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Your observing records belong to you — not a server, not a subscription, not a sign-up form. Observing Notebook is an offline iPhone logbook for amateur astronomers who keep sessions in Excel or on paper and have had enough of planetarium apps that bury the logbook behind a $49/year wall. One purchase. No account. No cloud. All data stays on your device. PLAN TONIGHT'S SESSION See which deep-sky objects are actually visible from your location tonight. The built-in planner computes rise, set, t
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