Inside the app
A closer look.






About this app
Made for a clear purpose.
Seisvault: SEG-Y Viewer is a focused, fully on-device app. An offline SEG-Y field viewer for textual and binary headers, trace inventory, sample-format decoding, wiggle or variable-density display, gain, and header QC.
KEY FEATURES - Open SEG-Y revision 0, 1, and common revision 2 files - Read textual, binary, and bounded trace-header inventories - Decode IEEE float and signed integer sample formats - Switch wiggle, variable-density, gain, polarity, and trace spacing - Map inline, crossline, coordinate, fold, and sample-interval consistency - Complete bundled sample and local comparison workflow - Local PDF report and Apple system share export - Original offline technical reference library
ONE-TIME AND PRIVATE - One paid download; no subscription or in-app purchase - No account, advertising, analytics, tracking, or developer-operated backend - Core features and bundled content work offline - Work remains on device unless you deliberately share or export it through an Apple system interface
Seisvault is a field-review and teaching aid, not an interpretation or reserves platform. Confirm geometry, CRS, byte mappings, processing history, and source integrity independently.