Moon Phase Calendar

Moon Phase Calendar Moon Phase Calendar is an astronomy-focused calendar that shows lunar phases, moonrise/moonset, sun info, and day/night lengths, plus widgets and alerts—works online or offline.

Moon Phase Calendar

Moon Phase Calendar is a calendar app built for astronomy lovers. It shows a month-at-a-glance view that includes both Moon and Sun information—beyond standard calendar details like dates and holidays. You can also see the current lunar phase, plus moonrise and moonset times. The app even provides day-and-night length data so you can plan your schedule around natural light cycles.

To make things even easier, the app includes a variety of Moon-related widgets. With a simple tap, you can add them to your device, and they work whether you’re online or offline. The app is actively updated, with additional calendar events and new widgets added over time—so keep an eye out for improvements.

Key Features

Calendar + Moon/Sun Tracking

Use the in-app calendar to select any month and view important parameters for both the Moon and the Sun. This helps you follow lunar phases and solar events across time, making it easier to plan around these recurring natural cycles.

You’ll also find a compass-style view that visualizes the azimuth of the Sun and Moon, along with their elevation angles, based on your chosen location—helping you better understand where these bodies appear in the sky.

Notifications for Lunar Updates

Notifications keep you informed with real-time updates about the Moon’s illumination and its phase name. You can also receive alerts for upcoming major lunar milestones, so you have time to prepare.

Need historical or future details? The app lets you check Moon and Sun parameters for any date—past or upcoming. For example, you can look up meaningful dates like a birth date to see how lunar phases lined up with your life timeline.

Offline Access

Moon Phase Calendar supports offline use, so you can still access its core features without an internet connection. This is especially helpful in areas where connectivity is limited, ensuring you can view lunar and solar information wherever you are.

Moon Phase Widget

The app also offers a widget that displays the current Moon phase right on your home screen. This gives you quick access to lunar info at a glance—without opening the app—making it ideal if you frequently check what the Moon is doing.

What’s Included (Highlights)

• Moon view with 15+ parameters, including current phase, illumination, moonrise/moonset times, and upcoming phases.



• Sun view with 10+ parameters, including sunrise and sunset, dawn, twilight, and the length of day and night.
• Calendar view showing key Moon or Sun parameters for the selected month.
• Compass view that visualizes the Sun and Moon azimuths and includes the elevation angle for your location.
• Notification updates for current Moon illumination and phase name.



• Advanced notifications that alert you up to 3 days ahead of major phases: Full Moon, New Moon, First Quarter, and Last Quarter.
• Widget that visually represents the current Moon phase.
• Date lookup for Moon and Sun parameters for any time period (past or future), such as checking your birthdate.

User Reviews

• “I’ve had this app for 5 years on the free version and have never felt the need to upgrade. I use it to time when the Moon is in my Sun sign for Chrism rites. The ads are extremely minimal and have never been a problem. I plan to get the ad-free version just to support the team—this app is accurate, works well, and feels customer-focused. Great job.”

• “Solid app. The monthly calendar shows the phase for every day. There’s a ‘Day’ tab (main area with the Moon icon) that’s great for a quick look at the phase and sign, plus the next four major phases. Other tabs are also useful—clicking the calendar and then the center symbol (like a waxing crescent with the Aries symbol) makes it easy to see the Moon sign for the whole month.”

• “So informative! I love this app. It’s free and doesn’t bombard you with annoying pop-up ads. It’s packed with details about lunar cycles, sun cycles, and much more. I had to come back and update my review because it’s rare for an app to be truly ‘free’ like this one—thank you to the developers! And don’t forget to use the cute Moon widget.”

• “Awesome app! I use it to plan timing for where I need to be and for setting up photos of the Moon, sunrise, and sunsets. The price is hard to beat, and you only need to watch a short video ad—then there are no ads for 24 hours (unless you’re bothered by the small ad at the bottom). I’ve never had an ad pop up and block my info.”