---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Sky Map"
developer_entity: "Sky Map Devs"
bundle_id: "com.google.android.stardroid"
category: "Books & Reference"
primary_platform: "android"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "Android"
app_last_updated: "2026-08-14"
report_date: "2026-08-16"
last_verified: "2026-08-16T00:00:00.000Z"
report_version: "VARY"
total_reviews: 482301
overall_rating: 4.1
sentiment: "Excited"
sentiment_score: 65
confidence: "high"
confidence_score: 0.8
top_praise_theme: "The ad-free experience provides a clean and focused tool for amateur astronomers and stargazers"
top_complaint_theme: "Post-update sensor calibration issues cause the map to jitter or display objects in incorrect locations"
review_sample_size: 50
total_review_count: 50
analyzed_review_count: 50
data_age_days: 0
momentum_velocity: "maintenance"
intelligence_version: 3
tags: ["books & reference", "free", "excited sentiment", "mobile app", "app review", "app analysis", "astronomy", "enthusiasts", "students"]
canonical_url: "https://marlvel.ai/apps/sky-map-1"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# Sky Map Intelligence Report

## TL;DR {#tldr}

- **Category**: Books & Reference · Free
- **Signal**: Rating 4.15 · Sentiment Excited
- **Recent focus**: Post-update sensor calibration issues cause the map to jitter or display objects in incorrect locations (top complaint) · The ad-free experience provides a clean and focused tool for amateur astronomers and stargazers (top praise)

> **TL;DR:** Sky Map is a books & reference app by Sky Map Devs, rated 4.15/5 by 482.3K users, with Excited user sentiment (65/100), available on Android.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** Sky Map maintains Excited user sentiment (4.15/5 from 482.3K reviews), with users consistently praising the ad-free experience provides a clean and focused tool for amateur astronomers and stargazers.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 4.15/5 (482.3K reviews) |
| **User Mood** | Excited |
| **Category** | Books & Reference |
| **Developer** | Sky Map Devs |
| **Pricing** | Free |
| **Platforms** | Android |
| **Confidence** | High (0.8/1.0) |
| **Data Age** | 0d |

## Metadata & Market Performance
- **Publisher:** Sky Map Devs
- **Category:** Books & Reference
- **Target Audience:** Astronomy enthusiasts and students seeking a free, ad-free, and open-source celestial identification tool.
- **Platforms:** Android
- **Version Reviewed:** VARY
- **Report Date:** 2026-08-16
- **Signal Count:** 50 reviews analyzed
- **Confidence:** High (0.8/1.0)
- **Google Play ID:** com.google.android.stardroid
- **Performance Trend:** Mixed
- **Data Window:** Analysis based on signals collected up to 2026-08-16
- **Short Description:** Sky Map turns your phone into a window on the night sky.

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** Sky Map is an open-source astronomy reference tool that uses device sensors to identify celestial bodies in real-time.
**Why users hire it:** It removes the ad-clutter found in commercial astronomy apps, serving users who prioritize a clean, non-commercial interface for stargazing.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Standard] Real-time Sky Identification:** Uses device sensors to identify celestial bodies in real-time.
- **[Differentiator] Solar Eclipse Preview:** Visualizes eclipse coverage based on user location.
- **[Differentiator] Open Source Codebase:** Publicly accessible code for community contribution.
  * *User Intent:* Users want real-time communication within the app experience.
<!-- /section:features -->

<!-- section:market-position -->
## Market Position {#market-position}

Sky Map holds a top-tier position in the Books & Reference category, ranking #2 in Spain and #5 in the Netherlands, though its overall chart rank remains outside the top 150 in most markets. The gap between category-specific popularity and overall chart presence signals a niche audience that values utility over mass-market appeal.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Free
- **Tiers:** Completely free, ad-free, and open-source
- **Analysis:** Operates as a non-commercial project supported by voluntary donations, removing the ad-inventory monetization common in the category.

<!-- section:sentiment -->
## 🟢 User Sentiment (High Confidence: 50 of 50 reviews analyzed) {#user-sentiment}
- **Overall Rating:** 4.15/5
- **Platform Split:** Android 4.1/5 (482.3K ratings)
- **Overall Sentiment:** Excited

### Top Praises
- **The ad-free experience provides a clean and focused tool for amateur astronomers and stargazers**
- **Long-term users value the consistent updates that maintain the app as a reliable astronomy reference**
- **Real-time celestial tracking features allow users to accurately identify stars and planets in the sky**

### Top Complaints (Impact Areas)

- **Post-update sensor calibration issues cause the map to jitter or display objects in incorrect locations**

<!-- /section:sentiment -->
<!-- section:swot -->
## SWOT Analysis {#swot}

**Core Strengths:**
- Open-source codebase enables community-driven maintenance
- Ad-free model removes ad-supported friction
- Real-time sensor integration provides immediate identification

**Growth Levers:**
- Augmented reality overlays would improve calibration
- Visual markers for celestial boundaries improve utility


<!-- /section:swot -->
## Recent Changes (v2 → v3) {#recent-changes}

The analysis has shifted from a neutral observation of the app's open-source model to a more critical assessment of how its lack of monetization creates a long-term retention risk. The product roadmap now prioritizes onboarding improvements over feature expansion to mitigate churn.

**Overall trend**: Mixed
**Compared at**: 2026-08-16

### High-impact changes
- **[Shifted] Niche Market Positioning** (positioning)
- **[Added] Monetization as a Liability** (swot)

### Medium-impact changes
- **[Added] Onboarding and Feature Risks** (swot)
- **[Added] Onboarding Investment** (positioning)

<!-- section:whats-new -->
## What's New

- **Latest (vVARY, 5 days ago):** Introduced solar eclipse previews for specific locations and a true-to-life scale setting for the Sun and Moon.
<!-- /section:whats-new -->

<!-- section:momentum -->
## App Momentum (Maintenance) {#momentum}

- Shipped solar eclipse preview tools.
- Maintains maintenance-only release cadence.

> **Cadence:** 1 total versions · 1 majors in last 6 months · 5 days since last update

<!-- /section:momentum -->

<!-- section:so-what -->
## The "So What?" (Strategic Takeaway) {#so-what}

Sky Map is a market-leading books & reference app that is completely free.
With a 4.15/5 rating from 482.3K reviews, it delivers strong user satisfaction.

<!-- speakable-start -->
> **Bottom Line:** Sky Map's open-source, ad-free model retains a loyal core, but persistent sensor jitter threatens its utility-first value proposition. Pivoting engineering capacity toward sensor stability would protect the user base from migrating to more reliable commercial alternatives.
<!-- speakable-end -->

**Best for:** Astronomy enthusiasts and students seeking a free, ad-free, and open-source celestial identification tool.

<!-- section:pm-actions -->
### PM Action Plan (Next Best Moves)

- [ ] [PIVOT] Audit sensor calibration logic because post-update jitter is the top complaint → stabilize core utility
<!-- /section:pm-actions -->

<!-- section:outlook -->
### Outlook: Mixed

The astronomy reference market is consolidating around tools that offer high-fidelity sensor tracking and AR integration. Sky Map's reliance on community maintenance leaves it exposed to performance regressions, so stabilizing the core sensor logic is essential to prevent users from switching to more reliable commercial competitors.

- 🔴 Post-update sensor jitter makes the interface unusable, which directly erodes the daily active habit and increases churn risk.
- 🟢 The ad-free, open-source model maintains a clear differentiator against ad-heavy category rivals, sustaining organic install velocity among astronomy enthusiasts.
<!-- /section:outlook -->

<!-- /section:so-what -->

<!-- section:metrics -->
## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Overall Rating | 4.15/5 |
| Total Reviews | 482.3K |
| Sentiment | Excited (65/100) |
| Confidence | High |
| Pricing Model | Free |
| Platforms | Android |
| Key Features | 3 analyzed |
| Trend | Mixed |
| Outlook | Mixed |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Sky Map** (this app) | 4.15/5 | Excited | Sky Map Devs |
| [디리토](https://marlvel.ai/apps/kr-co-diritto) | 4.4/5 | N/A | RIDI Corporation |
| [하이북 (레드) - 무협, 판타지 소설, 웹툰, 만화](https://marlvel.ai/apps/kr-co-hibook-a00700) | 3.6/5 | N/A | hibook |
| [목회와 신학](https://marlvel.ai/apps/app--977) | 3.0/5 | N/A | Duranno |
| [법퍼링 법전 - 변호사가 만든 법전, 버퍼링 법전](https://marlvel.ai/apps/net-papership-beoppering-beoppering) | 4.9/5 | N/A | Jongwoo, Bai |
| [ኡሱሉ ሰላሳ ኪታብ](https://marlvel.ai/apps/com-hussenapp-usulusman) | 5.0/5 | N/A | Hussen Oumer Amid |

## Company Profile
- **Developer:** Sky Map Devs
- **Website:** [https://stardroid.app](https://stardroid.app)
- **Social:** [Instagram](https://www.instagram.com/github) · [Facebook](https://www.facebook.com/groups/stardroidapp) · [X/Twitter](https://twitter.com/github) · [YouTube](https://www.youtube.com/github) · [TikTok](https://www.tiktok.com/@github) · [LinkedIn](https://www.linkedin.com/company/github)

## Data Sources & Links
- **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.google.android.stardroid&hl=en&gl=us)
- **Dev Site:** [Official Website](https://stardroid.app)
- **Sources:** Developer website content, About us / company information, App store metadata, User reviews.

## Related Intel Reports
- [*디리토*](https://marlvel.ai/apps/kr-co-diritto) (RIDI Corporation) · 4.4/5 Rating
- [*하이북 (레드) - 무협, 판타지 소설, 웹툰, 만화*](https://marlvel.ai/apps/kr-co-hibook-a00700) (hibook) · 3.6/5 Rating
- [*목회와 신학*](https://marlvel.ai/apps/app--977) (Duranno) · 3.0/5 Rating
- [*법퍼링 법전 - 변호사가 만든 법전, 버퍼링 법전*](https://marlvel.ai/apps/net-papership-beoppering-beoppering) (Jongwoo, Bai) · 4.9/5 Rating
- [*ኡሱሉ ሰላሳ ኪታብ*](https://marlvel.ai/apps/com-hussenapp-usulusman) (Hussen Oumer Amid) · 5.0/5 Rating
- [*አዳኡ ወደዋእ በሽታ እና ፈውሱ*](https://marlvel.ai/apps/com-hussenapp-adauwedewa) (Hussen Oumer Amid) · 4.7/5 Rating
- [*원불교 경전법문집*](https://marlvel.ai/apps/kr-or-won-wonbubmoon) (원불교 Wonbuddhism) · 4.6/5 Rating
- [*ሸርህ ነዋቂዱል ኢስላም*](https://marlvel.ai/apps/explanation-of-the-new-islamic-book-with-audio-wit) (Hussen Oumer Amid) · N/A Rating
- [*두플러스 - 복음을 읽는 새로운 습관*](https://marlvel.ai/apps/app--975) (Duranno) · 4.8/5 Rating
- [*현대인의 성경*](https://marlvel.ai/apps/com-biblica-korean) (Biblica, Inc.) · 4.3/5 Rating

## Frequently Asked Questions {#faq}

### Is Sky Map completely free to use?

Yes, Sky Map is a non-commercial, open-source project that does not include advertisements or paid tiers.

### Does Sky Map work offline?

Sky Map uses device sensors for real-time identification, but some features may require an internet connection for data updates or event timing.

### How does Sky Map compare to commercial astronomy apps?

Sky Map distinguishes itself through an ad-free, open-source model, whereas commercial rivals often rely on ad-inventory or subscription tiers to fund development and QA.

### What are the best alternatives to Sky Map?

Users seeking more frequent updates or augmented reality features may consider commercial astronomy apps, though these often include advertisements or paid subscriptions.

## Methodology {#methodology}

This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline:

1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps.
2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks.
3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes).
4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category.
5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights.

- **Confidence Score:** 0.8/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 50
- **Data Sources:** user reviews, developer website, company about page, App Store metadata
- **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform
- **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence.
- **Report Age:** 0 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/sky-map-1)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.