Comparison

Sunlight Hours 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

Sunlight Hours

More about our solar system

Free

📚 Education

No ratingsView app →

Solar System&Celestial Objects

Solar System Stars Flashcard

Free

📚 Education

No ratingsView app →

About

Sunlight Hours

Features

Read full description

- This shows daylight hours in any latitude on any given day - You can also see some information about each planet in our solar system

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

Sunlight Hours4 screens

Solar System&Celestial Objects4 screens

Verdict

The call

The clearest difference is in-app purchases: Solar System&Celestial Objects at none against Sunlight Hours's 7. Solar System&Celestial Objects also leads on iOS requirement (12.0 vs 16.6). Sunlight Hours's advantage is update cadence (every 3 days vs every 6 weeks). On price, ads 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. Sunlight Hours sells 7 one-off in-app purchases. Solar System&Celestial Objects asks for nothing beyond the download.

UpkeepUpdate frequency

Sunlight Hours ships an update every 3 days, Solar System&Celestial Objects every 6 weeks. The most recent releases landed on October 17, 2026 and October 2, 2026 respectively.

Scorecard3 real differences · 3 level

Sunlight Hours versus Solar System&Celestial Objects: the parameters behind the verdict, then further details
Parameter	Sunlight Hours	Solar System&Celestial Objects
Price	Free	Free
Update frequency	Every 3 days — better	Every 6 weeks
Ads	Yes	Yes
In-app purchases	Yes	No — better
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	16.6	12.0 — better
Further details — not scored
Size	44 MB	62 MB
Age rating	17+	4+
Developer	NovaNext	NIKI TECH

In-app purchases

7 purchases

Sunlight Hours

One-time7

Coffee$0.99
Remove Ads$0.99
Donate $3$2.99

Show 4 more

Donate $5$4.99
Donate $10$9.99
Donate $15$14.99
Donate $20$19.99

None

Solar System&Celestial Objects

No in-app purchases

Questions

Is Sunlight Hours free?

Sunlight Hours is free to download, with in-app purchases available.

Is Solar System&Celestial Objects free?

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

Do Sunlight Hours or Solar System&Celestial Objects have ads?

Both Sunlight Hours and Solar System&Celestial Objects show ads.

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

Sunlight Hours ships an update every 3 days, and Solar System&Celestial Objects every 6 weeks. Most recently, Sunlight Hours was updated on October 17, 2026 and Solar System&Celestial Objects on October 2, 2026.