iO App




    Communicate for free using a single app. Phone, chat, send pictures or videos and much more. Make free unlimited phone calls to the Swiss fixed and mobile network – even from abroad. Your privacy is protected, thanks to secure data storage on Swisscom servers in Switzerland.

    A single app for all your communications:
    - Free phoning and texting to other iO users
    - Unlimited chatting with other iO users
    - Invite up to 100 friends to a group chat
    - Sharing of pictures, videos, locations, contacts and more with other iO users

    Make «iO Out» calls free of charge:
    - Call practically any number in Switzerland, Europe, Canada or the United States *
    - Texting to all of your worldwide contacts who don’t yet have iO *

    Call Switzerland free of charge:
    - Unlimited phone calls to the Swiss fixed and mobile network – even from abroad *

    Protect your privacy:
    - No use is made of your personal address book
    - Communication is secure and encrypted
    - All sensitive data remain in Switzerland

    - To use iO, you need to have an Internet connection via WLAN or a mobile data network (3G/LTE).
    - The Internet connection is not included and usage may incur additional costs.
    - An Internet connection via a mobile data network (2G/3G) may result in impaired voice quality, especially at train stations, on trains or in cars.

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    *) Free for Swisscom Natel infinity & Natel light (flat rate Switzerland only) customers only

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    Users review

    from 7.373 reviews



    Users comments

    A Google user

    by A Google user

    Jul 11, 2017  |  "Awesome"

    I'll try this

    Beleto Senpai

    by Beleto Senpai

    Jun 16, 2017  |  "Awesome"

    I love it

    Erth Sandoval

    by Erth Sandoval

    Jun 16, 2017  |  "Awesome"

    It is super! I don't get spam.

    Eatacookie Twiceaday

    by Eatacookie Twiceaday

    Jun 15, 2017  |  "Awesome"

    Excellent App. Far better than whatsapp

    rizwan khan

    by rizwan khan

    Jun 14, 2017  |  "Awesome"

    Amazing voice n video calls

    Baaa Ri

    by Baaa Ri

    Jun 13, 2017  |  "Awesome"

    Its a greate app very help full thanku swisscom