A stranger could pick the display name of an existing contact ("Mom")
and appear as that contact. Messages from a key that is not in the
contact list now open a message request labelled "(unknown)": no
replies, read receipts, typing indicators, calls or name in
notifications until the user accepts it and names the contact
themselves. Names that look like an existing contact (case, diacritics,
Cyrillic/Greek homoglyphs, invisible characters) also show a warning in
the real contact's chat.
When the relay account of a known contact shows up with a different
key, the chat shows "safety number changed", verification is cleared
and the session that now belongs to the other key is dropped before
sending, so a reply never goes to the new key.
Messages arriving while a conversation was open were never marked as read,
so the chat list kept showing them as unread after going back. The screen
now marks incoming messages read while it is on top and the app is in the
foreground, again when the app returns to the foreground, and on leaving.
Read state is now monotonic in Conversation.updateMessage, so a stale copy
of a message (attachment download, delayed resend) can no longer flip it
back to unread.
Also create the swipe-to-reply animation controller lazily instead of in
dispose().
A new look across the app and a set of everyday messaging features.
Interface
- Home screen with Chats, Contacts and Settings tabs, a large title,
search across chats and message text (diacritics-insensitive), filters
and pinned chats.
- Conversation view with a translucent header and composer, grouped
bubbles, author avatars and colours in groups, swipe to reply, an
"N new messages" marker, a jump-to-latest button and in-chat search.
- Contact and group profiles: verification, shared photos, groups in
common, disappearing messages, mute, block; members, admin badges,
adding people, rename and leave for groups.
- Full-screen photo viewer that pages through the whole conversation.
- A stable avatar colour per person and a clearly visible read state.
Messaging
- Polls in chats and groups, single or multiple choice, with votes that
can be changed or withdrawn; older clients see them as text.
- Drafts survive leaving a chat and show in the chat list.
- Forwarding of messages, photos, files and voice messages.
- Notes to self: a local-only, encrypted chat that never reaches the
relay.
- @mentions in groups that notify even when the group is muted.
- Typing indicators sent as ephemeral messages, opt-in and mutual like
read receipts.
- Delivery and read times per message and per group member.
- Profile photos, cropped, resized and stripped of metadata, delivered
encrypted to contacts.
- Voice message playback at 1.5x and 2x.
- Call buttons in 1:1 chats and call log entries.
Fixes
- Muted groups no longer notify: muting was checked against the
author's chat instead of the group.
- A blocked contact could unblock itself by changing its delivery
address.
- Read receipts no longer regress to delivered when a late delivery
receipt arrives.
- A message marked as failed corrects itself once it is delivered.
- Double ticks in groups now mean delivered to every member.
Settings crashed with a TypeError: the profile card passed a
SepotFingerprint object where the localized string formatter expects
a String (hidden behind a `dynamic` parameter). Also fixes RangeError
in avatar initials (empty names, double spaces) and switches initials
to grapheme clusters so emoji don't get split.
New photo preview screen: a captured or picked photo no longer sends
immediately — it opens in a preview with freehand drawing (7 colours,
undo), draggable text overlay, 90° rotation and a caption field.
Nothing leaves the device until Send is tapped.
Incoming-content hardening: decryption and content processing are now
separated in the delivery path. Once an envelope is decrypted the
ratchet has advanced, so redelivery can never help — permanently
malformed content (FormatException/TypeError) is acked and dropped
instead of poisoning the queue on every reconnect. Attachment metadata
now validates base64 of the crypto fields up front, and a corrupt
inline thumbnail no longer breaks bubble rendering.
PNG without real transparency (screenshots, edited photos) is now
re-encoded as JPEG — several times smaller on the wire.
Tests: 116 (new widget tests for Settings and the photo preview,
AttachmentMeta wire validation).
Initial public release. Anonymous on-device identity (no phone number,
e-mail, or password), Signal-protocol cryptography (X3DH + PQXDH, Double
Ratchet, sealed sender) via libsignal, a metadata-minimizing relay,
group chats, disappearing messages, encrypted local storage, optional
Tor transport, and a UI localized into Czech, English, German, Russian,
and Italian.
Monorepo: Flutter client (app/), Rust relay + wire types (rust/),
protobuf definitions (proto/), self-host deploy (deploy/).
Licensed under AGPL-3.0 with an app-store distribution exception (§7).
Julius Joska