Comparison

Planet simulation vs Portal

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

Head to head
About

Planet simulation

Design and build your own solar system with various stars. Explore the fascinating world of gravity and recreate celestial bodies. A relaxing game for your spare time.

Highlights
  • Create your own solar system
  • Simulate gravity
  • Design with various stars
  • Reproduce celestial bodies
  • Relaxing gameplay
Features
Read full description

Enjoy world of gravity! Planet simulation game can also reproduce solar system. Create the universe with various stars. You may be able to recreate the solar system. In spare time or boring time, it is a recommended game. This game is the 2nd iOS game for the Web Game Site "DAN-BALL"

About

Portal

Engage in a physics-based puzzle adventure across numerous test chambers. Each level presents unique objectives to challenge your problem-solving skills in this addictive game.

Highlights
  • Physics-based gameplay
  • Multiple test chambers
  • Varied level objectives
  • Addictive puzzle solving
Features
Read full description

Loosely base on the game Portal by Valve, this fun and addicting physics game takes you through many levels of test chambers, each with a different objective.

Screenshots

Planet simulation4 screens
Portal4 screens

Verdict

The call

The clearest difference is in-app purchases: Planet simulation at none against Portal's 4. Planet simulation also leads on review sentiment (74% vs 55%) and ratings volume (165 vs 50). Portal's advantage is ads (none vs shown) and update cadence (monthly vs every 8 months). On price, rating, device support and iOS requirement 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. Portal sells 4 one-off in-app purchases. Planet simulation asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.9 for Planet simulation against 3.9 for Portal. Both are backed by a comparable volume of ratings — 165 and 50 respectively. Written reviews are what separate them: 74% of Planet simulation's written reviews are positive against 55% of Portal's.

UpkeepUpdate frequency

Planet simulation ships an update every 8 months, Portal monthly. The most recent releases landed on October 22, 2026 and October 23, 2026 respectively.

Scorecard6 real differences · 4 level
Planet simulation versus Portal: the parameters behind the verdict, then further details
ParameterPlanet simulationPortal
PriceFreeFree
Rating3.9 (165 ratings) — better3.9 (50 ratings)
Positive reviews74.3% of reviews — better54.7% of reviews
Number of ratings165 — better50
Update frequencyEvery 8 monthsMonthly — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size15 MB24 MB
Age rating4+4+
DeveloperDAN-BALLCharles Younger

Customer experience

Planet simulation

All ratings165 ratings
Positive72.1%
Neutral6.1%
Negative21.8%
Written reviews346 reviews
Positive74.3%
Neutral9.0%
Negative16.8%

Portal

All ratings50 ratings
Positive72.0%
Neutral8.0%
Negative20.0%
Written reviews53 reviews
Positive54.7%
Neutral3.8%
Negative41.5%

User reviews

Planet simulation

From 165 App Store ratings

What we love

  • 🚀 Realistic gravity simulation
  • 👍 Fun to mess around with
  • 🎨 Visually appealing
  • 🤖 Good for learning about planetary motion

Room to improve

  • 🐛 Planets often crash into the sun
  • 🔍 Limited features and customization options
  • 📢 Distracting ads
  • 🤯 Confusing controls and UI

Portal

From 50 App Store ratings

What we love

  • 👍 Great for Portal fans
  • 💡 Fun puzzle action
  • 🚀 Good for iPhone
  • ✨ Simple but good
  • 🎮 Challenging physics

Room to improve

  • 😕 Not fun at all
  • 🐛 Glitches on some levels
  • 🤔 Choppy graphics
  • 📉 Too hard too quickly
  • 😵 Repetitive gameplay

Bugs and requests

Planet simulation

Reported bugs

3 issues
  • Planets sometimes disappear or behave erratically
  • App crashes or freezes occasionally
  • Scaling and scrolling issues

Requested features

5 requests
  • Add more celestial objects (black holes, supernovas, etc.)
  • Allow for more complex orbits and binary systems
  • Implement a save/load feature for solar systems
  • Add a tutorial or help section
  • Integrate with educational resources on astronomy

Portal

Reported bugs

9 issues
  • Platform moves with button click
  • Seesaw puzzle impossible
  • Companion cube moves with platform
  • Blue portal not movable
  • Game won't open level one
Show 4 more
  • Can't click on levels
  • Doesn't display correctly on iPhone 4
  • Stuck on scene 2 level 13
  • Some buttons don't work

Requested features

6 requests
  • Add Portal music
  • Animate thrown objects
  • Thin the turret
  • Update the game
  • Allow turning iPhone to control ball
Show 1 more
  • Add actual Portal button sound

In-app purchases

None

Planet simulation

No in-app purchases

4 purchases

Portal

One-time4
  • Tip the Developer - Small Tip$0.99
  • Tip the Developer - Nice Tip!$1.99
  • Tip the Developer - Generous Tip!$4.99
Show 1 more
  • Tip the Developer - Amazing Tip!$9.99

Questions

Is Planet simulation free?
Planet simulation is free to download, with no in-app purchases.
Is Portal free?
Portal is free to download, with in-app purchases available.
Which has better reviews, Planet simulation or Portal?
Planet simulation is rated higher. Planet simulation averages 3.9 out of 5 from 165 ratings, while Portal averages 3.9 from 50 ratings.
Do Planet simulation or Portal have ads?
Planet simulation shows ads; Portal does not.
Which is updated more often, Planet simulation or Portal?
Planet simulation ships an update every 8 months, and Portal monthly. Most recently, Planet simulation was updated on October 22, 2026 and Portal on October 23, 2026.

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