Comparison

MAX Daylight vs Solar System Clock

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

Head to head
About

MAX Daylight

Track remaining daylight and receive sunset notifications. Explore solar data globally, compare locations, and generate reports. Calculate distances to the Equator and poles.

Highlights
  • Real-time sunset time
  • Sunset notifications
  • Global sunrise/sunset monitoring
  • Location comparison
  • Distance to Equator/Poles
  • Solar data reports
Features
Read full description

I wrote this app to help me get home before dark while riding my bicycle. You can see at a glance how much time until sunset, and set notifications for when you are running out of sunlight. Your loved ones will no longer worry or complain. Then I added everything solar but the kitchen sink, just for fun. Not only for your current location, you can monitor sunrise, noon, and sunset anywhere on Earth. You can compare locations, make movies, and generate reports comparing a location you select to places around the globe. Check the distance to your location, the Equator, and the North or South Pole from anywhere on Earth. Quick and easy for its headline purpose, but enough detail to satisfy almost any nerd. Most of the USA is far enough north to have little sunlight in mid-winter, rapid changes in the amount of sunlight in spring and fall, and a glorious abundance in summer. You need this app to keep on top of all that.

About

Solar System Clock

Explore the time and positions of celestial bodies across our solar system. View analog and digital clocks for planets, dwarf planets, and moons, with interactive maps and customizable widgets. Understand planetary seasons and translate times between objects.

Highlights
  • Planet and moon time displays
  • Analog and digital clock formats
  • Interactive solar system map
  • Customizable widgets
  • Planetary season information
  • Time translation between celestial bodies
Features
Read full description

No AI was used in the making of this app, including code and visual assets. The app comes with the Earth and Mars clocks free of charge (including associated moons), and additional planet clocks can be purchased through the app or the App Store. The purchase also includes the new customisable widgets and the current and past positions of supported objects. Did you ever want to know the time on Saturn? The simple Solar System Clock can tell the time on any planet or dwarf planet, and the Sun in relation to Earth time. Calculated from the starting date of the Gregorian calendar, the app displays seconds, minutes, hours, days and years for each object based on orbit and rotation data. The time is given in both analog and digital formats and can be stopped and restarted for easy viewing, while keeping to the accurate localised time. A single analog clock face for all planets and dwarf planets is also included, and can be split into two clocks for main planets and dwarf planets. Times can be freely translated between planets, the Sun and moons. The app also provides the current and past positions of the planets, moons and dwarf planets to scale in the form of an interactive map, and the seasons on every planet and dwarf planet. A widget form of the Earth and Mars clocks is provided for circular widget slots on Apple Watch, and widgets on other supported devices can be customised within the app. An iMessage extension is also included to enable easy communication using the time systems. The main clock can also be projected as functional wall art.

Screenshots

MAX Daylight4 screens
Solar System Clock4 screens

Verdict

The call

The clearest difference is in-app purchases: MAX Daylight at none against Solar System Clock's 1. MAX Daylight also leads on update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (15.6 vs 18.0). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Solar System Clock sells 1 one-off in-app purchase. MAX Daylight asks for nothing beyond the download.

UpkeepUpdate frequency

MAX Daylight ships an update every 2 weeks, Solar System Clock every 6 weeks. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 6 level
MAX Daylight versus Solar System Clock: the parameters behind the verdict, then further details
ParameterMAX DaylightSolar System Clock
PriceFreeFree
Rating4.9 (63 ratings) — better—
Positive reviews93.8% of reviews100.0% of reviews — better
Number of ratings63 — better—
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.6 — better18.0
Further details — not scored
Size32 MB26 MB
Age rating4+4+
DeveloperStephen MykytynSunita George

Customer experience

MAX Daylight

All ratings62 ratings
Positive98.4%
Neutral0.0%
Negative1.6%
Written reviews16 reviews
Positive93.8%
Neutral0.0%
Negative6.3%

Solar System Clock

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

MAX Daylight

No in-app purchases

1 purchases

Solar System Clock

One-time1
  • All Planets and Dwarf Planets$2.99

Questions

Is MAX Daylight free?
MAX Daylight is free to download, with no in-app purchases.
Is Solar System Clock free?
Solar System Clock is free to download, with in-app purchases available.
Do MAX Daylight or Solar System Clock have ads?
Neither MAX Daylight nor Solar System Clock shows ads.
Which is updated more often, MAX Daylight or Solar System Clock?
MAX Daylight ships an update every 2 weeks, and Solar System Clock every 6 weeks. Most recently, MAX Daylight was updated on October 23, 2026 and Solar System Clock on October 15, 2026.

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