Lunaday: moon, tide calendar
Stargazing, dark sky & almanac
About
This app provides detailed daily moon phases, illumination, and celestial event information. It helps plan activities like stargazing and photography based on astronomical data, and offers tide and wave information for U.S. coastal areas.
What's New in Lunaday
1.0.1
July 9, 2026
Thanks for the warm launch-week welcome! 1.0.1 is a stability-and-polish update: - Fixed a crash in the Lunaday widget - Month grid now shows the correct weekday headers - The moon is drawn and phase-accurate everywhere - no more emoji - Smoother first run, a clearer Lunaday+ screen, and proper Restore feedback - New system-appearance option, calmer almanac empty state, gentle haptics
MoreIn-App Purchases
$9.99
Lunaday+
Full Sky Planner, sky events, swell & more.
Developer apps
FAQ
What is Lunaday?
Lunaday is a celestial calendar that provides detailed information on moon phases, illumination, moonrise and moonset times, and astronomical twilight. It also offers tide and wave data for U.S. coastal areas and helps plan stargazing activities.
Does Lunaday have ads?
No, Lunaday does not contain advertisements. It is designed to be private by default with no tracking or analytics, and network usage is limited to fetching necessary public data.
What features are included in Lunaday+?
Lunaday+ is a one-time purchase that unlocks a 30-day sky planner, a year of sky events, live swell and water temperature data, Siri Shortcuts, and advanced calendar options. Early supporters will retain all features even if future plans change.
How accurate is the tide and wave data in Lunaday?
The tide and wave data in Lunaday are sourced from official NOAA predictions and buoys for U.S. coastal stations, ensuring reliable and accurate information for users.
Can I use Lunaday offline?
The core astronomical calculations for moon phases and celestial events are computed on your device, meaning many features are available offline. However, tide and buoy data require network access to fetch from NOAA.
What devices is Lunaday available on?
Lunaday is available for iPhone, iPad, and iPod devices, running on iOS. The app is rated for ages 4 and up.
How often is Lunaday updated?
Lunaday was last updated on July 9, 2026, with version 1.0.1. The developer, michael ortiz, provides updates to enhance functionality and data accuracy.
Does Lunaday offer horoscopes or astrological predictions?
No, Lunaday strictly adheres to real astronomy and does not provide horoscopes or astrological predictions. Any traditional almanac notes, like full-moon folk names, are clearly labeled as folklore, not science.