Delta Chat

4.3
2.07K reviews
500K+
Downloads
Content rating
Everyone
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About this app

Delta Chat is a reliable decentralized instant messenger that is easy and fun to use for friends, family, groups and organizations. Delta Chat is developed by a dedicated FOSS contributor community that jointly releases refinements and new features several times a year, across many stores and platforms world-wide.

Features at a glance:

• Anonymous. Instant on-boarding without a phone number, e-mail or other private data.

• Flexible. Supports multiple chat profiles and is easy to setup on multiple devices.

• Extensible. Add tools like shopping lists, calendars or gaming apps to any chat.

• Reliable. Works under bad and adversarial network conditions.

• Secure. Audited End-to-End encryption safe against network and server attacks.

• Sovereign. Can be run with your own e-mail address or server.

• FOSS. Fully Open Source/Free Software, built on Internet Standards.
Updated on
Aug 15, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
2K reviews
EJL
September 11, 2023
Would be nice to have the option to customize/change colors of receive/sent messages. So far, acquainting myself with the app. Another thing that would be helpful is to be able to short press (versus long press) on either an avatar or chat message within the main screen list and delete chats that way. Also, swipe left/right on a chat message to either call that contact; delete, mark as read (or unread) a message. Hopefully these features or at least a few of them can be implemented??
27 people found this review helpful
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Wellingtone Teka
July 26, 2025
This app is clean,easy to use,the voice notes are very clear,high picture quality,private oriented and surprisingly it does even work with as low as 2g networks incredible!,i just really love it.... The only thing missing is i can't know if the message have been delivered until its read,secondly there are no stickers and lastly lack of customisation.... All in all it's a great app, highly recommended.
3 people found this review helpful
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Yuri
December 19, 2022
Great replacement of WhatsApp by using a decentralized technology backbone that is already in place: email. However the app still need to mature in development. For example: if someone sends multiple messages after each other within a short amount of time (just like any IM some people unfortunately sends a message for every line ..) for some reason at the receivers end the messages do not appear in the correct order. can't tell if this is caused by the order of the emails receiving in the inbox
34 people found this review helpful
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What’s new

★ add "After 1 year" option to disappearing messages
★ improve image quality when setting group avatars
★ add Estonian translation, update other translations
★ allow to clone email chats
★ fix some small bugs