# badoo/Chatto

A lightweight framework to build chat applications, made in Swift

Repository: https://github.com/badoo/Chatto
Canonical: https://ross.abutalabs.com/products/chatto
Language: Swift
License: MIT
License Family: permissive
Last push: 2026-08-19T06:13:15+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 8, longevity 100
- inputs: {"age_days": 3934, "days_push": 14, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4553, forks 588 (observed 2026-08-28T04:08:53.336258+00:00)

## What it is
Chatto is a lightweight Swift framework for building chat application UIs on iOS, designed for extensibility and performance. It ships with ChattoAdditions, a companion framework providing message cells (text, photo) and an extensible input bar component.

## Use cases
- build a chat interface in an iOS app
- display thousands of messages with smooth scrolling and pagination
- create custom message bubble types in Swift
- add an extensible message input bar to an app
- implement bidirectional pagination and autoloading in a chat feed
- add swipe-to-reveal accessory views on chat messages

## When to choose
- you need a customizable, performant chat UI in a native Swift/iOS app
- you want fine-grained control over message cells and input components
- your app handles large message histories requiring background layout calculation

## When to avoid
- you need a full chat backend with networking and sync built in
- you are building with SwiftUI rather than UIKit
- you target platforms other than iOS

## Facets
- artifact type: framework
- maturity: maintenance
- function: ui-components, frontend-framework, state-management
- domain: mobile-development, chatbots, web-development
- platform: -
- tags: chat-ui, swift-framework, messaging, uikit, cocoapods, carthage, ios, swift, mobile

## Member repositories
- badoo/Chatto (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:53.336258+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 2026-08-29T18:20:03.488811+00:00, confidence not recorded.
  - readme: https://github.com/badoo/Chatto (fetched 2026-08-28T04:08:53.336258+00:00, sha 67f4b9d02417)
- Data as of 2026-08-30T08:39:29.467469+00:00.