Support

Each AI provider has their own process for getting API keys:

• Anthropic: Sign up at console.anthropic.com
• OpenAI: Sign up at platform.openai.com
• Google: Get a key at aistudio.google.com
• xAI: Sign up at console.x.ai

See our documentation for detailed instructions.

Yes. Your API keys are stored securely on your device using platform-native encryption:

• iOS: Stored in the Keychain with hardware-backed encryption
• Android: Stored in EncryptedSharedPreferences with AES-256

Your keys are sent directly to the AI providers you choose to use—they never pass through our servers.

Common reasons an API key might not work:

• The key was copied incorrectly (check for extra spaces)
• The key has been revoked or expired
• Your account doesn't have sufficient credits/balance
• The key doesn't have permission for the model you're trying to use

Try regenerating the key in your provider's dashboard.

sine~ itself is free to use. However, you'll need API keys from AI providers, and they charge based on usage:

• Each provider has their own pricing model
• Costs are based on tokens (words) processed
• You pay providers directly—sine~ takes no cut

Check each provider's pricing page for current rates.

You can browse your conversation history offline, but sending new messages requires an internet connection to reach the AI providers. sine~ doesn't run AI models locally—it connects to cloud services.

It depends on your needs:

• Claude 3.5 Sonnet: Great balance of speed and capability
• Claude 3 Opus: Best for complex reasoning tasks
• GPT-4o: Fast with multimodal capabilities
• Gemini 1.5 Pro: Excellent for long documents
• Smaller models (Haiku, Flash): Faster and cheaper for simple tasks

You can switch models mid-conversation to compare answers!

Agents extend your AI with additional capabilities:

• E2B: Execute Python/JavaScript code in secure sandboxes
• OpenAI Assistants: Analyze files with Code Interpreter
• Tavily/Brave: Search the web for current information

Enable agents in Settings → Agents. Each requires its own API key.

MCP (Model Context Protocol) servers are third-party services that provide custom tools for your AI. They can connect to databases, APIs, and other services. Popular options include servers on Smithery.ai that provide tools for specific tasks.

Add MCP servers in Settings → MCP Servers.

No. sine~ stores all data locally on your device with encryption. We don't collect your conversations, API keys, or usage data. See our Privacy Policy for details.

Yes, completely:

• Delete individual conversations by swiping in the list
• Remove API keys in Settings → Providers
• Uninstall the app to remove all data

Since we don't collect any data, there's nothing to delete on our end.

Try these steps:

1. Force quit and restart the app
2. Check for app updates
3. Restart your device
4. If the problem persists, reinstall the app

If crashes continue, please report the bug with your device model and iOS/Android version.

Response times depend on:

• Your internet connection speed
• The AI provider's server load
• The model you're using (larger models are slower)
• The length of your conversation history

Try switching to a faster model (like Haiku or Flash) for quicker responses.