Comparison

iStellar vs 学生ウォーカー

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

Head to head
About

iStellar

Explore the cosmos with a realistic planetarium experience. View the night sky from any location and time, with detailed celestial bodies and dynamic simulations. Intuitive multi-touch controls make navigation effortless.

Highlights
  • Real-time starry sky simulation
  • Adjustable location and time
  • Detailed celestial object data
  • Intuitive multi-touch controls
  • Solar eclipse simulation
  • Object search function
Features
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iStellar is a planetarium App that shows the starry sky seen from the place and time of your choice. It is optimized for Multi-Touch control, allowing you to operate intuitively; drag to move the star chart, pinch to zoom in and out, and so on. The star chart can be rotated from portrait to landscape, and you can even fix the location via GPS (only for iPhone 3G). FEATURES - Over 16,000 star data, with name for 254 stars - Twinkles like actual stars - Simulates distortion (atmospheric refraction and extinction) at low altitude - Displays the Sun, daylight, twilight, the Moon (with shape and phase), 8 planets, Pluto - Shows name, line and picture for all constellations - Milky Way with real tone - Plots Messier objects and their names - Comets with accurate position and magnitude. Data can be downloaded whenever available - Meteor Shower Radiants - Solar eclipse simulation with high accuracy - Adjustable moonlight and light polution - Landscape and azimuth / direction grid - Beautiful animation (real-time, adjusted time, reversal) - Simulates every second between 1 Jan 1900 to 31 Dec 2099 - Switches screen according to the device's orientation - Zoom by pinching(3 to 180 degrees) - Easy moving through the sky by dragging, and centering by double-tap - Object Search function - Free choice of location and time zone, instant setting with GPS

About

学生ウォーカー

Features
Read full description

◆◇◆◇◆◇◆◇◆◇◆◇ 受験生・新入生向けサイト”学生ウォーカー”のアプリ版です。 東京・首都圏の大学・専門学校の進学情報から、お部屋探しまでを完全サポート! ◆◇◆◇◆◇◆◇◆◇◆◇ ▼機能 - 東京・首都圏にある大学・専門学校別に、学部学科情報、奨学金情報など、受験や進学に役立つデータを閲覧できます。 - 学校までの通学時間でお部屋探しが可能です。もちろん、路線や駅、希望条件からでもお部屋を検索できます。 - 学生が選ぶお部屋ランキングや、学生との交流会レポートなど、学校ごとのコンテンツも充実! ▼価格 アプリ本体はもちろん、閲覧・お問い合わせまですべて無料でご利用頂けます。 ※アプリのダウンロードや使用時にはインターネット接続が必要となります。その際の通信料はお客様のご負担となります。

Screenshots

iStellar4 screens
学生ウォーカー4 screens

Verdict

The call

The clearest difference is price: 学生ウォーカー at Free against iStellar's $3.99. iStellar's advantage is ads (none vs shown) and update cadence (every 3 months vs every 12 months). On in-app purchases, device support 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

学生ウォーカー is free to download; iStellar costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

iStellar ships an update every 3 months, 学生ウォーカー every 12 months. The most recent releases landed on November 13, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 7 level
iStellar versus 学生ウォーカー: the parameters behind the verdict, then further details
ParameteriStellar学生ウォーカー
Price$3.99Free — better
Rating4.0 (1 ratings) — better—
Positive reviews49.3% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 months — betterEvery 12 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.412.0 — better
Further details — not scored
Size37 MB1 MB
Age rating4+4+
DeveloperAstroArts Inc.タウン情報サービス

In-app purchases

None

iStellar

No in-app purchases

None

学生ウォーカー

No in-app purchases

Questions

Is iStellar free?
iStellar costs $3.99, with no in-app purchases.
Is 学生ウォーカー free?
学生ウォーカー is free to download, with no in-app purchases.
Do iStellar or 学生ウォーカー have ads?
学生ウォーカー shows ads; iStellar does not.
Which is updated more often, iStellar or 学生ウォーカー?
iStellar ships an update every 3 months, and 学生ウォーカー every 12 months. Most recently, iStellar was updated on November 13, 2026 and 学生ウォーカー on November 6, 2026.

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