Perennial Echo Privacy Policy
Last updated: July 2026
For privacy questions about Perennial Echo, contact us at hello@perennial.you.
Summary
Perennial Echo is a desktop application designed to run on your machine. Your personas (communication fingerprints), drafts, and API keys stay local unless you choose to send text to an AI provider you configure. We do not require an account or subscription to use Echo.
What Echo Stores Locally
On your device, Echo may store:
- Personas (communication fingerprints) you import or create (Markdown
.mdfiles you own) - Draft input and output for the current session and editor restore points
- Your API keys for the providers you enable (Bring Your Own Key)
- App preferences (selected persona, target channel, UI settings)
- Free-tier token balance (remaining managed-AI allowance, synced from our servers when you use Default)
This data remains on your computer unless you delete it or uninstall the app.
What Leaves Your Device
Echo contacts remote services only when necessary for the features you use:
| Purpose | What is sent | Who receives it |
|---|---|---|
| Default provider (managed AI) | The text you submit for generation, plus relevant persona context, when you generate with Default | DeepSeek (deepseek.com) via Perennial's managed proxy. By using Default, you agree to DeepSeek's terms of service. |
| Bring Your Own Key | The text you submit for generation, plus relevant persona context | The API provider you configured (OpenAI, Anthropic, xAI, Google, Kimi, Qwen, DeepSeek, or another supported provider), sent directly with your key |
| Free tier / license | Device fingerprint and license validation metadata | Perennial (perennial.you) to register your free allowance or validate a paid license |
| App updates | Version check metadata (current version, platform) | Perennial release infrastructure (see perennial.you /echo download manifest) |
| Built-in MCP | Generation requests initiated from MCP clients you connect | Same as your active provider (Default or BYOK) |
When using Default, your prompt content is transmitted to DeepSeek's API through our proxy. When using Bring Your Own Key, prompt content is transmitted directly to your chosen provider.
What We Do Not Collect in Echo
Perennial Echo does not:
- Require a Perennial account or login for free tier use
- Upload your personas to Perennial by default
- Store your BYOK API keys on Perennial servers
- Use your drafts to train Perennial or third-party models (provider policies apply to API traffic you send)
- Sell your personal data
Optional future features (such as cloud-hosted team personas) will be described separately before they ship and will require your explicit choice to use them.
Third-Party Subprocessors (Default Provider)
When you use Echo's Default managed provider, we route requests to:
| Service | Role | Data received |
|---|---|---|
| DeepSeek | AI inference for Default drafts | Prompt content and generation context you submit |
perennial.you (Marketing Site)
Downloading Echo from perennial.you may use standard web analytics (for example, Vercel Analytics) on the marketing pages only: page views and coarse device or region data. That analytics does not include your Echo drafts or personas.
Purchasing a persona file (communication fingerprint) on perennial.you is governed by the main Privacy Policy for orders and questionnaires.
Updates and Security
Echo checks for application updates automatically so you receive security fixes and improvements. Update packages are distributed via the release channel linked from perennial.you.
Keep your operating system and Echo installation current. Protect API keys as you would any credential on your machine.
Changes
We may update this policy as Echo evolves. Material changes will be reflected on this page with an updated "Last updated" date.