Comparison

Mooncast vs Sun Alarm

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

Head to head
About

Mooncast

Discover the current phase of the moon with stunning visuals and precise data. Explore the lunar cycle, track upcoming full and new moons, and access historical and future lunar information. This app offers a beautiful and accurate way to stay informed about celestial events.

Highlights
  • High-fidelity moon phase visuals
  • Interactive lunar timeline
  • Accurate full and new moon predictions
  • Long-term lunar almanac
  • Precise peak moon timestamps
  • Smart lunar event reminders
  • Customizable visual themes
Features
Currently charting
Read full description

Mooncast is a beautifully crafted app showcasing the current phase of the moon with precision and clarity. This app is designed for both casual curiosity and serious sky-watchers. Explore the lunar cycle in rich visual detail, swipe through days to see past and future phases, and instantly find the next full moon or new moon. Mooncast gives you accurate lunar data for any date between 2011 and 2035, including the exact moment the moon becomes perfectly full. Features: - Stunning, high-fidelity moon phase visuals - Interactive timeline — swipe to explore any day - Accurate predictions for full moons, new moons, and all lunar phases - Built-in almanac for long-term browsing and planning - Precise timestamps for peak full moon and new moon - Smart reminders for full moon and new moon events - Customizable look - pick your favorite sky and clouds - Several types of widgets and accessories are available Extensive coverage: - available on iPhone, iPad, Mac, Apple Watch and Apple TV International support: - Fully localized in English, French, Spanish, Italian, German, Russian - Works seamlessly with all locales and calendar systems Mooncast is simple to use, scientifically accurate, and visually refined — the lunar calendar you’ll actually enjoy checking every day.

About

Sun Alarm

Never miss a sunrise or sunset with this app. It calculates solar event times for your location and allows you to set custom notifications. Stay in sync with natural light cycles for photography or daily planning.

Highlights
  • Sunrise and sunset time calculation
  • Customizable event notifications
  • Real-time location updates
  • Countdown to sun events
  • 12/24 hour time format toggle
  • Apple Watch support
Features
Read full description

Don't miss a sunrise or sunset again. Whether you want to live with the sun, do nice photos or just want to know when it's getting dark. This app calculates the sunrise and sunset times for your current location and lets you set up a notification for each event. Features: - Set alarms for sunset and -rise independently - Fires the notification before, after or at the exact time - Counts down to the next sun events - Updates while you move to the sunrise/set times of your current location - Toggle between 12 and 24 hours - Supports the Apple Watch - iPad multitasking (split-view) support

Screenshots

Mooncast4 screens
Sun Alarm4 screens

Verdict

The call

The clearest difference is review sentiment: Mooncast at 91% against Sun Alarm's 0%. Mooncast also leads on rating (4.8 vs 3.0) and update cadence (every 11 days vs every 3 months). Sun Alarm's advantage is price ($1.99 vs $3.99) and iOS requirement (15.6 vs 18.0). On ads and in-app purchases 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

Mooncast costs $3.99 and Sun Alarm $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Mooncast holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Mooncast has 3.6K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 91% of Mooncast's written reviews are positive against 0% of Sun Alarm's.

UpkeepUpdate frequency

Mooncast ships an update every 11 days, Sun Alarm every 3 months. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

Scorecard9 real differences · 2 level
Mooncast versus Sun Alarm: the parameters behind the verdict, then further details
ParameterMooncastSun Alarm
Price$3.99$1.99 — better
Rating4.8 (3.6K ratings) — better3.0 (2 ratings)
Positive reviews91.2% of reviews — better0.0% of reviews
Number of ratings3.6K — better2
Update frequencyEvery 11 days — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank#87 — better—
DevicesiPhone, iPad, Mac, Apple TV, Apple Watch — betteriPhone, iPad, iPod
Requires iOS18.015.6 — better
Further details — not scored
Size64 MB1 MB
Age rating4+4+
DeveloperMathieu RouthierPiet Jonas

Customer experience

Mooncast

All ratings3,631 ratings
Positive96.8%
Neutral1.8%
Negative1.4%
Written reviews307 reviews
Positive91.2%
Neutral2.6%
Negative6.2%

Sun Alarm

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Mooncast

Reported bugs

2 issues
  • 🐛 Alarms don't always work
  • 🐛 Incompatible with older devices

Requested features

4 requests
  • 💡 Show what zodiac sign the moon is in
  • 💡 Add moon rise and set times
  • 💡 Allow setting custom reminder times
  • 💡 Add a monthly calendar view

Sun Alarm

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Mooncast

No in-app purchases

None

Sun Alarm

No in-app purchases

Questions

Is Mooncast free?
Mooncast costs $3.99, with no in-app purchases.
Is Sun Alarm free?
Sun Alarm costs $1.99, with no in-app purchases.
Which has better reviews, Mooncast or Sun Alarm?
Mooncast is rated higher. Mooncast averages 4.8 out of 5 from 3.6K ratings, while Sun Alarm averages 3.0 from 2 ratings.
Do Mooncast or Sun Alarm have ads?
Neither Mooncast nor Sun Alarm shows ads.
Which is updated more often, Mooncast or Sun Alarm?
Mooncast ships an update every 11 days, and Sun Alarm every 3 months. Most recently, Mooncast was updated on October 30, 2026 and Sun Alarm on October 29, 2026.

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