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About
Sightloom: Celestial Nav is a focused, fully on-device app. A complete offline celestial-navigation workbench for sextant correction, almanac interpolation, sight reduction, running fixes, intercept plots, and voyage logs. KEY FEATURES - Observed-to-apparent altitude correction ledger - Computed altitude, azimuth and intercept - Two- and three-sight running-fix workspace - Offline almanac interpolation examples - Voyage log and PDF handoff - Editable complete sample and local project persistence - CSV input plus local PDF and data export - Fifty-two original offline reference plates 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 Training and cross-checking aid only. Maintain an approved almanac, tables, chronometer practice and primary navigation system.
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