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Delta Chat for Android vs Signal for Android

The same facts for both, read from GitHub every night, and the relation a person reviewed.

Delta Chat for AndroidSignal for Android
LanguageJavaKotlin
LicenceGPL-3.0AGPL-3.0
Stars1.8k29k
Latestv2.62.0v8.28.4
Last push2026-10-062026-10-05
Release cadenceabout 13 days between releasestoo few releases
Active contributors15 commit authors on the default branch in the last 90 days16+ commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • Both replace WhatsApp. Alternatives to WhatsApp →

    PartialDelta Chat for AndroidEncrypted chats and groups carried over email, through any mail account or a chatmail relay.

    Full replacementSignal for AndroidEnd-to-end encrypted messages, groups and voice and video calls, run by a non-profit.