Comparison

Solar System Clock vs Ringy Alarm

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

Head to head
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.Β 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.

About

Ringy Alarm

Features
Read full description

Ever set an alarm at 2 AM and found yourself doing the mental math to figure out exactly how many hours of sleep you have left? Ringy Alarm fixes that. Built by an independent mobile developer who missed this exact feature, Ringy Alarm is a lightweight, full-featured alarm app designed around one critical addition: a live countdown widget right on your lock screen and home screen. At a single glance, you’ll see the exact hours and minutes remaining before your alarm goes off. No math, no guessing, just peace of mind. Features: β€’ Live countdown widgets: Keep track of your remaining sleep time directly from your lock screen or home screen. β€’ Privacy-first design: The app is entirely frontend-driven. It requires no internet connection, uses zero trackers, collects no data, and serves no ads. Your data never leaves your device. β€’ Multilingual support: Ringy Alarm automatically detects your device's default language for a seamless setup, but gives you the full freedom to switch it manually in the options menu. β€’ Custom audio tracks: Wake up to custom alarm sounds generated using Suno AI music technology. β€’ High test coverage: Built with clean code standards and backed by a 96% test coverage to ensure reliability when you need it most. Ringy Alarm is completely free to use with no annoying subscription pop-ups or hidden paywalls. A 'Buy Me a Coffee' option is available inside if you’d like to support an indie developer covering Apple fees and assets, but there is absolutely no obligation. Download Ringy Alarm today and get a better view of your time.

Screenshots

Solar System Clock4 screens
Ringy Alarm4 screens

Verdict

The call

The clearest difference is in-app purchases: Ringy Alarm at none against Solar System Clock's 1. On price, update cadence, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Solar System Clock ships an update every 6 weeks, Ringy Alarm monthly. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

Scorecard1 real difference Β· 7 level
Solar System Clock versus Ringy Alarm: the parameters behind the verdict, then further details
ParameterSolar System ClockRingy Alarm
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 6 weeksMonthly β€” better
AdsNoNo
In-app purchasesYesNo β€” better
MonetizationFree with in-app purchasesβ€”
DevicesiPhone, iPad, Apple Watch β€” betteriPhone, iPad
Requires iOS18.018.0
Further details β€” not scored
Size26 MB35 MB
Age rating4+17+
DeveloperSunita GeorgeELYES SELLAMI

In-app purchases

1 purchases

Solar System Clock

One-time1
  • All Planets and Dwarf Planets$2.99
None

Ringy Alarm

No in-app purchases

Questions

Is Solar System Clock free?
Solar System Clock is free to download, with in-app purchases available.
Is Ringy Alarm free?
Ringy Alarm is free to download, with no in-app purchases.
Do Solar System Clock or Ringy Alarm have ads?
Neither Solar System Clock nor Ringy Alarm shows ads.
Which is updated more often, Solar System Clock or Ringy Alarm?
Solar System Clock ships an update every 6 weeks, and Ringy Alarm monthly. Most recently, Solar System Clock was updated on October 15, 2026 and Ringy Alarm on October 14, 2026.

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