Data Retention Policy
Last updated: March 1, 2026
nisk.ai is designed with a local-first, privacy-by-default architecture. This policy explains exactly what data exists, where it lives, and how long it persists.
1. What We Store
All user data is stored exclusively in your browser's localStorage. Nothing is stored on nisk servers. Here is a complete list of stored data:
| Data | Location | Retention |
|---|---|---|
| App preferences (language, mode, persona, voice) | Browser localStorage | Until you clear it |
| Session notes and saved cards | Browser localStorage | Until you clear it |
| Voice signature | Browser localStorage | Until you remove it |
| Emergency contact number | Browser localStorage | Until you clear it |
| Custom modes | Browser localStorage | Until you delete them |
| Credit balance | Browser localStorage | Until you clear it |
| Consent cookie | Browser cookie | 1 year |
2. What We Do NOT Store
- Audio recordings — Audio is processed in real-time by Deepgram for transcription and immediately discarded. No audio is ever recorded or saved.
- Conversation transcripts — Transcripts exist only in your browser's memory during a session. They are never sent to or stored on nisk servers.
- Camera images — Photos taken via the Snap feature are sent to the AI for analysis and immediately discarded. No images are stored.
- Location data — GPS coordinates are used in real-time when enabled and never stored on our servers.
- Payment card details — All payment processing is handled by Stripe. We never see or store your card information.
3. Server-Side Processing
All API calls between your browser and our servers are stateless. We do not maintain session state, user accounts, or any persistent data on our servers. Each API request is processed independently and the response is returned without any data being retained.
4. Third-Party Data Processors
- Anthropic (Claude API) — Receives conversation text for AI analysis. Subject to Anthropic's privacy policy.
- Deepgram — Receives audio stream for real-time transcription. No storage.
- Stripe — Handles payment processing. Subject to Stripe's privacy policy.
- ElevenLabs — Receives text for voice synthesis. No storage.
5. How to Delete Your Data
Since all data is stored locally on your device, you have complete control:
- In-app: Open Settings and tap "Delete All My Data" to erase everything immediately.
- In-app: Open Settings and tap "Download My Data" to export a JSON copy before deleting.
- Browser: Clear site data for nisk.ai in your browser's settings.
Deletion is immediate and permanent. There is no backup or recovery — once deleted, data cannot be restored.
6. Data Portability
You can export all your stored data at any time using the "Download My Data" button in the app settings. The export is a standard JSON file (nisk-data-export.json) that you can inspect, store, or import into other tools.
7. Contact
For questions about data retention, contact us at privacy@nisk.ai.