Privacy Policy
Last updated: April 2026
Patient privacy by design
The Bladder Diary Calculator is built so patient diary data never leaves your browser. We do not collect, store, or transmit any patient identifiers, void or drink volumes, leakage events, or calculated diagnoses to any server, database, or third party.
How your diary data is stored
Diary entries you type in (or import from a PDF) are saved to your browser's local storage so you can resume a partially-entered diary across page refreshes and browser restarts. This data stays on the device you entered it on. It is never synced to a cloud, sent to us, or shared with anyone else. To clear it, click "Start a new analysis" on the home screen, or clear your browser's site data for bladderdiaries.com.
Cookies and anonymous analytics
We use one functional cookie (NEXT_LOCALE) to remember your interface language between visits: it contains a 2-letter language code and no personal information. We also use Vercel Analytics to count anonymous events that help us improve the tool: choosing entry method, successful PDF imports, calculating results, and chart or PDF exports. These events contain no patient data, no clinician identifiers, and no diary contents. We do not set advertising cookies, marketing cookies, cross-site trackers, or fingerprinting scripts.
Exported files
When you export a file (PDF handout, CSV row dump, .fhir.json FHIR R4 Bundle, or .ccd.xml HL7 C-CDA R2.1 Continuity of Care Document) or copy results to clipboard, the generated content is built locally in your browser and saved to your device only. It never transits bladderdiaries.com servers or any third-party system. The FHIR and C-CDA exports use a synthetic patient placeholder; the receiving EMR matches the document to a real chart on ingest. It is your responsibility to handle exported files in accordance with applicable data protection regulations (HIPAA in the US, GDPR in the EU, LGPD in Brazil, PIPL in China, and your organisation's policies).
Third-party links
This tool contains links to ipc.health and myflowcheck.com. These external sites have their own privacy policies which we encourage you to review.
Contact
For questions about this privacy policy, please visit ipc.health.