iStellar Downloads & RevenueiStellar · App Store
iStellar is #25 in Navigation Paid in Japan and charting in 8 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
24 Sep 2026Full timeline · 9 events in the last 12 months
- 📈iStellar charting in a new countryAustralia
- 📈iStellar entered the top 100Top Paid · Navigation · US
- 📈iStellar charting in a new countryUnited States
- 📈iStellar entered the top 100Top Grossing · Navigation · JP
- 📈iStellar entered the top 10Top Paid · Navigation · JP
- 📈iStellar charting in a new country in 2 chartsChina · Russia
- 🆕iStellar first spotted by AppInsider#61 in Top Paid · Navigation · Italy
- 🆕iStellar: its developer released another app: ステラナビゲータ
- 🆕iStellar released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Navigation PaidiStellar at a glance
AI summary written from our chart and store data, 2026-10-25. It can be wrong: check the numbers above.
iStellar is a paid planetarium application for iOS that provides detailed star charts, celestial object data, and sky simulations for amateur astronomers and stargazers. The app currently holds the #3 position in Japan's paid Navigation category, indicating strong regional traction despite limited visibility in other major markets like Italy and Brazil.
Similar apps: SkySafari, Star Walk, Night Sky
iStellar on the App Store
App details
App privacy Measured
iStellar declares it collects no data at all — the rarest and most private label on the App Store.
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
iStellar downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | NavigationPaid | #25 |
 United Kingdom | NavigationPaid | #106 |
 China | NavigationPaid | #191 |
 South Korea | NavigationPaid | #112 |
| Italy | NavigationPaid | #65 |
 Canada | NavigationPaid | #135 |
 Australia | NavigationPaid | #200 |
 Russia | NavigationPaid | #172 |
Apps near iStellar on the chart
Navigation Paid, around #25.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about iStellar
From the 6 most recent App Store reviews in the US.
Users praise the app's visual beauty and light pollution features but criticize its lack of advanced functionality compared to professional tools. Significant complaints focus on upgrade incompatibility issues and poor customer support responses.
Mixed (17% of recent reviews give 4–5 stars). The main complaints are about price and subscriptions. Recent reviews are more negative than earlier ones.
Common complaints
- Price & subscription: “This app is a fun toy but not worth the price”
About iStellar
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
Latest updates
More from AstroArts Inc.
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Apps people compare with iStellar: the same core purpose or gameplay, checked one by one.
