Cheogram vs Delta Chat
Cheogram
cheogram.com
Delta Chat
delta.chatSide by side
| Figure | Cheogram | Delta Chat |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Secure Messaging Apps | 8.7 (#3) | 8.2 (#11) |
| Encryption | When enabled, OMEMO provides end-to-end encryption for contacts and group chats, and the FAQ says attachments and their metadata are encrypted too. | All messages are end-to-end encrypted by default, and attachments and their metadata are included in the encryption. |
| Headquarters | Kitchener, Ontario, Canada | Freiburg, Germany |
| Support | The site directs users to discussion on the web, Lemmy, or Reddit. | The site links to a Delta Chat forum for support and feedback. |
Plans
In their own words
Delta Chat
Delta Chat is a free, open-source instant messaging app for mobile and desktop, with support for self-hosting. It runs on Android, iOS, Linux, macOS and Windows, and supports multiple profiles and devices. Messages travel through secure, interoperable chatmail relays and are end-to-end encrypted by default, including attachments and their metadata. Delta Chat uses a subset of OpenPGP with Secure-Join and Autocrypt. Servers can still see sender and receiver addresses and message size; other message, contact and group metadata is encrypted. Chats can include interactive web apps for gaming and collaboration. Android and iOS audio and video calls use peer-to-peer WebRTC, but a March 2026 post said the feature was still behind a debug setting. A classic email address can act as a relay only if used exclusively by chatmail clients, and classic email providers generally do not support push notifications. The FAQ says there are no immediate plans for a web client. The project links to a forum for support and feedback.