Comparison

MOON vs Simple Moon Phase Calendar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MOON

Track lunar cycles with this comprehensive moon phase calendar. Get notifications for key events, view moon phases for any date, and share lunar imagery with friends. Features offline access and home screen widgets.

Highlights
  • Current moon phase viewing
  • Lunar event notifications
  • Home screen widget
  • Moon phase lookup for any date
  • Social sharing of moon imagery
  • Offline functionality
Features
Read full description

MOON is your personal lunar portal. ++ Best User Experience - Webby Awards 2017 Honoree ++ Never be caught off-guard by moon-related craziness again. View the current moon phase or what the moon will look like on a certain date, see countdowns to moon events, receive notifications with enough time to avoid unpleasantness, and share what the moon looks like on any day with your friends. MOON is the most thoughtful moon phase calendar available. It becomes increasingly useful the more you use it. Enjoy. Features * Works offline, never be stranded without lunar positioning * Notifications before Full Moons, New Moons, and other special lunar events * Widget for your Home Screen * Share the current moon with the iMessage app * View what the moon looks like on any date * Share what the moon looks like on any date to Facebook, Twitter, iMessage etc. * Save current moon image to camera roll * Lunar illumination percentage * Countdown to upcoming New and Full Moons * Beautiful animated, layered spacescape * Hemisphere setting * Universal app * Support for iPhone, iPad, and Apple Watch * Built for iOS 12+ * Shake for Star Harp Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://moonapp.me/privacy.html

About

Simple Moon Phase Calendar

A straightforward calendar app displaying detailed lunar information for each date. It includes moon phase, age, distance, illumination, zodiac sign, and rise/set times. Features a note function, widgets, and customizable notifications for key lunar events and Mercury retrograde.

Highlights
  • Moon phase and age display
  • Lunar distance and illumination
  • Moon sign and constellation
  • Mercury retrograde tracking
  • Moonrise and moonset times
  • Note function
  • Widget support
  • Customizable notifications
Features
Read full description

It is a simple moon phase calendar. Tap the date cell to display the detail screen. The data to display is the moon phase, moon age, distance, percent illuminated, moon sign , constellation, Mercury retrograde, moonrise and monnset etc. There is also a note function and Widget. You can notify on full moon, new moon, first quarter, last quarter, beginning and the end of Mercury retrograde.

Screenshots

MOON4 screens
Simple Moon Phase Calendar4 screens

Verdict

The call

The clearest difference is ads: MOON at none against Simple Moon Phase Calendar's shown. MOON also leads on update cadence (weekly vs every 5 months) and ratings volume (30K vs 86). On price, rating, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MOON sells 10 in-app purchases, starting at $11.99 per year and Simple Moon Phase Calendar sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for MOON against 4.8 for Simple Moon Phase Calendar. That said, the two scores are not equally well evidenced: MOON has 30K ratings behind it against 86, so its average is the more settled of the two. Written reviews are what separate them: 85% of MOON's written reviews are positive against 65% of Simple Moon Phase Calendar's.

UpkeepUpdate frequency

MOON ships an update weekly, Simple Moon Phase Calendar every 5 months. Both last shipped on November 6, 2026.

Scorecard7 real differences · 4 level
MOON versus Simple Moon Phase Calendar: the parameters behind the verdict, then further details
ParameterMOONSimple Moon Phase Calendar
PriceFreeFree
Rating4.8 (30K ratings) — better4.8 (86 ratings)
Positive reviews85.4% of reviews — better65.1% of reviews
Number of ratings30K — better86
Update frequencyWeekly — betterEvery 5 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#61 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size143 MB36 MB
Age rating4+4+
DeveloperMOON CALENDARFumihiro Takahashi

Customer experience

MOON

All ratings29,014 ratings
Positive96.2%
Neutral1.7%
Negative2.0%
Written reviews724 reviews
Positive85.4%
Neutral4.6%
Negative10.1%

Simple Moon Phase Calendar

All ratings85 ratings
Positive98.8%
Neutral0.0%
Negative1.2%
Written reviews63 reviews
Positive65.1%
Neutral12.7%
Negative22.2%

Bugs and requests

MOON

Reported bugs

2 issues
  • Widget not working for some users
  • Moon phase information inaccurate on certain dates

Requested features

4 requests
  • Add moon rise and set times
  • Include information on lunar events like eclipses
  • Allow customization of notification sounds
  • Provide Southern Hemisphere moon phase view

Simple Moon Phase Calendar

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

MOON

Subscriptions8
  • MOON Pro Yearly (NT)$11.991 Year
  • MOON Pro Yearly3 Days trial$11.991 Year
  • MOON Pro Yearly3 Days trial$19.991 Year
Show 5 more
  • MOON Pro Yearly$19.991 Year
  • MOON Limited Time Offer$19.991 Year
  • MOON Pro Yearly 50% Off3 Days trial$19.991 Year
  • MOON Pro (Yearly)3 Days trial$24.991 Year
  • MOON Pro (Yearly NT)$24.991 Year
One-time2
  • MOON Ambassador$4.99
  • MOON Supporter$9.99
2 purchases

Simple Moon Phase Calendar

One-time2
  • Remove Ads$1.99
  • Unlock$1.99

Questions

Is MOON free?
MOON is free to download, with in-app purchases available.
Is Simple Moon Phase Calendar free?
Simple Moon Phase Calendar is free to download, with in-app purchases available.
Which has better reviews, MOON or Simple Moon Phase Calendar?
MOON is rated higher. MOON averages 4.8 out of 5 from 30K ratings, while Simple Moon Phase Calendar averages 4.8 from 86 ratings.
Do MOON or Simple Moon Phase Calendar have ads?
Simple Moon Phase Calendar shows ads; MOON does not.
Which is updated more often, MOON or Simple Moon Phase Calendar?
MOON ships an update weekly, and Simple Moon Phase Calendar every 5 months. Most recently, MOON was updated on November 6, 2026 and Simple Moon Phase Calendar on November 6, 2026.

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