Moon Calendar Watch

Review by eFreeware

If you plan evenings around the moon, Moon Calendar Watch is worth a look. It is built for people who want to know when the moon rises, when it sets, how full it is and how that changes over the coming days, all worked out for wherever they happen to be. That covers photographers chasing moonlight, hikers timing a night walk, campers deciding whether to cook by lantern or moon, and anyone who simply likes looking up.

The app comes from AppMosaic and sits in the Travel & Local category on Google Play. It is a paid download at $2.49, with no ads and no in-app purchases, so the whole thing is settled at the till. It has been on the store since November 2015 and was last updated in June 2026, with more than 10,000 installs and a 3.3 average from 92 ratings. Those numbers suggest a modest but established tool rather than a mass-market one, which fits the subject matter.

The moon phase display and how you move through it

The core of the app is a depiction of the current moon phase, paired with the times of sunrise, sunset, moonrise and moonset. Those times are calculated for your position: the app determines your GPS location and works out the sun and moon data for that spot. For someone deciding whether an evening walk will have light, or whether a night shoot is worth packing for, that pairing of phase and times is the useful part.

Moving through dates is deliberately simple. A left or right swipe takes you to the moon of the next day, so you can scan forward through the month rather than jumping between screens. There is also an animation of the Moon Phase Calendar, which plays through the cycle to give a quick overview of how the month shapes up. I like that combination: the swipe is for checking one specific date, and the animation is for getting the shape of the weeks ahead in a few seconds.

The developer leads with this phase view and the rise and set times, and it is easy to see why. It is the part of the app that answers the question most people arrive with, and it does so without sending them hunting through menus.

Watch support and offline viewing

Beyond the phone screen, the app extends to smartwatches. Wear OS, Garmin and Amazfit devices can show its Moon Phase Calendar, as can Samsung Gear S2 and S3 watches. Having the phase on a wrist is a natural fit for this kind of tool, since the whole point is a quick glance rather than a session with a phone in hand.

The watch side is described as usable without a connection to your phone, which is the detail that matters most for anyone taking it outdoors. The catch: the developer recommends opening the phone app roughly weekly so the watch's moon data stays current. That is a small routine, but it is a routine, and it is the sort of thing worth knowing before you rely on the watch alone during a long trip.

On Wear OS specifically, the app also provides a watchface. The developer is careful to note that it does not include a tile or complication, and warns that Google Play may incorrectly claim otherwise. If you were expecting a complication on your watch face, that expectation needs adjusting before you buy.

What the app asks of you

The app needs your GPS location to do its main job. The times it reports are calculated for where you are, so location access is not an optional extra here; it is the mechanism behind the numbers. For a travel and outdoors tool that seems a fair exchange, and it is the reason the app can be specific rather than generic.

The other requirement is the weekly refresh for watch users. The phone app has to be opened roughly once a week so the moon data on the watch stays current. If you wear a supported watch and want the phase there, build that into your habits; if you mainly use the phone, this does not apply to you.

On cost, the picture is simple: Moon Calendar Watch is a one-off $2.49 purchase, and the app is rated for Everyone.

How I would use it through a month

The natural rhythm is to check in when a date matters rather than every day. Before a night hike, a camping trip or an evening of photography, swipe forward to the date in question and read the phase alongside the rise and set times for your location. The animation is the better tool when you are choosing between several possible evenings and want to see which one falls closest to a full moon.

For watch owners, the weekly phone session is the one piece of upkeep. Run the phone app, let it refresh the data, and the watch display stays useful on its own between updates. That makes the app workable on a trip where you leave the phone behind for stretches, provided you topped it up beforehand.

Offline viewing suits the places this app is likely to be used: trailheads, campsites, rural roads and anywhere else the signal is thin. Between the offline viewing and the watch mode, the app is designed to keep working when you are away from a reliable connection.

A focused tool for moon watchers

Moon Calendar Watch does one job and does it in a way that is easy to read at a glance, and offline viewing rounds it out for outdoor use.

The 3.3 average from 92 ratings is worth weighing. It is not a ringing endorsement, and with a paid app, there is no way to try before buying. Anyone considering it should read the current reviews and the developer's own FAQ and video before spending the $2.49.

If you want a straightforward reference for moon phases and sun and moon times, and you own one of the supported watches, this is a reasonable purchase. If you only need an occasional phase check and nothing more, the price and the location requirement may be more than the task deserves.

Questions I expect before buying

The app is a single-purpose tool, so most questions come down to what it covers, what it needs and how the watch side behaves. These are the points I would want settled first.

What's new in version 1.3.8

Please watch the video and read the FAQ: http://www.mooncalendarwatch.com/faq/