Solar System Clock vs RGB Colour Tool
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
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.
- Planet and moon time displays
- Analog and digital clock formats
- Interactive solar system map
- Customizable widgets
- Planetary season information
- Time translation between celestial bodies
Read full descriptionHide 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.
RGB Colour Tool
Read full descriptionHide full description
RGB Colour Tool is a dynamic app which lets you play with values for red, green, and blue to generate a colour for your reference which can be copied as either a hex value or RGB value.
Screenshots
Verdict
The clearest difference is in-app purchases: RGB Colour Tool at none against Solar System Clock's 1. RGB Colour Tool also leads on iOS requirement (13 vs 18.0). Solar System Clock's advantage is update cadence (every 6 weeks vs every 7 months). On price, 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
Both are free to download. Solar System Clock sells 1 one-off in-app purchase. RGB Colour Tool asks for nothing beyond the download.
Solar System Clock ships an update every 6 weeks, RGB Colour Tool every 7 months. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.
| Parameter | Solar System Clock | RGB Colour Tool |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 6 weeks β better | Every 7 months |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Monetization | Free with in-app purchases | β |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 13 β better |
| Further details β not scored | ||
| Size | 26 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Sunita George | SAMUEL R HARVEY |
In-app purchases
Solar System Clock
- All Planets and Dwarf Planets$2.99
RGB Colour Tool
No in-app purchases
Questions
Is Solar System Clock free?
Is RGB Colour Tool free?
Do Solar System Clock or RGB Colour Tool have ads?
Which is updated more often, Solar System Clock or RGB Colour Tool?
Other comparisons















