# Delta Chat — Decentral Private Messenger > Decentralized instant messenger with end-to-end encryption and flexible setup. (iPhone/iPad app by merlinux.) - Source: https://appshunter.io/ios/app/delta-chat/id1459523234 (this page in markdown: same URL + `.md`) - Developer: [merlinux](https://appshunter.io/developer/1459523233) - Category: Social Networking, Productivity - Price: Free - Rating: 4.50/5 from 121 App Store ratings · 129 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 60 MB - Languages: American English, Albanian, Arabic, Azerbaijani, Bakhtiari, Basque, Bulgarian, Catalan, Central Kurdish, Croatian and 36 more - Released: 2020-01-08 - Data updated: 2026-08-25 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/delta-chat/id1459523234/reviews.md ## What is Delta Chat? 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: • Private. Instant on-boarding without a phone number or other private data. • Friends & Family: Only chat with people you know. Unknown users cannot message or follow you without mutual consent. • Flexible. Supports multiple chat profiles and is easy to setup on multiple devices. • 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. ## Key features - Decentralized instant messaging - Private onboarding without phone number - End-to-end encryption - Multiple chat profiles - Works on multiple devices - Self-hosted option ## Recent user reviews (10 of 129) All indexed reviews: https://appshunter.io/ios/app/delta-chat/id1459523234/reviews.md ### 5/5 — fun AND secure messaging *2026-08-07, version 2.57.0* I love using Delta Chat: the ease of setting it up, the fun variety of apps that let you share notes, todo lists, games, or photo diaries with a contact or group. It’s so handy to have simple secure shared tools in this format. I’m still working on bringing over contacts though, that’s the hard part. ### 5/5 — Отличное приложение. *2026-08-04, version 2.57.0* Все работает отлично за исключением одного момента, как организовать чтобы в чат не сыпались все письма а только те кого добавил в чат сам? ### 4/5 — Seems to be good. *2026-07-22, version 2.53.0* I’ve not had time to fully test this app. I’m yet to make any kind of voice or video call. But so far, the app seems very stable and easy to use. No data collection is also important. No KYC either. Time will tell, but so far, so good. Thanks Dev. Good work, and a great idea to use the totally insecure email system to make a totally secure messenger. The only problem would be the keylogger built into the Apple keyboard. Any way around that? ### 1/5 — Doesn’t work *2026-07-15, version 2.53.0* Emails arrive to Gmail, but they didn’t arrive in delta app. ### 5/5 — la migliore soluzione *2026-06-24, version 2.53.0* complimenti! vi chiedo di fare piccoli aggiornamenti sui colori delle bolle + altri dettagli e una nuova icona app 🙏 ### 4/5 — На iPhone не работает динамик *2026-06-22, version 2.53.0* Во время звонка нет возможности изменить выход звука на громкую связь. В остальном всё отлично ### 5/5 — Safe *2026-06-07, version 2.49.2* Perfect ### 5/5 — Nice App! *2026-06-06, version 2.49.2* It’s great. It’s just missing one thing to change the playback speed of voice messages. ### 5/5 — Excellent! *2026-06-05, version 2.49.2* Hello! The app is great! But, we waiting for Liquid Glass design! Wish good luck for your team ever! Upd. Add native Face-ID unlock, please! ### 1/5 — Громкая связь *2026-06-01, version 2.49.2* Отсутствует громкая связь при звонке. В андройде можно в айфоне нет. ## Frequently asked questions about Delta Chat ### What is Delta Chat? Delta Chat is a decentralized instant messenger that prioritizes privacy and security. It allows users to chat with friends, family, and groups using end-to-end encryption. It's built on open internet standards and can be run with your own email address or server for enhanced sovereignty. ### How does Delta Chat ensure privacy? Privacy is a core feature, with instant onboarding that doesn't require a phone number or other private data. It also features audited end-to-end encryption to protect your conversations from network and server attacks. Unknown users cannot message you without mutual consent. ### Is Delta Chat free to use? Yes, Delta Chat is a Free and Open Source Software (FOSS) application. It is available for free across multiple platforms and does not have any in-app purchases or advertisements. ### Can I use Delta Chat on multiple devices? Absolutely. The app is designed to be flexible and easy to set up on multiple devices. You can also manage multiple chat profiles within the application. ### What are the benefits of a decentralized messenger? Decentralized messengers like Delta Chat offer greater user control and privacy by not relying on a single central server. This can make them more resilient to censorship and server attacks. You also have the option to run your own server for maximum control. ## Version history (last 5 releases) ### 2.57.1 — 2026-08-07 - Prefer adding relay over adding profiles when scanning QR code - Share attachments of multiple selected messages at once - Fix chat edge contrast when iOS changes the status bar color - Fix: Category labels in emoji picker not rendering correctly on iOS 26 - Fix: Incorrect content inset when "Share to x" alert is presented when sharing to Delta Chat - Fix sometimes unaligned chat subtitle - Fix onboarding page buttons - Fix status bar edge effect contrast - Fix stickers - Fix layout glitches in iOS 15 - Add Hebrew language, update translations and local help These features will roll out over the coming days. Thanks for using Delta Chat! ### 2.57.0 — 2026-07-28 - Fix relays not synced properly between recent versions from 2.56.0: - Show notifications when app is in foreground and the respective chat is not on screen - Allow voice and audio messages to continue playing in the background - Add "laughing face" to quick reaction emoji - Support LiquidGlass UI language on systems that support that These features will roll out over the coming days. Thanks for using Delta Chat! ### 2.56.0 — 2026-07-25 - Show notifications when app is in foreground and the respective chat is not on screen - Allow voice and audio messages to continue playing in the background - Support LiquidGlass UI language on systems that support that - Bug Fixes These features will roll out over the coming days. Thanks for using Delta Chat! ### 2.53.0 — 2026-06-17 - "Calls" and "Channels" are available by default and are no longer experimental - Add outgoing ringing sound and call status - Resend the last 10 messages to new broadcast channel member - Consistent outgoing image quality between images with different aspect ratio - Enable PQC (Post-Quantum Cryptography) support. We do not generate PQC keys yet, this step is needed for forward compatibility - Add "Mark All as Read" to the profile switcher context menu - Improve avatar quality - Simplified classic provider handling - Add an option to process unencrypted messages to "Advanced / Relays / Edit / More Options". By default, only encrypted messages can be sent or received - Show full message screen now uses the system font - Click on location streaming info message to open the map - Ignore blocked contacts attempting scanning your QR code - Fix: Update the channel title after joining if the QR code included a wrong title - Fix: Don't send removal message to contact that hasn't been a chat member - Fix: Reactions could go to the wrong message if a new message was received while long pressing - Fix: update relay list when modified on other devices - Fix: Tapping "Me" in reactions overview would open the wrong contact on anything other than your first profile - Fix: Video and PDF thumbnails are now cached for smoother scrolling - Fix: Do not abort IMAP connection if setting the push token fails These features will roll out over the coming days. Thanks for using Delta Chat! ### 2.52.0 — 2026-06-11 - "Calls" and "Channels" are available by default and are no longer experimental - Resend the last 10 messages to new broadcast channel member - Enable PQC (Post-Quantum Cryptography) support. We do not generate PQC keys yet, this step is needed for forward compatibility - Add "Mark All as Read" to the profile switcher context menu - Improve avatar quality - Simplified classic provider handling - Add an option to process unencrypted messages to "Advanced / Relays / Edit / More Options". By default, only encrypted messages can be sent or received - Show full message screen now uses the system font - Click on location streaming info message to open the map - Fix: Update the channel title after joining if the QR code included a wrong title - Fix: Don't send removal message to contact that hasn't been a chat member - Fix: Reactions could go to the wrong message if a new message was received while long pressing - Fix: update relay list when modified on other devices These features will roll out over the coming days. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*