Comparison

Astris vs Solar System&Celestial Objects

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

Head to head

Solar System&Celestial Objects

Solar System Stars Flashcard

Free

📚 Education

No ratingsView app →

About

Astris

Features

Read full description

This app allows to you discover our solar system with every planet, moons and asteroids and add it to your favorites. You will be able to have a 3d experience with the planets and the sun. Every text is accessible thanks to the speak screen.

About

Solar System&Celestial Objects

Features

Read full description

Easy learning about solar system, stars, celestial objects, constellations, spacecraft with pictures ,sounds and quiz games. If you who always search and learn a quiz app like these, this app is for you ① Solar system Flash card app. ② Stars Quiz app. ③ Celestial objects quiz app. ④ Stars history and information app. ⑤ Constellations name cards. ⑥ Guess solar system app. Features: - You can learn many kinds of stars. - You can play solar system quiz. - Many information related to solar system, stars, celestial objects, constellations, spacecraft - Support Quiz feature. - Support 5 languages: English, Japanese, Korean, Chinese, Vietnamese

Screenshots

Astris4 screens

Solar System&Celestial Objects4 screens

Verdict

The call

The clearest difference is ads: Astris at none against Solar System&Celestial Objects's shown. Solar System&Celestial Objects's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, 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

Astris ships an update every 3 months, Solar System&Celestial Objects every 6 weeks. The most recent releases landed on September 27, 2026 and September 14, 2026 respectively.

Scorecard2 real differences · 4 level

Astris versus Solar System&Celestial Objects: the parameters behind the verdict, then further details
Parameter	Astris	Solar System&Celestial Objects
Price	Free	Free
Update frequency	Every 3 months	Every 6 weeks — better
Ads	No — better	Yes
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	15.0	12.0 — better
Further details — not scored
Size	21 MB	62 MB
Age rating	4+	4+
Developer	ISTITUTI EDMONDO DE AMICIS SRL	NIKI TECH

In-app purchases

None

Astris

No in-app purchases

None

Solar System&Celestial Objects

No in-app purchases

Questions

Is Astris free?

Astris is free to download, with no in-app purchases.

Is Solar System&Celestial Objects free?

Solar System&Celestial Objects is free to download, with no in-app purchases.

Do Astris or Solar System&Celestial Objects have ads?

Solar System&Celestial Objects shows ads; Astris does not.

Which is updated more often, Astris or Solar System&Celestial Objects?

Astris ships an update every 3 months, and Solar System&Celestial Objects every 6 weeks. Most recently, Astris was updated on September 27, 2026 and Solar System&Celestial Objects on September 14, 2026.