Duo Voice - Global WiFi Call 12+

International call & talk now


Designed for iPad

    • 4.6 • 597 Ratings
    • Free
    • Offers In-App Purchases



New user LIMITED offers: Get 500 credits after registration!
Duo Voice is a FREE calling app that offers international calling and quality of phone call locally and abroad. Use this Wifi calling app and enjoy free calls worldwide with any real phone number without worrying about expensive bills! Call for free and get in touch with people around the world!

(1) 100% FREE international phone call for more than 230+ countries or regions.
(2) New user bonus +500 credits. Multiple ways to earn app credits to make phone calls. 
(watch videos, complete tasks, invite friends and more.)
(3) Duo Voice uses an internet call (aka WiFi call, IP call, or VoIP call). Call your friends while you are under WiFi, 3G, 4G or 5G.
(4) Server worldwide to ensure the best voice quality.
(5) Unlike international calling cards, Duo Voice does not use your cell minutes.

- Free International Calling
Duo Voice is a 100% Completely international phone call app with no extra charge at all! Duo Voice can reach any mobile or landline number in more than 230+ countries or regions!

- Clear & Stable Voice
Duo Voice uses real telephone lines, which means we can guarantee a good crystal clear voice call quality, such as telephone calls from a landline! Duo Voice automatically detects and adjusts your connection speed to make sure more stable calls.

- Call Recording
Now it supports the call recording function, just tap the recording button during the call to record the call. one-tap recording, more convenient and faster to save important information during the call.

- Call Conference
You can hold up to 8-way calls conference with crystal-clear audio and minimal lag.

- High Quality Voice Call
Voice calls are sent to high quality Duo Voice's dedicated VOIP network so that you do not need to worry about bad reception, volatile calls or drops. Our system always finds the best telephone line (the best voice quality) in your neighboring region when you make the call.

- Earn credits
There are millions of ways to earn credits in our app, for example: daily check-in, friend invitations, watching ads, etc. To enjoy the best service calling, you simply just need a tap to earn FREE credits.

If you have any suggestions, please feel free to contact us via:
Email: duovoice@duoface.com

Privacy: https://mmcallsapp.com/privacy
Terms: https://mmcallsapp.com/terms

What’s New

Version 4.0.7

Bug fix

Thank you for using Duo Voice. If you have any questions, please contact us at duovoice@duoface.com.

Ratings and Reviews

4.6 out of 5
597 Ratings

597 Ratings

Angelina Cerezo ,


Getting a whole terabyte of storage just on the free version of the app was unbelievable to me because the storage apps before were all just so very small and they didn’t really work well for my needs so now I’m just exactly what I want and need and can’t complain about a single thing that I can recall. This IS THE ONLY FILE STORAGE APP YOU WILL EVER NEED AGAIN!!!! I SWEAR BY IT! Here is the SOLUTION TO HAVING YOUR DIGITAL MEDIA EASILY AND SIMPLY FILED TOGETHER IN ONE SINGLE PLACE, NOW THE MOST AMAZING THING, IS THE 1TB OF FREE (YES, FREE!) STORAGE SPACE!!! Hands down I have not seen another choice better than this file storage app! It’s so easy to use and it is actually really fun too, with unique functionality and features that make it a very great tool and excellent experience.

KittyCat1331 ,

Excellent service

This service has surpassed my expectations . They also give wonderful incentives such as watching a quick video, spinning a wheel, and other fun things to earn credits!

janyila. ,

Rating .

this app is very convenient for those who cannot actually make calls on their regular phones .

App Privacy

The developer, JUSI PTE.LTD., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Usage Data

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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