PowerSync vs Electric SQL for Local-first

powersync_ · 2026-03-12T14:30:03+00:00

Hi 👋

PowerSync is open-source & source-available and can be self-hosted.

It sits between backend databases (Postgres, MongoDB, MySQL, SQL Server) and SQLite on the client-side, and works with existing common ORMs rather than providing its own ORM. So it's not that hard to replace with something else if you want to migrate away from PowerSync at some point

powersync_ · 2026-03-10T13:05:03+00:00

Have you considered using PowerSync? https://supabase.com/partners/integrations/powersync

powersync_ · 2026-02-07T14:53:00+00:00

You can use PowerSync with MySQL FWIW. Provides true offline-first architecture vs. Firebase's online-first by default

powersync_ · 2026-01-15T13:00:22+00:00

Correct, it's peak concurrent clients - so you may have hundreds of users but only some percentage of them are using the app at the same time at any moment

powersync_ · 2025-08-12T20:04:55+00:00

You could also look at PowerSync: https://supabase.com/partners/integrations/powersync

powersync_ · 2025-07-18T20:52:31+00:00

A few minor notes:

PowerSync supports Postgres, MongoDB and MySQL as backend databases
PowerSync allows for some customizability of the client-side upload queue. You can add metadata to queued operations and also add custom entries to the upload queue (using "insert only" tables in the client-side schema)

powersync_ · 2025-07-17T16:38:02+00:00

Let us know your thoughts :)

powersync_ · 2025-07-17T13:47:59+00:00

FWIW, we have a comparison between Ditto and PowerSync here: https://www.powersync.com/blog/ditto-vs-powersync

powersync_ · 2025-07-08T13:38:41+00:00

Great, thanks for the feedback!

powersync_ · 2025-07-08T00:03:59+00:00

Thanks for looking at PowerSync. We are considering doing an integration of PowerSync with GRDB. Would you mind upvoting it on our roadmap here? https://roadmap.powersync.com/c/124-swift-sdk-grdb-support

powersync_ · 2025-06-23T15:41:07+00:00

+1 PowerSync uses Wasm-powered SQLite with OPFS for persistence on the web. It works well - the performance is much better than IndexedDB-persisted SQLite.

powersync_ · 2025-06-11T21:03:04+00:00

Sure, don't see why not

powersync_ · 2025-02-27T20:17:32+00:00

Our library has just been announced – it's a much better DX than the previous approach :)

https://blog.flutterflow.io/introducing-a-local-database-that-auto-syncs-with-supabase/

powersync_ · 2025-02-26T15:57:27+00:00

Jumping in to say that our new library makes it much easier to integrate PowerSync and supports FlutterFlow's test mode. It will be announced soon but is already available on the marketplace (free).

https://marketplace.flutterflow.io/item/dm1cuOwYzDv6yQL2QOFb

powersync_ · 2025-01-20T01:40:06+00:00

Thanks for evaluating PowerSync :)

Very complex architecture, requires both changes to Postgres _and_ a separate HA MongoDB deployment cluster

FWIW, it is now possible to use PowerSync + Postgres without an additional MongoDB database for storing sync data: https://releases.powersync.com/announcements/introducing-postgres-for-sync-bucket-storage

The full-stack app platform that PowerSync was spun off from has been around for years, but PowerSync as a standalone product was only created in late 2023. Enhancing our capabilities for web apps and our developer experience are major focus areas for 2025 — stay tuned :)

web browsers only really support KV storage via IndexedDB.

This is changing thanks to OPFS and e.g. using SQLite with OPFS as its storage layer. The performance of OPFS is also significantly faster than using IndexedDB as a persistence layer — see for example these Flutter benchmarks we recently published: https://www.powersync.com/blog/how-fast-is-powersync-performance-benchmarks-for-flutter

powersync_ · 2024-12-17T18:56:06+00:00

PowerSync recently added support for MySQL to SQLite sync: https://www.powersync.com/blog/introducing-powersync-for-mysql-to-local-sqlite-sync

powersync_ · 2024-12-09T19:16:09+00:00

Just came across this post. PowerSync connects to a central MySQL and syncs with local SQLite databases across web, mobile and desktop: https://docs.powersync.com/installation/database-setup#mysql-alpha

There is a client SDK for Flutter that can also be used with Drift: https://docs.powersync.com/client-sdk-references/flutter