HealthRecordPocket
A companion to patient health portals: download your lab reports, imaging CDs, or discharge summaries and view them in a zero-permission Android viewer that never touches the internet.
Patients and caregivers handling medical PDFs, lab results, and imaging discs on their phones
- One-tap open of any lab PDF, discharge summary, or DICOM disc image straight from email or browser share sheet
- Medical-term explainer: tap any clinical term in a lab report and get a plain-English definition — entirely on device
- Family mode: organize results by family member on a single device, each with its own PIN
- Auto-clean: documents and thumbnails are wiped on lock after a configurable window you control
The HN zero-permission file viewer trend shows that everyday users want to read sensitive files (medical, financial, legal) without apps quietly syncing them to servers — health records are the most painful version of this problem.
Patients do handle medical PDFs and imaging discs, but mychart. ca, LifeLabs, Ontario Health portals and similar free patient portals already let users view results online; general zero-permission viewers like Gander handle PDFs generically, lacking evidence of a large unmet dedicated-medical need.MyChart Personal Health Record ↗Gander - offline zero-permission Android viewer for PDFs (Hacker News) ↗
Gander already handles PDFs with zero permissions, GrapheneOS Secure PDF Viewer is a direct zero-permission PDF viewer on Play Store, and medical-specific DICOM viewers (Weasis, MicroDicom, MobileDicomViewer) already exist compressing the niche.Secure PDF Viewer - Apps on Google Play ↗Gander - offline zero-permission Android viewer ↗Weasis: Free DICOM viewer ↗
Zero-permission, privacy-focused file viewers trend toward free/open-source (Gander is open source, GrapheneOS PDF viewer is free); patient portals are free, and willingness to pay for a thin viewer wrapper appears very low.Gander - offline zero-permission Android viewer for PDFs (Hacker News) ↗Secure PDF Viewer - Apps on Google Play ↗
Health records will remain sensitive long-term and privacy-first file viewing is a durable concern, but paper/ CD -based result distribution is shrinking as portals and FHIR-based apps standardize delivery, softening the use case over time.Patient Access to Digital Health Services | Ontario Health ↗
Trivially feasible: existing zero-permission PDF rendering via sandboxed WebView + pdf.js is proven (Gander, GrapheneOS PDFViewer); adding DICOM would require extra work but reusing open libraries is straightforward.GitHub - GrapheneOS/PdfViewer: Simple Android PDF viewer based on pdf.js ↗Gander - offline zero-permission Android viewer ↗