Client SDKs
| Platform | Lark SDK | Firebase SDK |
|---|---|---|
| JavaScript / TypeScript | Lark JS SDK | Firebase JS SDK |
| Android (Kotlin / Java) | — | Firebase Android SDK |
| iOS / Apple (Swift) | — | Firebase iOS SDK |
| Flutter (Dart) | — | Firebase Flutter SDK |
| C++ | — | Firebase C++ SDK |
| Unity (C#) | — | Firebase Unity SDK |
REST API
The REST API works from any language or platform that can make HTTP requests — Python, Ruby, Go, Java, shell scripts, serverless functions, or anything else. It’s 100% compatible with the Firebase Realtime Database REST API.How to choose
- JavaScript / TypeScript app? The Lark SDK is the best choice. It’s smaller (~20KB), supports WebTransport for lower latency, and has built-in support for volatile paths. If you’re migrating an existing Firebase app, the Firebase JS SDK works too — just change the URL.
- Mobile or game engine? Use the Firebase SDK for your platform. Change the database URL and everything works.
- Server-side or scripting? Use the REST API. No SDK needed.