SaturnMoons vs SystemeSolaire
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SaturnMoons
Explore Saturn's rings and moons with this interactive guide. Pinpoint the location of its largest moons and step through time to see their future positions. Discover fascinating facts and images of Saturn's unique lunar family.
- Locate Saturn's nine largest moons
- Pinch-zoomable interface
- Local time synchronization
- Time controls (seconds, hours, days, years)
- Customizable telescope view
- Encyclopedia of Saturn's moons
- Stunning images of moons
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Let SaturnMoons guide you to observing Saturn’s complex system of rings and moons. Sky & Telescope’s latest app helps you locate Saturn’s nine largest moons with a pinch-zoomable interface set to your local time, guiding you to Saturn’s largest moon, Titan, or helping you try your luck with the fainter moons. The time controls allow you to step through the seconds or hours, or speed through days or even years to see where the moons will be down the line. And you can flip the view to customize what you see through your telescope. Plus, our full encyclopedia section contains fascinating entries and stunning images of Saturn’s bizarre lunar family. Learn more about Saturn’s “death star” moon, Mimas, two-faced Iapetus, and the salty ocean frothing beneath Enceladus’s surface. Please note: this application is designed to work in landscape orientation only so that you may view Saturn, Saturn’s rings, and the lunar family at their best.
SystemeSolaire
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The solar system is our planetary system, composed of a star, the Sun, and the defined celestial bodies orbiting it: the eight confirmed planets and their 175 known natural satellites, the five dwarf planets and the billions of small bodies and belts. This application puts the solar system at your fingertips. Click on a star or spacecraft to see its detailed information and a selection of videos chosen to shed light on important topics related to that star or spacecraft. This application is a concentrate of scientific knowledge of each celestial body of our solar system. This information is intended for a wide audience and no previous experience/knowledge is necessary. Are you curious? Well, you will be served. Do not hesitate to recommend this to your children, parents, friends, grandparents. There is something for everyone.
Screenshots
Verdict
The clearest difference is chart position: SaturnMoons at #197 against SystemeSolaire's unranked. SaturnMoons also leads on update cadence (every 26 months vs every 55 months) and iOS requirement (8.0 vs 15.6). SystemeSolaire's advantage is price ($1.99 vs $2.99). On ads, in-app purchases 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
SaturnMoons costs $2.99 and SystemeSolaire $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SaturnMoons ships an update every 26 months, SystemeSolaire every 55 months. Both last shipped on October 4, 2026.
| Parameter | SaturnMoons | SystemeSolaire |
|---|---|---|
| Price | $2.99 | $1.99 — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 26 months — better | Every 55 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #197 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 36 MB | 596 MB |
| Age rating | 4+ | 4+ |
| Developer | Guidebook Inc | NMS Narcisse Mavoha Solutions Sarl |
In-app purchases
SaturnMoons
No in-app purchases
SystemeSolaire
No in-app purchases








