BeachDaze vs SunSpan

All core features work without an internet connection, so when you're off the grid, you're still informed. Tides are calculated using harmonic analysis from over 3,000 stations worldwide. Sun, moon, and UV data use proven astronomical algorithms - no API keys or complex configuration needed. View Your Day The classic card view for quick conditions at a glance, or the chronological Timeline view - every event from moonset to last tide, with a live UV intensity bar that changes colour as the day progresses. Features - Golden hour and blue hour times with calendar reminders - Sunrise, sunset, and daylight duration - Moon phase, illumination, moonrise and moonset - High and low tide predictions with interactive chart - Automatic tide station selection with manual override - Station timezone support for remote locations - Works at over 6,000 tide stations globally - UV Index with manual cloud cover adjustment and peak forecast - Astronomical events in tonights sky - Configurable notifications for beach events - Convergence finder - next Low Tide at Golden Hour - Customizable dashboard - show, hide, and reorder cards - AlarmKit countdown for golden hour and blue hour (iOS 26+)

SunSpan — A Year of Daylight on One Screen SunSpan renders an entire year of sunrise, sunset, and twilight as a single chart. Each day is a vertical band shaded from astronomical night through nautical and civil twilight into full daylight, so the seasonal curve, the solstices, the equinoxes, and effects like white nights and polar day are visible at a glance. Tap or drag across the chart to select any day and see its sunrise, sunset, daylight length, and twilight phase times in a detail bubble. Features - Full-year daylight chart for any location, any year from 1900 to 2100 - Eight-stop twilight gradient: night, astronomical, nautical, civil, day - Tap or drag any day to inspect sunrise, sunset, daylight length, and twilight phase times - DST transitions marked on the chart - Location picker via satellite map, or automatic from device GPS - Time zone resolved automatically from the selected coordinates - Localized in English, Spanish, German, and Ukrainian Privacy No accounts, no analytics, no ads. Location is used only on-device to compute solar geometry and never leaves the device.