Postr does one job: compose a kind-1 note, sign it with Amber, and send it to your relays. Its durable outbox survives airplane mode, process death, and unreliable relays. Postr verifies the exact signed event by reading it back, and every retry reuses that event so it cannot create a duplicate note. Private keys stay in Amber. Postr asks only to sign kind-1 notes and file-scoped Blossom upload authorizations. It has no feed, analytics, ads, or private-key storage.
First release: Aug 23, 2026, 3 total releases.
Most recent release: Sep 14, 2026.
Appears in 1 app stack.
2,100 sats / 1 zaps received in the past year.
Sats Received
Underlying data available via MCP: app_zaps, app_releases.
Zap Count
Underlying data available via MCP: app_zaps, app_releases.
Releases
- Sep 14, 2026 1.1.1# Postr 1.1.1 This release brings dictation into the composer and makes mentions dependable anywhere in a draft. - Tap the microphone to begin dictation. The main action area becomes Cancel, Paste, and Post while speech input is active, with no separate review dialog. - Compatible Android speech services can return transcription inside Postr. The app verifies the selected provider route before starting capture and retains the provider activity as a fallback when Android cannot expose an in-app route. - Paste inserts the transcript into the captured draft position. Post uses the captured draft and transcript only after an explicit tap. - Mention search follows the caret in the middle of existing text and handles an `@` inserted immediately before an already-written username. - A selected profile mention is shown with distinct color, background, and weight. Plain text beginning with `@` keeps ordinary styling and does not become a Nostr mention.
- Sep 10, 2026 1.1.0# Postr 1.1.0 This minor release improves publishing recovery, mentions, post confirmation, relay details, and optional private feedback review. - Publishing recovery now retries the same signed event after ambiguous outcomes and protects newer or intentionally repeated drafts from stale results. - Mention suggestions show a following badge for matches from the active account’s verified contacts, and `@` insertion immediately before an already-written username is more forgiving. - Posted confirmation returns to composing after a brief foreground dwell, adjusted for Android accessibility timing; existing manual dismissal options remain. - Relay settings show cleaner URLs plus NIP-11-derived icons or initials, without changing relay selection or protocol behavior. - Private feedback review is off by default, requires separate per-account Amber decryption permission, and displays valid messages only on-device without persisting, logging, uploading, replying to, or publishing them. Ordinary Amber login remains limited to post/upload signing. This feature still needs fresh APK, GrapheneOS, and Amber runtime validation.
- Aug 23, 2026 1.0.0# Postr 1.0.0 Post. That's all. The first Postr release is a deliberately small Android Nostr composer: - Sign kind-1 notes while private-key custody stays in Amber. - Publish through a durable outbox that survives lost connectivity and process death. - Confirm publication by reading back and verifying the exact signed event. - Use advertised NIP-65 write relays or a custom encrypted relay list.
More…
- Attach files through Blossom with verified hashes and scoped authorization. - Mention people through NIP-50 search and opt in to constrained link previews. - Choose a zero-blue night theme or retint the interface with three colours. This release focuses entirely on composing and publishing. Feeds, analytics, advertising, and private-key custody remain outside Postr.