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SPECIFICTION
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imo

imo.im

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Spec score 8.2 #10 of 43 in Encrypted Messaging Apps

What it is

imo is a communication app for internet calls and messaging, available on Android, iOS, macOS, web, and Windows. It offers HD audio and video calls, including international calls, and group video calls for up to 20 participants with no fixed time limit. Chats support real-time messages, photos, videos, voice recordings, and group conversations; its Big Group feature supports up to 5,000 members. Stories hold photos, videos, and text updates for 24 hours. Listed privacy features include end-to-end encryption, Time Machine, and disappearing messages, while account controls include two-step verification and spam blocking. Encryption coverage is mixed. Instant message translation is available, and the privacy policy says Google Translate may provide it. That policy also says imo collects usage data, including communication partners, times, and message content. On iOS, imo integrates with Siri and can access iCloud Drive for file sharing. The app is free, though mobile carrier data charges may apply to internet calls.

Spec sheet

Product
imo is an instant communication app for calls and messages.Read 5 Oct 2026 · imo.im
Platforms
imo lists Android, iOS, Windows and Mac downloads, and its FAQ also describes using imo Web in a browser.Read 5 Oct 2026 · imo.im
Integrations
The privacy policy describes iOS integration with Siri and access to iCloud Drive for sharing files.Read 5 Oct 2026 · imo.im
Support
The download FAQ directs users who need help to [email protected].Read 5 Oct 2026 · imo.im
Headquarters
Palo Alto, California, United StatesRead 28 Sep 2026 · imo.im
Account security
The homepage says imo supports two-step verification and spam blocking.Read 5 Oct 2026 · imo.im
Calls
imo offers free HD audio and video calls over the internet, including international calls.Read 5 Oct 2026 · imo.im
Data handling
imo's privacy policy says it collects usage data including whom users communicate with, communication times and message content.Read 5 Oct 2026 · imo.im
Group calls
Group video calls support up to 20 participants and have no fixed time limit.Read 5 Oct 2026 · imo.im
Large groups
imo says its Big Group feature supports groups of up to 5,000 members.Read 5 Oct 2026 · imo.im
Messaging
Chats support real-time messages, photo, video and voice-recording sharing, and group chat.Read 5 Oct 2026 · imo.im
Privacy features
The homepage lists end-to-end encryption, Time Machine and disappearing messages as privacy features.Read 5 Oct 2026 · imo.im
Stories
imo Stories let users share photos, videos and text updates that disappear after 24 hours.Read 5 Oct 2026 · imo.im
Translation
imo offers instant message translation, and its privacy policy says translation may be provided by Google Translate.Read 5 Oct 2026 · imo.im
Usage limitation
Internet calls are free, but mobile carrier data charges may apply.Read 5 Oct 2026 · imo.im

Plans and prices

imo Free Free calls and messages; carrier data charges may apply Read 5 Oct 2026 · imo.im

Every imo plan and price →

Strong points and limits

Strong points

  • Group video calls allow up to 20 participants.
  • Big Group supports up to 5,000 members.
  • Stories disappear after 24 hours.
  • Available on Android, iOS, macOS, web, and Windows.

Limits

  • Carrier data charges may apply to internet calls.
  • Privacy policy says message content is collected.
  • Encryption coverage is mixed.

Who it suits

imo suits people seeking free internet calls and messaging across mobile, desktop, and web platforms. Its large-group feature may suit users who need group chats with many members.

Verdict

imo combines free internet calls and messaging with support for large groups and several platforms. Readers should weigh its stated data collection and mixed encryption coverage alongside those features.

Where Specifiction places it

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