Field documentation,
perfectly linked.
CtxLens permanently connects your commentary, photos, GPS, and time tracking into professional reports. Every photo stays linked to its note. Every reader gets the full picture.
Coming to the App Store this month!
Can’t wait to try it!
Launching this month!
Can’t wait!
Built for the field.
Everything you need to document, track, and report — designed to work where you work, even without a signal.
Permanent Text-to-Photo Link
Every photo and PDF is forever linked to its commentary with SHA-256 deduplication. No loose files, no orphaned notes. The connection persists through every export and transfer.
Image ID Cross-References
Sequential Image IDs in narrative text point readers to numbered photos in the appendix. Optional visual stamps with configurable corner and font size.
On-Device AI Summaries
Apple Intelligence generates narrative or bulleted summaries entirely on-device via FoundationModels. No data ever leaves your phone. Includes an AI-optimized PDF export for external multi-modal AI consumption.
Professional Reports
Export to PDF, DOCX, or JSON. Formatted reports with title, AI summary, chronological entries, and photo appendix. Image ID stamps can be applied to photos in reports and as standalone exports.
Read the technical paper (PDF)Background Reports & Transfers
Large reports and transfers run in the background after an upfront file-size and time estimate, so you can keep creating cards — or close the app entirely. A floating progress pill stays on screen, with a Live Activity on your Lock Screen on iOS 26+. Disk-space checks, screen-wake during long exports, and single-operation guards keep big jobs reliable.
Works Completely Offline
All core functionality works without internet. SQLite database, on-device AI, local photo storage, device-to-device transfer. No cloud dependency whatsoever.
Activity & Timer Tracking
Stopwatches and countdown timers with full lifecycle management. Countdown alarms via AlarmKit with Lock Screen and Dynamic Island Live Activities. Multiple activities can run simultaneously.
GPS & Location
Manual or automatic GPS capture with reverse geocoding. Extract coordinates from photo EXIF data. Locations appear in exports and can be opened in Apple Maps or Google Maps.
Flexible Organization
Groups with two-level subgroup hierarchy and customizable labels. Up to 24 cross-cutting tags per entry. Full-text search (FTS5) across all entries. Bulk operations for efficiency.
Peer-to-Peer Sync
Transfer complete field records — entries, photos, tags, groups, and active timers — directly between devices. No internet required. End-to-end encrypted with conflict-free merging. Patent pending.
Peer-to-peer sync in action.
Field records transfer directly between devices — no internet required.
Your data stays yours.
Everything is stored locally on your device. AI summaries are processed entirely on-device via Apple Intelligence. No cloud dependency. No analytics. No tracking. CtxLens works without internet — your information never leaves your phone.