Comparison

愛閱OnLine vs 天球模擬器

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

Head to head
About

愛閱OnLine

Features
Read full description

這是一款提供給教師批改的ApplePencil系統

About

天球模擬器

Features
Read full description

Astronomy Teaching System is an interactive application designed for learning and exploring basic astronomy. Through visual simulations, it helps users intuitively understand complex celestial geometry and the patterns of celestial motion. Core Features: • Celestial Sphere and Diurnal Motion Simulation: Observe the celestial coordinate system with support for toggling Right Ascension RA and Declination Dec grid lines. Users can freely adjust the observer's latitude 90°N to 90°S via a slider to see real-time changes in the starry sky and stellar tracks at different latitudes. • Dual Perspectives and Relative Motion: Provides Earth Rotation and Celestial Rotation modes, allowing you to thoroughly understand the principles of diurnal motion from different reference frames. You can tap stars on the screen to hide or show specific celestial bodies. • Solar Path through the Seasons: Explore the changing position of the sun on the ecliptic. Use an intuitive date slider 1/1 to 12/31 to observe changes in solar altitude angles and daylight tracks during the equinoxes and solstices. • Space and Earth Mode Toggle: In Space Mode, view Earth's orbital path and axial tilt in the solar system from a bird's-eye perspective. In Earth Mode, view the daily solar path in the local sky from an observer's first-person perspective. • Rotation and Revolution Control: Supports independent toggling of Earth's rotation and revolution, with an acceleration feature for quick demonstrations of long-term astronomical changes. This application offers intuitive touch-to-zoom and perspective adjustment features, making it an ideal supplementary learning tool for students, educators, and astronomy enthusiasts.

Screenshots

天球模擬器4 screens

Verdict

The call

The clearest difference is update cadence: 天球模擬器 at every 3 days against 愛閱OnLine's fortnightly. 天球模擬器 also leads on device support (3 vs 1). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

愛閱OnLine ships an update fortnightly, 天球模擬器 every 3 days. The most recent releases landed on October 3, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 4 level
愛閱OnLine versus 天球模擬器: the parameters behind the verdict, then further details
Parameter愛閱OnLine天球模擬器
PriceFreeFree
Update frequencyFortnightlyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPadiPhone, iPad, iPod — better
Requires iOS13.013.0
Further details — not scored
Size4 MB19 MB
Age rating4+4+
DeveloperSHI EN LUHan-Chiang Chou

In-app purchases

None

愛閱OnLine

No in-app purchases

None

天球模擬器

No in-app purchases

Questions

Is 愛閱OnLine free?
愛閱OnLine is free to download, with no in-app purchases.
Is 天球模擬器 free?
天球模擬器 is free to download, with no in-app purchases.
Do 愛閱OnLine or 天球模擬器 have ads?
Neither 愛閱OnLine nor 天球模擬器 shows ads.
Which is updated more often, 愛閱OnLine or 天球模擬器?
愛閱OnLine ships an update fortnightly, and 天球模擬器 every 3 days. Most recently, 愛閱OnLine was updated on October 3, 2026 and 天球模擬器 on October 16, 2026.

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