SystemeSolaire vs Project Planet Space
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
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.
Project Planet Space
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Project Planet - an interactive map of our solar system How much would you weigh on Jupiter? Why does a day on Mercury last longer than its year? Project Planet turns space facts into a fingertip-sized journey. Scroll through all nine planets (Pluto included), feel each world's pull on your own body, and explore the numbers astronomers have spent decades collecting. Highlights - Sticky scroll across the system: from Mercury to Pluto, each planet stays centred long enough for you to take it in. - You, on every world: enter your weight and age once and watch them recalculated by each planet's gravity and orbital period. - Five rich widgets per planet: surface temperature with reference markers (Antarctica, freezing, boiling), atmospheric pressure with composition chart, travel times from Earth from walking up to the speed of light, gravitational force with everyday objects (phone, backpack, car), and an interactive pressure simulator with phase changes for water, oxygen, CO2, hydrogen, nitrogen and mercury (Antoine equation under the hood). - Six languages: Czech, English, German, Slovak, Spanish and French, auto-detected from your device. - Metric or imperial: switch instantly; weights, temperatures and distances follow your preference. - Crafted to feel like a small cosmic museum: dark cosmic theme, hand-tuned typography, subtle scroll choreography, and a right rail that lets you jump to any planet. - Built on real data: gravitational accelerations, orbital periods, NASA mean temperatures, atmospheric compositions and substance phase transitions. Requires an internet connection. The app runs as a continuously updated webview and uses native iOS capabilities such as haptic feedback to add a tactile dimension to your interstellar journey.
Screenshots
Verdict
The clearest difference is price: Project Planet Space at Free against SystemeSolaire's $1.99. Project Planet Space also leads on update cadence (every 25 months vs every 55 months). On ads, in-app purchases, device support and iOS requirement 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
Project Planet Space is free to download; SystemeSolaire costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SystemeSolaire ships an update every 55 months, Project Planet Space every 25 months. The most recent releases landed on September 17, 2026 and May 16, 2026 respectively.
| Parameter | SystemeSolaire | Project Planet Space |
|---|---|---|
| Price | $1.99 | Free β better |
| Update frequency | Every 55 months | Every 25 months β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 β better |
| Further details β not scored | ||
| Size | 596 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | NMS Narcisse Mavoha Solutions Sarl | Miroslav Hanzelka |
In-app purchases
SystemeSolaire
No in-app purchases
Project Planet Space
No in-app purchases
Questions
Is SystemeSolaire free?
Is Project Planet Space free?
Do SystemeSolaire or Project Planet Space have ads?
Which is updated more often, SystemeSolaire or Project Planet Space?
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