Side by side
RxDB vs sql.js
Both stand on embedded databases. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidAPIiPhone+5
RxDB combines local storage, synchronization, and reactive queries for JavaScript applications. Its free tier has a collection limit, while paid tiers add storage and other capabilities.
Visit RxDB Free plan APISelf-hostedWeb
sql.js provides SQLite functionality in JavaScript with browser and Node.js distribution options. Its in-memory design and partial BigInt support are important constraints to consider for an application.
Visit sql.jsThe facts
| RxDB | sql.js | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android, API, iPhone, Linux, Mac, Self-hosted, Web, Windows | API, Self-hosted, Web |
| Lowest paid plan | Pro: $99 a month | Free or on request |
| Plans published | 4 | 1 |
| Maker | Not published | Not published |
| Website | rxdb.info | sql.js.org |
| On embedded databases | #19 of 30 | #23 of 30 |
RxDB: what it does well
- Supports offline operation, including without a backend.
- Realtime queries respond to stored-data changes.
- Schema validation and migration support.
- Local document encryption works across several runtimes.
What to know first
- Free tier allows up to 13 open collections.
- Free users receive community support.
- Pro starts at $99 a month billed annually.
sql.js: what it does well
- Imports existing SQLite files.
- Exports databases as JavaScript typed arrays.
- Supports prepared statements and custom SQL functions.
- Web Worker build can move intensive queries off the main thread.
- Free and MIT licensed.
What to know first
- Changes are not persisted automatically.
- Large databases can run out of memory.
- Web Worker API is more limited.
- BigInt values cannot be bound.