Product Updates

JavaScript/Web SDK

JavaScript Web Client SDK: v1.38.6

[IMPROVED] `AttachmentQueue` now releases the mutex per attachment, persists state incrementally, and lets `stopSync()` interrupt mid-batch, so foreground `saveFile()` and `deleteFile()` calls are no longer blocked by in-progress uploads or downloads.

June 24, 2026

Node.js SDK

Node.js Client SDK [Beta]: v0.19.2

[IMPROVED] `AttachmentQueue` now releases the mutex per attachment, persists state incrementally, and lets `stopSync()` interrupt mid-batch, so foreground `saveFile()` and `deleteFile()` calls are no longer blocked by in-progress uploads or downloads.

June 24, 2026

React Native SDK

React Native Client SDK: v1.35.7

[IMPROVED] `AttachmentQueue` now releases the mutex per attachment, persists state incrementally, and lets `stopSync()` interrupt mid-batch, so foreground `saveFile()` and `deleteFile()` calls are no longer blocked by in-progress uploads or downloads.

June 24, 2026

PowerSync Service

PowerSync Service: v1.23.0

[IMPROVED] lower() and upper() are now Unicode-aware when the unstable_sqlite_expression_engine option is enabled, matching the JavaScript evaluator instead of SQLite's ASCII-only default. This release also fixes Sync Stream parameter-query error responses for wildcard table patterns and adds table names to snapshot-pending error messages.

June 23, 2026

Swift SDK

PowerSync Swift SDK: v1.14.4

[FIXED] Running a query inside a cursor mapper callback (e.g. a nested `tx.get` inside a `tx.getAll` mapper) no longer crashes. This regressed in the 1.14.0 Swift-native rewrite.

June 22, 2026

Dart/Flutter SDK

Dart/Flutter Client SDK: v2.3.1

[IMPROVED] SQLCipher support is available again on native platforms, an alternative to SQLite3 Multiple Ciphers for encryption that can be faster, especially on Apple targets.

June 22, 2026

CLI

PowerSync CLI: v0.10.0

[IMPROVED] Commands that take --instance-id now resolve --project-id and --org-id automatically from it, so you no longer need to pass them.

June 11, 2026

PowerSync Service Convex

Announcing Convex Backend Support (Experimental)

Convex is now a supported source for PowerSync, available as an experimental release. Add offline-first behavior, optimistic updates, and partial sync to a Convex app.

June 10, 2026

Kotlin SDK

PowerSync Kotlin SDK: v1.13.0

"[BREAKING CHANGE] Aligning with Kotlin and Androidx multiplatform libraries, this release removes support for x86_64 Apple targets (iosX64(), macosX64(), tvosX64() and watchosX64()). (PR #353)

June 8, 2026

PowerSync Dashboard

Searchable Instance Logs in the PowerSync Dashboard

Until now, finding the right entries in the PowerSync Dashboard's instance logs meant scrolling the feed or using browser search. That works for the last...

May 29, 2026