Comparison

SimpleMoon 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

SimpleMoon

Get accurate, real-time moon phase and illumination information for any day. Easily navigate through dates and view the moon's appearance for your specific hemisphere. The app works offline and provides upcoming full and new moon dates.

Highlights
  • Real-time moon phase and illumination
  • Date navigation and calendar selection
  • Offline functionality
  • Hemisphere-specific moon views
  • Next full and new moon dates
Features
Read full description

SimpleMoon provides a simple, elegant view of one thing: the moon phase and illumination for today (or any day you choose). SimpleMoon also shows you when the next full moon and new moon will occur from the "Today" view. So easy to use Tap the navigation buttons at the top or swipe to move between days. Use the calendar icon at the bottom to choose what date you want to see the moon view and illumination. Reliable and accurate SimpleMoon uses advanced mathematical calculations to determine the moon data for that day. It works even if you don't have an internet connection! Northern or Southern Hemisphere Did you know that the moon looks different depending on which hemisphere of the earth you are in? Go to Settings and pick which hemisphere you are in, and you will see the moon as it appears to you in the sky. Special thanks to my children, Alexander and Sophia who helped me design and test the app.

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

SimpleMoon4 screens
Simple Moon Phase Calendar4 screens

Verdict

The call

SimpleMoon and Simple Moon Phase Calendar both sit at 4.9 stars, but that hides the real split: 86% of SimpleMoon's written reviews are positive against 65% of Simple Moon Phase Calendar's. SimpleMoon also leads on device support (3 vs 1) and ratings volume (305 vs 86). On price, rating, update cadence and ads 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. SimpleMoon sells 1 one-off in-app purchase 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 — 4.9 for SimpleMoon against 4.8 for Simple Moon Phase Calendar. Both are backed by a comparable volume of ratings — 305 and 86 respectively. Written reviews are what separate them: 86% of SimpleMoon's written reviews are positive against 65% of Simple Moon Phase Calendar's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
SimpleMoon versus Simple Moon Phase Calendar: the parameters behind the verdict, then further details
ParameterSimpleMoonSimple Moon Phase Calendar
PriceFreeFree
Rating4.9 (305 ratings) — better4.8 (86 ratings)
Positive reviews86.1% of reviews — better65.1% of reviews
Number of ratings305 — better86
Update frequencyEvery 5 monthsEvery 5 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better26.0
Further details — not scored
Size20 MB36 MB
Age rating4+4+
DeveloperTag Along KFumihiro Takahashi

Customer experience

SimpleMoon

All ratings302 ratings
Positive98.0%
Neutral1.3%
Negative0.7%
Written reviews36 reviews
Positive86.1%
Neutral2.8%
Negative11.1%

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

SimpleMoon

Reported bugs

4 issues
  • Adult content appearing unexpectedly
  • Moon phase accuracy issues reported
  • App not rotating on iPads (resolved)
  • Displays (null)% and black moon

Requested features

8 requests
  • Include moon rise and set times
  • Add a widget for quick overview
  • Allow dragging to scroll through dates
  • App icon showing current moon phase
  • Southern Hemisphere option
Show 3 more
  • Ability to browse history/past dates
  • Display date, time, and location
  • Improve accuracy of moon phases

Simple Moon Phase Calendar

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

SimpleMoon

One-time1
  • Remove Ads from SimpleMoon$0.99
2 purchases

Simple Moon Phase Calendar

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

Questions

Is SimpleMoon free?
SimpleMoon 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, SimpleMoon or Simple Moon Phase Calendar?
SimpleMoon is rated higher. SimpleMoon averages 4.9 out of 5 from 305 ratings, while Simple Moon Phase Calendar averages 4.8 from 86 ratings.
Do SimpleMoon or Simple Moon Phase Calendar have ads?
Both SimpleMoon and Simple Moon Phase Calendar show ads.
Which is updated more often, SimpleMoon or Simple Moon Phase Calendar?
SimpleMoon ships an update every 5 months, and Simple Moon Phase Calendar every 5 months. Most recently, SimpleMoon was updated on November 1, 2026 and Simple Moon Phase Calendar on November 3, 2026.

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