# thunder-app/thunder

An open-source cross-platform Lemmy & PieFed client for iOS and Android

Repository: https://github.com/thunder-app/thunder
Canonical: https://ross.abutalabs.com/products/thunder-app-thunder
Homepage: https://thunderapp.dev
Language: Dart
License: AGPL-3.0
License Family: copyleft
Topics: android, dart, flutter, ios, lemmy, fediverse, fediverse-client, threadiverse, piefed
Last push: 2026-09-02T20:21:38+00:00

## Health v2 (maintenance only)
Score: 85/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 65, longevity 84
- inputs: {"age_days": 1179, "days_push": 0, "days_rel": 238, "gap_med": 7, "n_releases_24m": 12}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1021, forks 76 (observed 2026-09-03T02:15:18.637468+00:00)

## What it is
Thunder is an open-source, cross-platform mobile client for Lemmy and PieFed, built with Flutter and Dart. It lets users browse, post, and interact with fediverse link-aggregation communities from iOS and Android.

## Use cases
- browse lemmy communities on my phone
- open-source reddit alternative client for android
- ios app for piefed forums
- read and post to the fediverse from mobile
- customize a lemmy client with card and compact views
- access lemmy.world and other instances on ios

## When to choose
- you want a native-feeling Lemmy or PieFed client on iOS or Android
- you prefer open-source, AGPL-licensed apps available on Play Store, App Store, and F-Droid
- you want a customizable interface with card, compact, and comment views

## When to avoid
- you need a desktop or web client for Lemmy
- you use fediverse platforms other than Lemmy or PieFed
- you need a project with a large full-time team rather than a community-driven side project

## Facets
- artifact type: application
- maturity: active
- function: mobile-framework, gui, http-client
- domain: social-media, mobile-development, cross-platform, self-hosted
- platform: cross-platform
- tags: lemmy-client, fediverse, piefed, reddit-alternative, flutter-app, threadiverse, android, ios, flutter, mobile

## Member repositories
- thunder-app/thunder (main) score 85

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:18.637468+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 2026-08-30T07:09:30.498854+00:00, confidence not recorded.
  - readme: https://github.com/thunder-app/thunder (fetched 2026-09-03T02:15:18.637468+00:00, sha 9a63c44c068d)
  - homepage: https://thunderapp.dev (fetched 2026-08-29T13:09:52.453509+00:00, sha 4797d956d171)
- Data as of 2026-08-30T08:39:29.467469+00:00.