Secure AI Prompts Before They Leave Your Device
Local-first prompt analysis for iOS. Detect injection attacks, PII exposure, and secrets before sending prompts to any AI provider.
Free tier available. No account required. All analysis on-device.
Why PromptGuard?
Every time you paste information into ChatGPT, Claude, or any AI assistant, you're making a split-second decision about what's safe to share—and most people get it wrong. PromptGuard puts a security expert in your pocket, analyzing your prompts locally on your device before they ever leave your phone. It catches the email addresses you forgot to remove, the API keys hidden in that code snippet, and the subtle prompt injection patterns that could compromise your AI session. For professionals who rely on AI daily but handle sensitive information—developers, lawyers, healthcare workers, executives— PromptGuard is the safety net that lets you work faster without the constant anxiety of wondering what you just accidentally exposed.
Security features for every prompt
PromptGuard analyzes your prompts locally before they leave your device, protecting you from security risks and helping you understand API costs.
Security Detection
Detect injection attacks, PII exposure, secrets, and obfuscation attempts before prompts leave your device.
Local-First Privacy
All analysis happens on-device. Your prompts are never sent to external servers for security scanning.
Multi-Provider Support
Works with OpenAI, Anthropic, Ollama, and LM Studio. Secure prompts for any AI provider you use.
Guided Generation
Step-by-step secure prompt building with templates. Create effective prompts that follow security best practices.
Cost Estimation
Know your API costs before execution. See token counts and estimated spend for any prompt.
App Lock
Protect your prompts with Face ID or Touch ID. Biometric security keeps your AI conversations private.
Simple, transparent pricing
Start free with essential security features. Upgrade to Pro for advanced capabilities and guided prompt generation.
Free
Get started with essential prompt security
- Simple security analysis
- 1 local server connection
- 30-day prompt history
- Basic threat detection
Pro
Advanced features for power users
- Guided prompt generation
- Cloud provider support
- Prompt export & sync
- App lock (Face ID / Touch ID)
Family
Share Pro with your household
- Everything in Pro
- Share with up to 5 family members
- Family sharing via Apple
- Separate prompt histories
Stop Hoping Your Prompts Are Safe.
Start Knowing.
Download PromptGuard and analyze your AI prompts for security risks before they leave your device.