Comparison

Project Planet Space vs 3D Star Map

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

Head to head
About

Project Planet Space

Features
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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.

About

3D Star Map

Explore over 700 stars in our local star cluster in a 3D space simulation. Zoom, rotate, and learn about neighboring star systems with detailed information available on tap. Perfect for research or satisfying cosmic curiosity.

Highlights
  • 3D space exploration
  • Over 700 local stars
  • Detailed star information
  • Zoom, rotate, and move
  • Relaxing animations
  • Educational content
Features
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Explore the local cluster with over 700 stars around our Sun! Zoom, rotate, and move through the 3D space surrounding our solar system, and learn about our neighboring star systems. Tap on a star for detailed information about it, or just wander through space with beautiful and relaxing animations. Whether you're using it for research or just to feed your insatiable curiosity, the 3D Star Map is here to help you learn more about our place in the universe!

Screenshots

Project Planet Space4 screens
3D Star Map4 screens

Verdict

The call

The clearest difference is update cadence: 3D Star Map at every 2 weeks against Project Planet Space's every 25 months. 3D Star Map also leads on iOS requirement (12.0 vs 15.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Project Planet Space ships an update every 25 months, 3D Star Map every 2 weeks. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 8 level
Project Planet Space versus 3D Star Map: the parameters behind the verdict, then further details
ParameterProject Planet Space3D Star Map
PriceFreeFree
Rating—4.4 (9 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—9 — better
Update frequencyEvery 25 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size2 MB100 MB
Age rating4+4+
DeveloperMiroslav HanzelkaAlexander Winn

In-app purchases

None

Project Planet Space

No in-app purchases

None

3D Star Map

No in-app purchases

Questions

Is Project Planet Space free?
Project Planet Space is free to download, with no in-app purchases.
Is 3D Star Map free?
3D Star Map is free to download, with no in-app purchases.
Do Project Planet Space or 3D Star Map have ads?
Neither Project Planet Space nor 3D Star Map shows ads.
Which is updated more often, Project Planet Space or 3D Star Map?
Project Planet Space ships an update every 25 months, and 3D Star Map every 2 weeks. Most recently, Project Planet Space was updated on September 30, 2026 and 3D Star Map on October 2, 2026.

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