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

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

     

[!NOTE] SwiftSlate works in most apps — WhatsApp, Gmail, Twitter/X, Messages, Notes, and more. No copy-pasting. No app switching. Just type and go. Some apps with custom input fields may not be supported (see limitations).

📋 Table of Contents

• Quick Demo
• Features
• Built-in Commands
• Getting Started
• How It Works
• Custom Commands
• API Key Management
• App Screens
• Privacy & Security
• Tech Stack
• Building from Source
• Known Limitations
• Contributing
• License

⚡ Quick Demo

📝  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?"

✨ Features

🧩 Built-in Commands

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

🚀 Getting Started

Prerequisites

Installation

[!TIP] The APK is only ~1.3 MB — lightweight with zero external dependencies for networking or JSON.

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

Setup in 3 Steps

⚙️ How It Works

flowchart TD
    A["📝 You type: 'Hello wrld, how r u ?fix'"] --> B{"🔍 Accessibility Service\ndetects trigger"}
    B --> C["✂️ Extracts text before trigger:\n'Hello wrld, how r u'"]
    C --> D["🔑 Selects next available\nAPI key (round-robin)"]
    D --> E["🤖 Sends text + prompt\nto AI provider"]
    E --> F["⏳ Shows inline spinner\n◐ ◓ ◑ ◒"]
    F --> G["✅ Replaces text in-place:\n'Hello world, how are you?'"]

    style A fill:#1a1a2e,stroke:#e94560,color:#fff
    style B fill:#1a1a2e,stroke:#0f3460,color:#fff
    style C fill:#1a1a2e,stroke:#0f3460,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

🎨 Custom Commands

Go beyond the built-ins — create your own trigger → prompt pairs in the Commands tab.

How to Create One

1. Open the Commands screen
2. Enter a Trigger (e.g., ?poem)
3. Enter a Prompt — the instruction sent to the AI
4. Tap "Add Command"

Example Ideas

[!TIP] Just describe the transformation you want — SwiftSlate's system instruction automatically ensures the AI returns only the transformed text without extra commentary.

🔑 API Key Management

SwiftSlate supports multiple API keys with intelligent rotation:

[!TIP] Adding 2–3 API keys helps avoid rate limits during heavy use. Each API key has its own quota.

🖥️ App Screens

SwiftSlate has four screens accessible via the bottom navigation bar:

🔒 Privacy & Security

[!NOTE] SwiftSlate is built with privacy as a core architectural principle, not an afterthought.

🏗️ Tech Stack

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

🔨 Building from Source

Prerequisites

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

Build

# 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

⚠️ Known Limitations

• 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.

🤝 Contributing

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

Ideas for Contributions

• 🧩 New built-in commands
• 🤖 Additional AI provider integrations
• 🎨 UI improvements and new themes
• 🌍 Localization / translations
• 📖 Documentation improvements

📄 License

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