Astrosift: FITS Workbench

Astrosift: FITS Workbench is a focused, fully on-device app. A private FITS image and header workbench for HDU inventory, monochrome previews, stretch controls, pixel statistics, star-candidate measurement, and observation handoff. KEY FEATURES - Open primary FITS image HDUs with common integer and float bit depths - Inspect 80-character header cards and extension inventory - Preview monochrome data with linear, square-root, or logarithmic stretch - Measure background, saturation, centroid, FWHM, and candidate peaks - Export a contact sheet, pixel statistics, and observation report - 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 Astrosift is an inspection and planning tool, not a calibrated scientific pipeline. Verify photometry, world coordinates, debayering, and observatory-specific conventions elsewhere.