Diana vs SimpleMoon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diana
Visualize the Moon's journey with detailed phase tracking and precise rise/set times for both the Moon and Sun. This app utilizes your location data to provide accurate astronomical information.
- Waxing and waning moon display
- New, quarter, full, and third-quarter phase dates
- Moon and Sun rise/set times
- Location-based astronomical calculations
- GPS positioning integration
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Diana graphically displays the waxing and waning of the Moon. # Functions: * Displays the waxing and waning of the Moon * Displays the dates of the Moon's new, first-quarter, full, and third-quarter phases * Displays the times of the rising and setting of both the Moon and the Sun * All figures are computed based on positioning data from GPS or location selection. # Support * Mail: support@sorakaze.co.jp * Twitter: @sorakazeinc
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.
- Real-time moon phase and illumination
- Date navigation and calendar selection
- Offline functionality
- Hemisphere-specific moon views
- Next full and new moon dates
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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.
Screenshots
Verdict
The clearest difference is rating: SimpleMoon at 4.9 against Diana's 3.5. SimpleMoon also leads on review sentiment (86% vs 65%) and ratings volume (304 vs 6). Diana's advantage is in-app purchases (none vs 1). On price, update cadence, ads and device support 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
Both are free to download. SimpleMoon sells 1 one-off in-app purchase. Diana asks for nothing beyond the download.
SimpleMoon holds the better App Store score, 4.9 against 3.5. That said, the two scores are not equally well evidenced: SimpleMoon has 304 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 65% of Diana's written reviews are positive against 86% of SimpleMoon's.
Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | Diana | SimpleMoon |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (6 ratings) | 4.9 (304 ratings) — better |
| Positive reviews | 64.6% of reviews | 86.1% of reviews — better |
| Number of ratings | 6 | 304 — better |
| Update frequency | Every 5 months | Every 5 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | sorakaze Inc. | Tag Along K |
Customer experience
Diana
SimpleMoon
Bugs and requests
Diana
Not enough reviews yet to summarise bugs or 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
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- Ability to browse history/past dates
- Display date, time, and location
- Improve accuracy of moon phases
In-app purchases
Diana
No in-app purchases
SimpleMoon
- Remove Ads from SimpleMoon$0.99
Questions
Is Diana free?
Is SimpleMoon free?
Which has better reviews, Diana or SimpleMoon?
Do Diana or SimpleMoon have ads?
Which is updated more often, Diana or SimpleMoon?
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