Comparison

天球模擬器 vs Kanso

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

Head to head
About

天球模擬器

Features
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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.

About

Kanso

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数直線を、そのまま宇宙にしました。 Kanso - Integers は「整数1 = 1km」の世界です。0 から出発して指でスクロールすると、 149,600,000 で地球に、1,433,500,000 で土星に出会います。数字の並びはやがて太陽系全景になり、 天の川の腕になり、銀河団になり、6,000,000,000 を超えた先は観測可能な宇宙の大規模構造へ。 ズームもスワイプも、地図アプリのように直感的です。 ■ 整数の雑学 素数・完全数・フィボナッチ数……気になる数に止まると、その数の性質と物語が1枚のカードで 現れます。約数・素因数分解は全整数で自動計算。自分だけのメモも残せます。 ■ 実在の天体 地球・火星・木星などの惑星は NASA の実観測画像による全球テクスチャで、実距離の整数の座に 実寸で置かれています。天体データ・出典もアプリ内に明記。 ■ 数のゲームで遊んで、カードを集める ゴールドバッハの結晶、ユークリッド・タイリング、プライムキー、GCDトラップ、 コプライムリング、ファクターショック。遊ぶほど宇宙図鑑に天体カードが増えていきます。 集めたカードは美しいトレーディングカード画像・回転する3D動画として共有できます。 ■ 完全無料・広告なし 課金も広告も分析SDKもありません。記録はあなたの端末と iCloud(非公開領域)だけに保存され、 iPhone と iPad で同期します。 数って、こんなに遠くまで続いてるんだ—— そのスケール感を、あなたの指で確かめてください。

Screenshots

天球模擬器4 screens
Kanso4 screens

Verdict

The call

The clearest difference is iOS requirement: 天球模擬器 at 13.0 against Kanso's 17.0. On price, update cadence, ads and in-app purchases 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

天球模擬器 ships an update every 3 days, Kanso every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 5 level
天球模擬器 versus Kanso: the parameters behind the verdict, then further details
Parameter天球模擬器Kanso
PriceFreeFree
Update frequencyEvery 3 days — betterEvery 4 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size19 MB68 MB
Age rating4+4+
DeveloperHan-Chiang ChouYutaro Kawahara

In-app purchases

None

天球模擬器

No in-app purchases

None

Kanso

No in-app purchases

Questions

Is 天球模擬器 free?
天球模擬器 is free to download, with no in-app purchases.
Is Kanso free?
Kanso is free to download, with no in-app purchases.
Do 天球模擬器 or Kanso have ads?
Neither 天球模擬器 nor Kanso shows ads.
Which is updated more often, 天球模擬器 or Kanso?
天球模擬器 ships an update every 3 days, and Kanso every 4 days. Most recently, 天球模擬器 was updated on October 25, 2026 and Kanso on October 24, 2026.

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