SwiftSlate

System-wide AI text assistant for Android — powered by Gemini, custom providers, and local LLMs

Type a trigger like ?fix at the end of any text, in any app, and watch it get replaced — instantly.

     

• Quick Demo
• Features
• Built-in Commands
• Text Replacer Commands
• Getting Started
• How It Works
• Custom Commands
• API Key Management
• Backup & Restore
• App Screens
• Localization
• Privacy & Security
• Tech Stack
• Building from Source
• Known Limitations
• Contributing
• Support the Project
• License

📝  You type       →  "i dont no whats hapening ?fix"
⏳  SwiftSlate      →  ◐ ◓ ◑ ◒  (processing...)
✅  Result         →  "I don't know what's happening."

📝  You type       →  "hey can u send me that file ?formal"
⏳  SwiftSlate      →  ◐ ◓ ◑ ◒  (processing...)
✅  Result         →  "Could you please share the file at your earliest convenience?"

📝  You type       →  "Hello, how are you? ?translate:es"
⏳  SwiftSlate      →  ◐ ◓ ◑ ◒  (processing...)
✅  Result         →  "Hola, ¿cómo estás?"

SwiftSlate ships with 9 AI-powered commands plus dynamic translation — ready to use out of the box:

Beyond AI, you can create text replacer commands that run entirely offline — no API key, no network, instant execution. These are custom commands you define with the "Text Replacer" type.

Text replacer commands replace the trigger with a fixed string. They're perfect for:

1. Download the latest APK from the Releases page

2. Install the APK on your device (allow installation from unknown sources if prompted)

3. Open SwiftSlate and follow the setup below

flowchart TD
    A["📝 You type: 'Hello wrld, how r u ?fix'"] --> B{"🔍 Accessibility Service\ndetects trigger"}
    B -- "Text Replacer" --> C["⚡ Instant local replacement\n(no network call)"]
    B -- "AI Command" --> D["🔑 Selects next API key\n(round-robin)"]
    D --> E["🤖 Sends text + prompt\nto AI provider"]
    E --> F["⏳ Shows inline spinner\n◐ ◓ ◑ ◒"]
    F --> G["✅ Replaces text in-place"]
    C --> G

    style A fill:#1a1a2e,stroke:#e94560,color:#fff
    style B fill:#1a1a2e,stroke:#0f3460,color:#fff
    style C fill:#1a1a2e,stroke:#00b894,color:#fff
    style D fill:#1a1a2e,stroke:#0f3460,color:#fff
    style E fill:#1a1a2e,stroke:#0f3460,color:#fff
    style F fill:#1a1a2e,stroke:#e94560,color:#fff
    style G fill:#16213e,stroke:#00b894,color:#fff

Go beyond the built-ins — create, edit, and manage your own commands in the Commands tab.

1. Open the Commands screen
2. Select the command type: AI or Text Replacer
3. Enter a Trigger (e.g., ?poem)
4. Enter a Prompt (for AI) or Replacement text (for Text Replacer)
5. Tap "Add Command"

• Tap the ✏️ edit icon on any custom command to modify its trigger, prompt, or type
• Tap the 🗑️ delete icon to remove it
• Built-in commands are read-only

SwiftSlate supports multiple API keys with intelligent rotation:

Export and import your custom commands as JSON files — useful for migrating to a new device or sharing command sets.

• Export — Saves all custom commands to a .json file via Android's file picker
• Import — Loads commands from a .json file (validates format, trigger prefix, and size limits before importing)

Find both options in the Settings tab under Backup & Restore.

SwiftSlate has four screens accessible via the bottom navigation bar:

SwiftSlate's UI is available in 7 languages:

The app automatically uses your device's language. Contributions for additional translations are welcome!

Zero third-party dependencies for networking or JSON parsing — SwiftSlate uses only Android's built-in APIs.

• Android Studio (latest stable)
• JDK 17
• Android SDK with API level 36

# Clone the repository
git clone https://github.com/Musheer360/SwiftSlate.git
cd SwiftSlate

# Build debug APK
./gradlew assembleDebug

# Output: app/build/outputs/apk/debug/app-debug.apk

export KEYSTORE_FILE=/path/to/your/keystore.jks
export KEYSTORE_PASSWORD=your_keystore_password
export KEY_ALIAS=your_key_alias
export KEY_PASSWORD=your_key_password

./gradlew assembleRelease

• Some apps use custom input fields that don't support Android's standard text replacement APIs. SwiftSlate includes a clipboard-based fallback, but apps like WeChat and Chrome's address bar may still not work. Most standard text fields (messaging apps, email composers, notes, etc.) work fine.
• Some OEMs restrict accessibility services. Certain manufacturers (e.g., OnePlus, Xiaomi) may hide or block third-party accessibility services in their settings UI. If SwiftSlate doesn't appear in your accessibility settings, check for a "Downloaded apps" or "Installed services" section, or try searching for it.

Contributions are welcome! Here's how to get involved:

# 1. Fork the repository, then:
git clone https://github.com/YOUR_USERNAME/SwiftSlate.git
cd SwiftSlate

# 2. Create a feature branch
git checkout -b feature/amazing-feature

# 3. Make your changes and commit
git commit -m "Add amazing feature"

# 4. Push and open a Pull Request
git push origin feature/amazing-feature

• 🧩 New built-in commands
• 🤖 Additional AI provider integrations
• 🎨 UI improvements and new themes
• 🌍 Translations for more languages
• 📖 Documentation improvements

SwiftSlate is free, open source, and built in my spare time. If it's useful to you, consider supporting its development:

• ⭐ Star this repo — it helps others discover SwiftSlate
• 💖 Sponsor on GitHub — even a small contribution keeps the project going

This project is licensed under the MIT License — see the LICENSE file for details.