Starry Map vs 星空ナビ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Starry Map
Identify stars, constellations, and satellites by pointing your phone at the night sky. Augmented reality overlays display celestial names in real-time. Receive notifications for upcoming satellite passes and meteor showers.
- AR celestial identification
- Constellation and star catalog
- Satellite tracking and alerts
- Meteor shower notifications
- Offline functionality
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Point your smartphone at the night sky to instantly identify constellations, stars, and satellites. AR overlays show celestial names on the live camera view, and you can swipe to explore any direction. Get alerts for visible ISS passes and meteor showers. Includes: ・88 constellations (with Hevelius illustrations) ・Solar system planets, dwarf planets, asteroids ・Stars up to magnitude 12 ・About 100 Messier objects (nebulae and clusters) ・Over 10,000 satellites ・More than 300 comets ・Meteor showers and asterisms (Summer/Winter Triangle, Big Dipper, etc.) ・Satellite pass alerts (ISS, Hubble) ・Meteor shower peak notifications Works offline (satellite data won't update). Terms of Service https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
星空ナビ
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「星空ナビ」は、星空の「今」がわかる新しい星空アプリです。ぜひ見ておきたい星空の景色から、近く見られる天文現象、神秘的な宇宙の話題まで、不思議がいっぱいの星空を思いきり楽しめます。 夕方の空にうかぶ三日月、明るく輝く宵の明星、光跡を残しながら流れる流星群、宇宙の神秘を感じさせる日食や月食といった天文現象はもちろん、最近発見された新しい星や目には見えないブラックホール、惑星探査機が活躍するニュースなどもご覧いただけます。 「星空ナビ」で、夜空の星を感じる毎日を送ってみませんか。 利用規約：https://www.astroarts.co.jp/products/navi/terms-j.shtml
Screenshots
Verdict
The clearest difference is ads: 星空ナビ at none against Starry Map's shown. 星空ナビ also leads on rating (4.7 vs 4.5). Starry Map's advantage is review sentiment (62% vs 29%) and ratings volume (246 vs 3). On price, 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
Both are free to download. Starry Map sells 5 in-app purchases, starting at $0.99 per month and 星空ナビ sells 2 in-app purchases, starting at $1.49 per month. Whichever you choose, the download price is not the number that matters.
星空ナビ holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Starry Map has 246 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 62% of Starry Map's written reviews are positive against 29% of 星空ナビ's, so the app with the better star average is not the one people write more warmly about.
Starry Map ships an update every 2 weeks, 星空ナビ every 6 weeks. The most recent releases landed on October 17, 2026 and October 2, 2026 respectively.
| Parameter | Starry Map | 星空ナビ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (246 ratings) | 4.7 (3 ratings) — better |
| Positive reviews | 62.4% of reviews — better | 28.6% of reviews |
| Number of ratings | 246 — better | 3 |
| Update frequency | Every 2 weeks — better | Every 6 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 102 MB | 106 MB |
| Age rating | 4+ | 4+ |
| Developer | にゃんこソフトウェア | AstroArts Inc. |
Customer experience
Starry Map
星空ナビ
Bugs and requests
Starry Map
Reported bugs
13 issues- App crashes on launch after updates
- Date/time setting resets to 1970
- Black screen upon opening the app
- Ads not disappearing even after purchase
- App closes when selecting specific objects (e.g., Comet Neowise)
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- Location accuracy issues
- App closes after update
- App not working on older iOS versions
- Data connection not allowed error
- AR view constantly spinning
- ISS and Starlink not displaying after update
- App crashes when switching night mode
- App crashes when selecting NEOWISE comet
Requested features
8 requests- Reflect weather and light pollution in star visibility
- Include stories/episodes related to constellations
- Separate 1st to 3rd magnitude stars in display options
- Simplify solar system display for beginners
- Option to hide background stars or make them less prominent
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- Add comet Atlas to the catalog
- More user-friendly tutorials on usage
- Search functionality for star names
星空ナビ
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Starry Map
- Unlock Features2 variants$0.991 Month
- Unlock Features7 Days trial2 variants$0.991 Month
- Unlock Features$3.991 Year
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- Unlock Features7 Days trial$3.991 Year
- Unlock Features (Lifetime)$9.99
星空ナビ
- 有料会員（１ヶ月）1 Month trial$1.491 Month
- 有料会員（１年）$13.991 Year
