Delta Chat APK
App information
Version 1.50.5 (#708)
Updated 2025-01-25
APK Size 54.5 MB
Requires Android Android 5.0+ (Lollipop)
Offered by merlinux GmbH
Category Free Communication App
App id chat.delta
Developer's notes Use your regular email for instant messaging.
Screenshot
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Table of contents
Latest updates
What's new in Delta Chat 1.50.5
* If you cannot scan QR codes, share them as "invite links"
* Unread messages of all accounts are counted and shown in title now
* Webxdc sending limit removed
* Long-tapping chatlist items now allow to mute/unmute chats directly
* Ask for system unlock secret before opening "Password & Account"
* New option "Settings / Advanced / Read System Address Book"
* Tons of bug fixes
Editor's review
Download the latest Delta Chat application, version 1.50.5, compatible with Windows 10/11 (using emulators such as Bluestacks), Android devices. This free Communication app is developed by merlinux GmbH and is easy to download and install.
Previous versions, including 1.50.5, 1.50.3, 1.48.3, 1.46.14, 1.46.7, 1.46.5, are also available. If you need help or have any problems, please let us know.
Description
Technically, Delta Chat is an e-mail application but with a modern chat interface. E-Mail in a new dress if you will. Chat and contact data remain on your devices. No uploads of addressbook, calendar or other personal data. There simply are no Delta Chat servers where anything could be uploaded to.
Use Delta Chat with anyone out of billions of people: just use their e-mail address. Recipients will see a simple e-mail and may directly reply with their own e-mail app. They don't need to install Delta Chat, visit websites or sign up anywhere. If you send a picture or other media to a chat group your chat recipients will see a nice regular e-mail with an attachment. If they send a message and attachments back, you will see the media in your chat for this contact.
Delta Chat sends e-mails using your e-mail account and provider of choice. You can change mobile numbers without any trouble or even work without any SIM card or phone number at all. You can export all your chat data on one device, import it on a new device and happily continue chatting. Not requiring mobile numbers avoids cell-tower and other tracking.
Delta Chat establishes end-to-end encryption automatically when chat partners start communicating with each other. On a two-people chat, just send a "Hi!" message and already receive an encrypted reply if the other side accepts you as contact. End-to-End encryption not only works between Delta Chat apps, but also with other e-mail apps if they support the Autocrypt Level 1 encryption standard.
Moreover, Delta Chat offers an experimental "verified group" chat guaranteeing end-to-end encryption to be secure against active network or provider attacks. This unique feature is based on recent usability and cryptographic research and is going to be refined after further user-testing with at-risk users in 2019.
Delta Chat offers instant chatting and synchronization across devices. Messages sent on one device will quickly show up on other devices. There is an early iPhone version and mostly stable downloads for Linux, Mac OS Laptops and an experimental Windows download. All Desktop versions can be used standalone or in conjunction with a mobile version.
Delta Chat is a relatively young project, but already has a lot to offer. It employs a pragmatic and usability-driven approach to decentralized messaging. No re-inventing of wheels unless one of them causes actual trouble or concern. We rather often think about removing technology than adding yet more of it, trying to keep things maintainable and understandable for us and others. Most popular programming languages and many human languages are involved in the development of Delta Chat apps and the various activities around it.
We are grateful for any help, be it contributing good bug reports, helping other users on the forum, participating in our open development with PRs and reviews, translations to more languages, working on new bots, setting up new experimental mail servers ... or a donation if you can.
We currently use monetary donations to help contributors join us at our repeated one-week long gatherings -- where we develop and user-test with locals and evolve new directions and plans.
App permissions
Delta Chat 1.50.5 APK requires following permissions:
Allows an application to read the user's contacts data.
Required to be able to access the camera device.
Allows an app to access approximate location.
Allows an app to access precise location.
Allows an application to record audio.
Allows an application to modify global audio settings.
Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.
Allows access to the vibrator.
Allows applications to access information about networks.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows applications to open network sockets.
Allows an application to install a shortcut in Launcher.
Allows applications to access information about Wi-Fi networks.
Permission an application must hold in order to use ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS.
Allows an application to request installing packages.
Ratings and Reviews
Rating: 4.3/5 based on 1K+ reviews
(*) is required
5 ★ Great idea and glance app, but please solve follow problem: location service staying on even after make off streaming location
3 ★ Nice idea, but not yet mature enough. 1. Complex to authenticate user for email accounts other than google. Even with google, it could be complicated if a customer have 2WV. 2. Calls and Vedio calls. But that's ok for now.
4 ★ All good, but always problems with the notifications. No matter how it is setup in the notification settings, message alerts are hit or miss.
4 ★ Good one. It'll be so great if they add status feature also like whtsapp then It'll be easy for many of users to switch from that one to this one. Overall good and app user friendly.
5 ★ Update, you clearly said initial few messages could be not encrypted. My mistake. 5 star. Here is why I am still concerned about private while using this app. In DeltaChat: The “MY ORIGINAL MESSAGE” message you sent was displayed on the screen of the recipient. This is no guarantee the content was read. Perhaps it should be "“Encrypted message” everywhere? And I can see some EMAILs with original message (not encrypted) in the header section. e.g. "Chat: SOME MESSAGE.". I am sure it is a small bug and will be fixed soon.
3 ★ Am missing messages halfway thru a chat. Friend kept having error message on his side saying my mailbox is unavailable. Am using Gmail.
5 ★ Love the idea! An easy implementation for voice calls would make this app complete mindblowing.
5 ★ Great app! Looks and works as other Messengers - but without an extra server or central control. Instead, use the email provider of your choice :) So, you need your email crefentials to log in (and a nice provider :)
1 ★ Couldn't connect to my Gmail account at all, failed in initial configuration.
1 ★ Unable to use my outlook email address! I suppose only a gmail address is acceptable?
5 ★ Very nice app. Love decentralised servers. We are the network, no need for intermediaries.
5 ★ A very well executed concept only thing needed is imap server.👌👌👌👌
3 ★ Wait...... if there is no Delta server but all kept in your device, will that take up alot of space in your device Memory?
5 ★ Good email messanger with a better display
5 ★ The only chat app I can trust. Thank you for the excellent job and the brilliant idea
Previous versions
Delta Chat 1.50.5 APK for Windows (#708, 54.5 MB)
Delta Chat 1.50.3 APK for Windows (#706, 54.5 MB)
Delta Chat 1.48.3 APK for Windows (#701, 57.3 MB)
Delta Chat 1.46.14 APK for Windows (#696, 59.3 MB)
