GHOST Privacy Policy
Last updated: 3 July 2026
GHOST is built local first. Your practice lives on your device, not our servers. We have no servers, no accounts, and no logins, and we do not sell or share your personal information. This policy explains the little data the app handles.
What stays on your device
Every drill session, score, streak, drill plan, report, and preference is stored locally on your device using Apple's on device database. It is never uploaded to us and we cannot see it. Deleting the app, or using Reset in Settings, erases it permanently.
What leaves your device
1) AI analysis. When, and only when, you choose to run an analysis, the app sends the numeric metrics of your recent strokes (scores, deviations, drill types, dates) to our AI provider, Anthropic, to generate your written diagnosis and drill plan. This carries no name, email, contacts, location, or account, only anonymous practice numbers. See Anthropic's privacy policy at https://www.anthropic.com/legal/privacy.
2) Purchases. Any purchases are processed by Apple. Apple handles the payment; we never receive your card number or Apple ID, only Apple's anonymous confirmation that a transaction completed.
What we do not collect
No account or login. No analytics or usage tracking. No advertising or ad identifiers. No third party trackers. No access to your photos, contacts, microphone, camera, or location. Beyond Apple and Anthropic, no third parties receive your data.
Your controls
Export every session as a CSV file, and erase all data at any time, from within the app or by deleting it. Because we hold no copy of your data, there is nothing on our side to request or delete.
Children
GHOST is not directed to children under 13, and we do not knowingly collect personal information from them.
Changes
If this policy changes, we will update the date above and post the new version here.
Contact
Questions about privacy? Email pradeep.aneesh@gmail.com.