Applets, tools, and your data
assembled.

Sandboxed Web Applets

Execute lightweight web applications crafted with standard HTML, CSS, and JavaScript. Each applet runs securely isolated within an on-device sandbox without dependencies on remote servers.

Embedded AI Agent Skills

Prompt your local AI agent in conversational English to generate new applets, custom utilities, or database schemas. Build bespoke interactive tools tailored exactly to your workflow in seconds.

Fuusio FlowsNew

Draw what your phone should do. A Flow is a graph of nodes you connect with your finger, each doing one thing: wait until 07:30, read the battery, notice a geofence, Wi-Fi network or NFC tag, find today's to-dos in your database, speak a sentence, post a notification. Add a JavaScript node when the ready-made ones aren't enough.

Add buttons, sliders, toggles, labels and progress bars, lay them out in the View editor, and the Flow becomes a small app of your own. A Flow can keep running in the background, even after a restart. Four showcase Flows to explore come with the app — Morning briefing, Battery guard, Water tracker and Focus timer — and your first Flow of your own is free. Everything runs on your device, offline.

Dashboard & Omnisearch Bar

Every session opens on a dashboard of your applets, tools, and recent work. The Omnisearch bar at the top finds anything by name, evaluates arithmetic as you type, and runs slash commands — /note, /todo, /uuid, /pw, /b64, /epoch — so you can capture a thought or generate a value without opening a single screen.

Fifty-Plus Utility Tools

A shelf of built-in calculators and converters sorted by category — finance, health, construction, science, text, travel, dates, and units. Unit and base converters, a regex tester, QR code generator, password generator, spirit level, compass, Pomodoro timer, and dozens more. Every one of them works offline.

Eight Built-in Games

Eight games ship with the app: Falling Blocks, Sudoku, Minesweeper, 2048, Lights Out, Fifteen Puzzle, Word Guess, and Tap & Fly. No ads, no accounts, no network connection — they run entirely on your device, like everything else in Fuusio.

Personal Object Database

Create and maintain an extensible personal database right on your device. Generate schema types, store custom data objects, and bind your applets directly to your personal data store.

Built-in Code & Markdown Editor

Inspect, write, and tweak HTML, CSS, JavaScript, Markdown, JSON, YAML, and plain text files on the go. Enjoy syntax highlighting tuned per language, clean typography, and instant live preview of your scripts.

Import, Export & Community Sharing

Package your applets into zip archives to share with friends, back up locally, or import tools shared through the Fuusio community server. Import and export are free for everyone. No vendor lock-in, ever.

Strict Privacy & Offline First

No user tracking, no telemetry, no mandatory cloud accounts. Everything runs locally on your Android device. Your data belongs strictly to you.