This update sharpens the interface: the iPad layout now uses a centered, comfortable reading width instead of stretching edge to edge, plus small display fixes. iPhone is unchanged; still fully on-device.

GoldenHorizon 2.0 — six new pro tools for sky and astrophotography planning, still 100% offline. • Exposure Calculator: ND long-exposure with stackable filters, EV, Sunny-16 table, and an equivalent-exposure solver. • Moon Distance & Size: Meeus distance, supermoon scale, angular diameter, and optical libration with limb guidance. • Find-When Solver: the days the sun or moon rises or sets at the bearing you want. • Panorama Planner: rows, columns, pan/tilt steps, and output megapixels for your lens. • Stacking Planner: how many subs for a target signal-to-noise or a time budget, with deep-sky presets. • Sky Almanac: equinoxes, solstices, cross-quarters, and full/new moons with blue-moon flags. All astronomy and optics math is computed on-device and oracle-verified. No account, no network — everything stays on your device.

What's New — GoldenHorizon 1.1 Night Exposure Calculator (NPF Rule). Know the exact maximum shutter speed before stars smear into trails on your specific camera. The NPF Rule (Frédéric Michaud / Société Astronomique du Havre) accounts for your sensor's pixel pitch, aperture, and the sky declination of your target — not just focal length. Pick your camera body from the 36-body library, set aperture and focal length, choose a sky target (Milky Way core, Orion, Andromeda, Pleiades, or free-enter any declination), and read the NPF limit alongside classic 500 and 600 rule estimates. The recommended shutter is rounded down to the nearest real camera setting (1 s – 30 s ladder) so you can dial it in on location. Hyperfocal Distance Calculator. Find the precise focus distance where foreground to infinity is acceptably sharp. Choose camera body, focal length, aperture, and circle-of-confusion precision — standard (÷1500) for general use, conservative (÷1730) for 24 MP+ sensors, or fine (÷2000) for 40 MP medium-format bodies. A live focus-distance slider shows the near and far depth-of-field limits updating in real time, with a success banner when you reach the hyperfocal point. Tap the m/ft toggle to switch between metres and feet.

GoldenHorizon 1.1 adds a Shot Planner (camera sensor picker with live field-of-view, saved locations, reminders, CSV export), a Locations manager with GPS auto-fill, moonrise/moonset on the Today tab, and planet tracking. Fully offline astronomy — no account, no tracking.