# TencentCloud/TIMSDK

Free Chat SDK (IM SDK) — 1,000 MAU/month free forever with push notifications & no concurrency limits. Build in-app messaging with chat API, UIKit & send message. Supports Android, iOS, Flutter, Web, React Native, uni-app, HarmonyOS & more.

Repository: https://github.com/TencentCloud/TIMSDK
Canonical: https://ross.abutalabs.com/products/timsdk
Homepage: https://trtc.io/products/chat
Language: Objective-C
License Family: other
Topics: android, chat-api, chat-sdk, chat-uikit, flutter, im-sdk, in-app-chat, instant-messaging, ios, messaging-sdk, push-notification, react-native, real-time-messaging, tencent-cloud, in-app-messaging, chat-ui-components, free-chat-api, free-chat-sdk, offline-push
Last push: 2026-07-31T11:00:40+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 95, release rhythm 8, longevity 100
- inputs: {"age_days": 2785, "days_push": 33, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2740, forks 2733 (observed 2026-08-28T04:07:16.485688+00:00)

## What it is
Tencent Cloud Chat (IM) SDK is a messaging SDK and hub repository providing chat APIs and UIKit components for building real-time in-app messaging across Android, iOS, Web, Flutter, React Native, and more. It supports one-to-one and channel chat, offline push notifications, read receipts, and communities up to 1,000,000 members, with a free tier of 1,000 MAU/month.

## Use cases
- add in-app chat to a mobile app
- build a social messaging app with 1-on-1 and group chat
- send offline push notifications for new messages
- embed a prebuilt chat UI in React or Vue
- create large fan communities with topic-based channels
- add read receipts and typing indicators to chat
- build a customer support chat feature

## When to choose
- you need cross-platform real-time messaging with minimal setup
- you want a prebuilt chat UIKit to ship quickly
- you need offline push notifications and message status features
- your app fits within the 1,000 MAU free tier
- you need very large communities (up to 1M members)

## When to avoid
- you need fully self-hosted messaging with no cloud dependency
- you require an OSI-approved open-source license for the SDK
- you want to avoid vendor lock-in to Tencent Cloud
- you need full control over message storage and infrastructure

## Facets
- artifact type: library
- maturity: active
- function: sdk, chat-interface, ui-components, websocket
- domain: messaging-platforms, mobile-development, web-development, cross-platform
- platform: cross-platform, windows
- tags: chat-sdk, instant-messaging, in-app-messaging, tencent-cloud, offline-push, uikit, real-time-messaging, freemium, push-notification, real-time, android, ios, web-server, flutter, react-native, macos

## Member repositories
- TencentCloud/TIMSDK (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:16.485688+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T08:19:09.063392+00:00, confidence not recorded.
  - readme: https://github.com/TencentCloud/TIMSDK (fetched 2026-08-28T04:07:16.485688+00:00, sha 591946a80405)
  - homepage: https://trtc.io/products/chat (fetched 2026-08-29T09:57:24.483571+00:00, sha a838ffff770b)
  - site_page: https://trtc.io/product-features-comparison (fetched 2026-08-29T09:57:24.494894+00:00, sha 79e93bf5c3e0)
  - site_page: https://trtc.io/pricing/calculator (fetched 2026-08-29T09:57:24.503503+00:00, sha e0a36300b778)
  - site_page: https://trtc.io/pricing/call (fetched 2026-08-29T09:57:24.505195+00:00, sha 475cb5d30c16)
  - site_page: https://trtc.io/products/conference (fetched 2026-08-29T09:57:24.492885+00:00, sha 6f2ed44cad09)
  - site_page: https://trtc.io/document (fetched 2026-08-29T09:57:24.496680+00:00, sha 42a1861f7e13)
  - site_page: https://trtc.io/demo/homepage (fetched 2026-08-29T09:57:24.498338+00:00, sha 2e4bc1122e5a)
  - site_page: https://trtc.io/pricing (fetched 2026-08-29T09:57:24.499948+00:00, sha 0ce19403e14b)
  - site_page: https://trtc.io/pricing/promotion (fetched 2026-08-29T09:57:24.501817+00:00, sha b95abde1f89c)
- Data as of 2026-08-30T08:39:29.467469+00:00.