Fern

Live system pulse for Android
Material You monitor — CPU, RAM, battery, thermals, network.
Offline · No ads · No trackers · Optional Shizuku / root

Website · Download APK · Features

Screenshots

Home (dark)	Home (light)	Details	Active apps	More

Features

• Live dashboard — CPU, RAM, battery, storage, network with smooth history charts
• Material You — seed colors, light / dark / system, AMOLED-friendly dark
• Details & peaks — breakdowns and shareable metric snapshots
• Active apps — process view; per-app CPU / RAM with elevated access
• Sensors, tests, about — under More without cluttering Home
• Dynamic Island–style overlay (optional) — compact temp · RAM
• Advanced mode — Shizuku (preferred) or root for higher-fidelity sampling
• Fully offline — no account, no trackers, no ads

Elevated access

Enable Advanced mode in Settings → grant Fern in Shizuku (or use root).
When connected: richer CPU sampling and per-app memory / CPU on Active apps.

Privacy

No analytics SDK. Metrics stay on your device. Elevated access only runs what you enable.

Stable vs beta

Channel	Branch	Application id
Stable	main	com.endroid.fern
Beta / nightly	beta	com.endroid.fern.beta

PRs should target beta. Stable releases are promoted from beta to main. Both builds can be installed at once.

Install

https://github.com/wized2/Fern/releases/latest

Or build:

./gradlew assembleRelease

Build

./gradlew assembleDebug
./gradlew assembleRelease

Related

Project	What
Latch	Privacy-first Tasker-style automation (local rules, optional Shizuku)

Why Fern vs others?

	Fern	CPU-Z	Simple System Monitor
Open source	MIT	No	Varies
Material You	Yes	No	Limited
No ads / trackers	Yes	Ads in free	Often
Shizuku per-app stats	Yes	No	Rare
Fully offline	Yes	Partial	Often

Install options

• Latest APK
• Obtainium: add https://github.com/wized2/Fern
• F-Droid-style metadata lives in fastlane/metadata (listing pending)

Related

Also try Latch — privacy-first automation on the same stack.

Why Fern?

Most monitors are either bloated with ads or need root for basics. Fern aims for a clean Material You experience that works offline, with deeper metrics only when you opt into Shizuku.

Contributing

We want first-time contributors to succeed quickly.

1. Read docs/DEVELOPMENT.md (5‑minute setup).
2. Branch from beta and open PRs against beta (not main).
3. Pick a good first issue and comment that you’re on it.

Stable releases are promoted from beta → main. Beta builds use package id com.endroid.fern.beta so both apps can install together.

See CONTRIBUTING.md. Issues and PRs welcome — especially accessibility, OEM quirks, and chart polish.

License

MIT · Project Endroid

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If Fern is useful, a star helps others find it ⭐

First contribution in 15 minutes

1. Fork and clone this repo
2. Open in Android Studio (Giraffe+) or run ./gradlew assembleDebug
3. Run unit tests: ./gradlew testStableDebugUnitTest
4. Pick a good first issue
5. Open a PR against beta (tiny docs PRs may target main)

See CONTRIBUTING.md.

Contribute / contributor hunt

We actively welcome first-time PRs:

Start here	Link
Good first issues	https://github.com/wized2/Fern/labels/good%20first%20issue
Contributor hunt	https://github.com/wized2/Fern/labels/contributor-hunt
Help wanted	https://github.com/wized2/Fern/labels/help%20wanted
Guide	CONTRIBUTING.md

Typical first PRs: accessibility labels, empty states, unit tests, README translations.