App privacy
The full picture, in plain English.
Below is a full inventory of the data Speech Synk handles, what it's used for, and what we deliberately do not collect.
Data
Purpose
Linked to you
Tracking
Email address
Account authentication, password recovery, support
Yes
No
User ID (random)
Linking your sessions to your account
Yes
No
Audio (microphone)
Real-time DAF playback and on-device session insights
Yes (encrypted)
No
Practice metrics
Personal progress tracking
Yes
No
Crash logs
Bug fixes and stability (Firebase Crashlytics)
No
No
AI summary text
PII-stripped before being sent to Anthropic Claude API
No (anonymized)
No
What we do not collect
These categories never leave your device, period.
- Location
- Contacts
- Photos
- Calendar
- Browsing history
- Search history
- Advertising identifiers
- Device identifiers used for tracking
- Health & fitness data
- Financial information
Where data lives
Account data is stored in Firebase (US data center). Audio recordings are encrypted on your device with iOS Data Protection and synced only to your private Firestore document.
Who has access
Only you. The Speech Synk team cannot read your audio or personal practice data. We see only aggregate, non-identifying metrics like daily active users.
Need more detail? Read the full Privacy Policy.