Planet vs Project Planet Space
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planet
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This App gives details about temperatures in our solar system. Beside the theoretical temperature the app will show actual facts about each planet like the albedo, temperature, average distance to sun and details about the atmosphere. It is specially programmed to help understanding the climates in our solar system and is helpfull for students, schools and teaching.
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 update cadence: Planet at every 3 weeks against Project Planet Space's every 25 months. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Planet ships an update every 3 weeks, Project Planet Space every 25 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Planet | Project Planet Space |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks — better | Every 25 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | David Borgelt | Miroslav Hanzelka |
In-app purchases
Planet
No in-app purchases
Project Planet Space
No in-app purchases
Questions
Is Planet free?
Is Project Planet Space free?
Do Planet or Project Planet Space have ads?
Which is updated more often, Planet or Project Planet Space?
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