Report updated Jun 9, 2026
Stellarium Mobile - Star Map
For astronomy hobbyists and casual stargazers looking for both educational sky mapping and professional-grade telescope control.
Stellarium Mobile - Star Map is an established education app that is free with in-app purchases. With a 4.8/5 rating from 341.1K reviews, it shows polarized user reception.
What is Stellarium Mobile - Star Map?
Stellarium Mobile is a planetarium app for iOS and Android that provides real-time sky mapping and telescope control for astronomy hobbyists.
Users hire the app to bridge the gap between casual stargazing and professional-grade observation, relying on its scientific accuracy to identify celestial objects in real time.
Current Momentum
v1.15
- Shipped bug fixes for data deletion.
- Ships frequent stability updates for Android.
What makes this app unique?
What Does It Look Like?
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What Are The Key Features?
Uses device sensors to identify stars, planets, and satellites by pointing the phone at the sky
WIFI-based control for GOTO telescopes using NexStar, SynScan, or LX200 protocols
Access to 1.69 billion stars and 2 million deep sky objects via Gaia DR2 catalog
How much does it cost?
- Free version with magnitude 8 visibility
- Plus version via one-time payment or subscription
Freemium model gates advanced catalog depth and hardware control behind a paid upgrade, targeting both casual users and serious hobbyists.
Who Built It?
Providing high-fidelity celestial simulations for astronomy enthusiasts to explore the night sky in real-time.
Portfolio
1
Apps
Explore the full Noctua Software report
Portfolio breakdown, audience, momentum, and every app published by Noctua Software.
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for Stellarium Mobile - Star Map?
Where is it available?
Localized markets (11)
How's The Education Market?
Stellarium Mobile maintains a strong international presence, with top-20 Education chart rankings in markets including Australia, Italy, and the UAE. The app's freemium strategy effectively segments users, with the free version serving as a high-volume acquisition funnel while the paid tier captures high-intent hobbyists through advanced hardware control and catalog depth.
How does it evolve in the Education market?
Stellarium Mobile maintains a strong international presence, holding top-20 Education chart rankings in over 15 markets including Australia and Italy. The gap between its free-tier discovery and paid-tier revenue conversion suggests the app successfully captures high-intent hobbyists while maintaining broad casual reach.
Rank progression
199 active rankings tracked — 30-day window
Which niche is Stellarium Mobile - Star Map in?
Explore the full Science Guides niche
Every app in this space — 33 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
With over 480k ratings, this app dominates the market share for sky-mapping and maintains a high-frequency update cadence.
Differentiators
- Aggressive cross-platform integration across Apple Watch, iPhone, and iPad maximizes user touchpoints throughout the day.
- Advanced augmented reality overlays provide deeper contextual data for celestial objects compared to standard map views.
- Frequent feature releases ensure the app remains at the forefront of mobile astronomy technology trends.
Head to head
The target app must prioritize ecosystem expansion and visual polish to prevent Night Sky from capturing the casual user segment entirely.
Contenders(1)
A long-standing, highly-rated competitor that maintains a consistent release schedule and strong brand recognition.
Differentiators
- Artistic, hand-drawn constellation illustrations offer a distinct aesthetic departure from the target's realistic, scientific map style.
- Consistent six-month release cadence demonstrates a commitment to maintaining feature parity and platform compatibility.
Same space(2)
A legacy competitor in the education category that serves as a baseline for entry-level sky observation.
Differentiators
- Simplified feature set lowers the barrier to entry for children and casual users compared to the target app.
- Lack of recent updates suggests a stagnant product roadmap, making it vulnerable to displacement by more active competitors.
Focuses on a specific, high-intent sub-niche of astronomy, serving users interested in satellite tracking rather than general sky mapping.
Differentiators
- Hyper-focused utility on satellite and ISS tracking provides a specialized value proposition that general sky maps lack.
- Real-time alert system for satellite passes creates a recurring usage loop that general planetarium apps struggle to replicate.
Compare Stellarium Mobile - Star Map against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for Stellarium Mobile - Star Map
Strengths to defend, gaps to attack
Core Strengths
- Scientific accuracy derived from open-source heritage sustains high user trust
- Telescope control protocols create high switching costs for hobbyists
- Minimalist UI reduces cognitive load for casual stargazers
Critical Frictions
- Premium tier lacks cross-platform notification parity
- No wearable integration limits active outdoor engagement
- Android-iOS rating gap suggests inconsistent performance
Growth Levers
- Education partnerships untapped as B2B distribution
- Wearable integration captures active-observation segment
- Localized sky-culture content expands regional appeal
Market Threats
- Night Sky's high-frequency update cadence outpaces development
- EU data-minimization tightening on kids category
- Rising competition from specialized satellite-tracking apps
What are the next best moves?
Ship wearable companion app because it is the top missing engagement surface → capture active-observation segment
Competitor Night Sky uses wearable integration to maintain user touchpoints during observation.
Trade-off: Pause the Android-specific UI polish sprint — wearable parity has higher retention impact.
Audit Android performance because of the 0.05★ rating gap vs iOS → stabilize the high-volume Android base
The Android-iOS rating gap indicates inconsistent performance that threatens the larger Android user base.
Trade-off: Same-quarter capacity available — no major lever displaced.
A counter-intuitive read
The app's open-source heritage is its primary moat, as the scientific rigor required to match its database is a higher barrier to entry than the visual polish of competitors.
Feature Gaps vs Competitors
- Wearable integration (available in Night Sky but absent here)
- Cross-platform notification alerts (available in Night Sky but absent here)
Key Takeaways
- Prioritize wearable integration to defend the active-hobbyist segment against Night Sky.
- Leverage the scientific-accuracy moat to pursue institutional education partnerships for B2B growth.
- Address the Android-iOS rating gap to stabilize the user base on the higher-volume platform.
Stellarium Mobile holds its category lead through scientific accuracy, but it bleeds engagement to rivals with better ecosystem integration, so revenue growth hinges on tightening the wearable-observation loop.
Where Is It Heading?
Stable
The astronomy app market is consolidating around ecosystem-integrated experiences, leaving standalone planetarium apps exposed to churn. Stellarium Mobile must pivot from a feature-parity roadmap to an ecosystem-first strategy to prevent Night Sky from capturing the high-value hobbyist segment.
Consistent top-20 chart performance across 15+ markets indicates strong organic acquisition velocity that sustains the freemium funnel.
Lack of wearable integration forces users to rely on mobile-only interaction, which limits the app's utility during active outdoor observation sessions.