Side by side
imo vs Viber
Both stand on voip calling apps. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidiPhoneMac+2
imo combines messaging, internet calls and large-group features across several platforms at no charge. Its stated collection of message content and mixed encryption coverage are important privacy considerations.
Visit imo
Free plan AndroidiPhoneLinux+2
Choose Viber for free messaging and calls with other Viber users, device syncing, and Communities that can have unlimited members. Look elsewhere if you need group chats larger than 250 people or desktop activation without an active mobile account.
Visit ViberThe facts
| imo | Viber | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android, iPhone, Mac, Web, Windows | Android, iPhone, Linux, Mac, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 3 |
| Maker | Not published | Not published |
| Website | imo.im | viber.com |
| On voip calling apps | #3 of 21 | #7 of 21 |
imo: what it does well
- Free HD internet audio and video calls
- Group video calls for up to 20 people
- Big Group supports up to 5,000 members
- Stories disappear after 24 hours
- Available on Android, iOS, macOS, web and Windows
What to know first
- Carrier data charges may apply to calls
- Privacy policy says message content is collected
- Encryption coverage is mixed
Viber: what it does well
- Supports text, photo, video, file, voice, and video messages.
- Offers voice and video calls, including group calls.
- Communities allow unlimited members and admin moderation.
- Chats sync across mobile, tablet, and desktop.
- One-on-one and group chats use end-to-end encryption by default, according to Viber.
What to know first
- Desktop activation requires an active Viber account on a mobile phone.
- Group chats support up to 250 people.
- Viber Out and Viber Plus prices are shown in the app or vary by destination.