands.

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Forget the hassle of SMS authorization and switch to instant authorization via messengers today

Get 100 authorizations for free

Supported messengers

Authentication works through the most popular messengers

Telegram

WhatsApp

Viber

MAX

Your messenger

We will add it on request — write to us

How does this work?

01

Entering a phone number for authorization

The user enters their phone number on the login page and clicks the “continue” button.

02

Getting the code and choosing a messenger

After entering the phone number, the user receives a unique 6-digit code on the same login page and selects the messenger in which they are registered.

03

Entering the verification code

The user logs into the messenger and enters the received code. After entering the code, he can return to the site or application, where he will already be logged in.

We work all over the world

Authentication in your customers' language

Messenger messages are automatically sent in the language of the user's country. We support more than 50 languages — your service is ready to be launched anywhere in the world.

English Русский Español Français Deutsch Português Italiano Nederlands العربية 中文 日本語 한국어 हिन्दी Türkçe Polski Українська Қазақша English Русский Español Français Deutsch Português Italiano Nederlands العربية 中文 日本語 한국어 हिन्दी Türkçe Polski Українська Қазақша
Беларуская Български Hrvatski Čeština Slovenčina Slovenščina Српски Bosanski Македонски Lietuvių Latviešu Eesti Svenska Norsk Dansk Íslenska Føroyskt Беларуская Български Hrvatski Čeština Slovenčina Slovenščina Српски Bosanski Македонски Lietuvių Latviešu Eesti Svenska Norsk Dansk Íslenska Føroyskt
Suomi Română Català Afrikaans ไทย Tiếng Việt Bahasa Indonesia Bahasa Melayu Tagalog தமிழ் አማርኛ Azərbaycanca සිංහල বাংলা اردو فارسی Suomi Română Català Afrikaans ไทย Tiếng Việt Bahasa Indonesia Bahasa Melayu Tagalog தமிழ் አማርኛ Azərbaycanca සිංහල বাংলা اردو فارسی

The language is automatically determined by phone number — the user receives clear instructions without additional settings on your part.

Solutions and benefits

Safety at a new level

Authentication via messengers is more reliable than classic SMS-2FA, which minimizes the risk of hacking.

Savings on tariffs

We offer a single rate all over the world, helping you save on SMS authorization costs.

Easy to integrate

Our solution is easier to integrate, so it reduces technical complexity and development costs.

User friendliness

Authentication via messengers is more convenient for users and reduces the risk of losing an audience.

Worldwide availability

Auth4App works wherever messengers are available, providing global reach.

Independence from operators

Authentication via messengers works independently of mobile operators, reducing the risk of delivery problems.

Cost comparison

How much do you overpay for SMS authorization?

At 10,000 logins per month, the difference is immediately noticeable: SMS costs increase per shipment, while Auth4App counts only successful authorizations.

If you use SMS

10,000 SMS per month

Average price per SMS $0.04 - $0.08
Budget for 10,000 shipments $410 - $820
Total expenses per month
$410 - $820

Pay for every SMS sent, even if the code didn't arrive, was delayed, or the user requested it again.

If you use Auth4App

10,000 authorizations

Only count Successful logins
The cost of 10,000 authorizations $140
Your monthly expenses
$140

If a customer doesn't sign in or doesn't receive a code, you don't pay for failed authorization.

Savings on the same amount

67-83%

Even without repeated SMS requests, the cost of authorization via messengers is significantly lower in the first month of use.

What happens when every second user requests the code again?

Then instead of 10,000 SMS, you need to send 15,000 messages. The budget for SMS authorization increases to $610 - $1 200, and the cost through Auth4App remains tied only to the number of successful entries.

89%
savings in the scenario of sending SMS again

The cost of authorization via messengers

Popular
Easy start

Free

Get 100 authorizations
  • 100 free authorizations
  • Telegram, WhatsApp, Viber, MAX
  • Multilingualism
  • High level of protection
  • Available to customers from all countries
Successful authorization

$0.01 / authorization

Register
  • Pay only for successful authorizations
  • Telegram, WhatsApp, Viber, MAX
  • Multilingualism
  • High level of protection
  • Available to customers from all countries

Stop waiting for an SMS

Make it easy for your users to sign in and start saving money with instant login via Telegram, WhatsApp, and Viber.