Comparison

Universe Size Comparison vs Kids Solar System Adventure

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

Head to head
About

Universe Size Comparison

Explore the vastness of space and understand celestial body dimensions through interactive 3D comparisons. Discover the scale of planets and stars, from our Sun to hypergiant stars, with guided tours and free comparison modes.

Highlights
  • 3D astronomical comparisons
  • Tour Mode with guided explanations
  • Free Mode for custom comparisons
  • Scale comparisons of planets and stars
  • Detailed celestial body information
  • Elegant user interface
Features
Read full description

Universe Size Comparison is a unique 3D astronomical app that will make you understand the real dimensions of the universe and how small we are. Have you ever wondered how big the Sun is compared to Earth? Or what is the largest planet between Mars and Earth? Do you want to find out the dimensions of some of the most famous stars in the sky like Rigel and Betelgeuse in comparison to our Sun? Do you want to compare everything with the hypergiant star VY Canis Majoris? Universe Size Comparison is the right app for you. The app offers two modes: Tour Mode and Free Mode. Tour mode will guide you on a spectacular journey where you will see planets and stars compared in full scale. All accompanied by simple and clear explanations regardless of the level of knowledge of the subject. The Free mode will allow you to compare two celestial bodies of your choice in scale. You will also find out more information on the bodies you are comparing thanks to an elegant user interface designed to offer the maximum user experience.

About

Kids Solar System Adventure

This educational game introduces young children to the solar system through interactive play. It helps toddlers learn planet names, spelling, and alphabets in multiple languages. The app features puzzles, sound effects, and customizable reading speeds for an engaging learning experience.

Highlights
  • Learn planet names and spelling
  • Multilingual support (6 languages)
  • Interactive planet puzzles
  • Real sound effects
  • Customizable reading speed
  • Decorate planets
Features
Read full description

Kids Solar System - Toddlers is a simple and exciting learning game for young children. It will introduce the amazing Solar System of our universe to your baby, with the educational process being funny and excessively interesting. With no effort, toddlers will learn to recognize the planets with their names, and how to spell and learn the alphabets. This application is designed to teach your child while you stay home. Advantages of the Game: - The game will easily teach your child planets. The planets are illustrated in such a way that they take interest in learning and interacting with them. - The planets are named in six (6) languages: English, French, German, Italian, Japanese and Spanish. This allows the kid to learn over 30 foreign words, which will be very useful for the further study of the languages. Each word is pronounced clearly and distinctly along with how to spell them. -Your child will get to form the planets by playing a puzzle game. This enables them to improve their cognitive skills along with improvement to their problem solving skills. - Each planet comes with real sound effects whereby your kid will be able stay focused and entertained. The learning, which engages more senses, will make the development of their brain ever faster. - A fascinating outer space like environment is set up by introducing spacecrafts and many more around the planets letting your child to interact with the planet. The funny squeaking sounds along with the giggles made by the planets with their sounds brighten up the game to keep your child encouraged to learn. - Your child is taught how to form words by reading out letters one by one. When the name of the planet is formed they are spelt and read for your child. The App is designed in such a way that your child can learn by themselves or better yet with parental guidance while staying home. Keep your child ahead of learning. - Parents can control the speed of reading. As the child improves you can turn off the hint and increase the speed. Small kids often have troubles identifying and naming planets. The game allows the preschooler to learn their planets. The best way to help them remember the new information is through playing games and using the interactive planets. A great idea for parents would be to speak out the names of the object seen on the screen. You can even let them learn the small objects that appear along with each planet. Such training can contribute to the cognitive development of your child by improving your child’s memory and logical thinking along with the vocabulary. We have crafted the Toddlers Solar system application in such a way that interacting with devices can be positive experience. Introduce your child for a very early learning experience. Make your child to be at the forefront of what the world has to offer them. Features -6 Languages for your loved one to learn from. -Settings to change spelling speed. -Decorate your planets -Play a simple puzzle games -Learn letters -Learn word formation -Perfect for 2 – 4 year olds Our team of designers and developers create apps that have great value for children, something that they will love and parents trust. We build Apps by studying children to blend the apps into their natural learning and entertaining curves. Toddlers Solar system learning App is the ideal first app for your loved one.

Screenshots

Universe Size Comparison4 screens
Kids Solar System Adventure4 screens

Verdict

The call

The clearest difference is rating: Kids Solar System Adventure at 3.8 against Universe Size Comparison's 3.1. Kids Solar System Adventure also leads on update cadence (every 2 weeks vs every 4 months) and iOS requirement (10.0 vs 13.0). Universe Size Comparison's advantage is review sentiment (67% vs 50%) and ratings volume (29 vs 5). On ads, in-app purchases, monetization model 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

Universe Size Comparison costs $1.99 and Kids Solar System Adventure $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Kids Solar System Adventure holds the better App Store score, 3.8 against 3.1. That said, the two scores are not equally well evidenced: Universe Size Comparison has 29 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 67% of Universe Size Comparison's written reviews are positive against 50% of Kids Solar System Adventure's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Universe Size Comparison ships an update every 4 months, Kids Solar System Adventure every 2 weeks. The most recent releases landed on September 15, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 4 level
Universe Size Comparison versus Kids Solar System Adventure: the parameters behind the verdict, then further details
ParameterUniverse Size ComparisonKids Solar System Adventure
Price$1.99 — better$3.99
Rating3.1 (29 ratings)3.8 (5 ratings) — better
Positive reviews66.7% of reviews — better50.0% of reviews
Number of ratings29 — better5
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad, iPod
Requires iOS13.010.0 — better
Further details — not scored
Size411 MB97 MB
Age rating4+4+
DeveloperDaniele CitiAmeer Moosa

Customer experience

Universe Size Comparison

All ratings29 ratings
Positive44.8%
Neutral20.7%
Negative34.5%
Written reviews9 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

Kids Solar System Adventure

All ratings5 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Universe Size Comparison

No in-app purchases

None

Kids Solar System Adventure

No in-app purchases

Questions

Is Universe Size Comparison free?
Universe Size Comparison costs $1.99, with no in-app purchases.
Is Kids Solar System Adventure free?
Kids Solar System Adventure costs $3.99, with no in-app purchases.
Which has better reviews, Universe Size Comparison or Kids Solar System Adventure?
Kids Solar System Adventure is rated higher. Universe Size Comparison averages 3.1 out of 5 from 29 ratings, while Kids Solar System Adventure averages 3.8 from 5 ratings.
Do Universe Size Comparison or Kids Solar System Adventure have ads?
Neither Universe Size Comparison nor Kids Solar System Adventure shows ads.
Which is updated more often, Universe Size Comparison or Kids Solar System Adventure?
Universe Size Comparison ships an update every 4 months, and Kids Solar System Adventure every 2 weeks. Most recently, Universe Size Comparison was updated on September 15, 2026 and Kids Solar System Adventure on September 23, 2026.

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