LEGAL
Privacy Policy
Last updated: April 4, 2026
Overview
Stackeddd is designed to keep your health data private by default. We do not run servers that store your personal data, and the developer has no ability to access what you log in the app.
Data Stored on Your Device
All health data you enter — your stack, protocols, injection logs, labs, nutrition, supplements, and profile — is stored exclusively on your device. It never leaves your device.
AI Coach (Built-in Free Tier)
If you use the built-in AI coach (no API key), your messages and a snapshot of your health context are sent to Anthropic’s API to generate a response. We do not log, store, or retain these messages. Conversations are not used to train AI models under Anthropic’s current API terms.
AI Coach (Your Own API Key)
If you add your own Anthropic, OpenAI, or OpenRouter API key, your messages go directly from your device to that provider. They never pass through any server we control. Your provider’s privacy policy applies.
Feedback
If you submit feedback via the Feedback button, your message is sent to AgentMail (our feedback routing service). Feedback may include the text you type and your email if provided. This data is used only to respond to your feedback and is not shared with third parties.
Analytics
We do not use analytics. No session tracking, no event tracking, no third-party SDKs of any kind, anonymous or otherwise. We have no visibility into how the app is used — the trade-off is that we discover usability issues only when you tell us. The upside is your behavior is yours alone.
No Advertising, No Data Sales
We do not run ads. We do not sell, share, or monetize your data in any form.
Children
This app is not intended for users under 18. We do not knowingly collect information from minors.
Changes to This Policy
We may update this policy as the app evolves. Material changes will be noted with an updated date at the top.
Contact
Questions about privacy? Reach us at hello@stackeddd.app or via the Feedback button in the app.