Best Bortle Map Apps

144+ iOS apps curated and reviewed

4.3 avg rating
16 free apps
Updated June 2026

Looking for free bortle map apps? 16 of our 144+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Bortle Map Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Light Pollution Map - Dark SkyLight Pollution Map - Dark SkyFree4.5★ (232)NoYesSep 2026
2Sky GuideSky GuideFree4.8★ (373K)NoYesSep 2026
3Avenza Maps: Offline MappingAvenza Maps: Offline MappingFree4.8★ (127K)NoYesSep 2026
4Yandex Maps & NavigatorYandex Maps & NavigatorFree4.6★ (37K)NoYesSep 2026
5Scenic Map Western USAScenic Map Western USA$4.994.2★ (13)NoNoAug 2026
6MapsterMapsterFree4.9★ (15)NoYesMay 2026
7World Map +World Map +Free4.7★ (8K)YesNoSep 2026
8700 City Maps700 City MapsFree3.0★ (5)NoYesAug 2026

Top Picks for Bortle Map

Light Pollution Map - Dark Sky#1

Light Pollution Map - Dark Sky by Dunbar Technology, LLC

Astronomy tools & more
Editor's Choice
☀️ Weather
4.5😞(232 ratings)
FreeIn-App Purchases
Light Pollution Map - Dark Sky screenshot 1
Light Pollution Map - Dark Sky screenshot 2
Light Pollution Map - Dark Sky screenshot 3
Light Pollution Map - Dark Sky screenshot 4
Light Pollution Map - Dark Sky screenshot 5
Light Pollution Map - Dark Sky screenshot 6

Discover optimal locations for stargazing and astrophotography with a detailed light pollution map. Get real-time alerts for celestial events like meteor showers and auroras, track the ISS, and access daily astronomy photos. Enhance your night sky observations with comprehensive tools and information.

What We Love

  • 👍 Clear detailed satellite views
  • 🚀 Works with barely any signal
  • 📊 Useful map with latest data
  • 🌌 Helps with astrophotography

Room to Improve

  • 🐛 Crashes on opening the map
  • 🐛 Crashes after locating user's position
  • 🔍 No legend for map colors
  • 💰 Tries to get users to upgrade to premium
Sky Guide#2

Sky Guide by Fifth Star Labs LLC

Star gaze constellation finder
Strong Contender
🔍 Reference
4.8😊(373K ratings)
FreeIn-App Purchases
#10in Reference
Sky Guide screenshot 1
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Sky Guide screenshot 3
Sky Guide screenshot 4
Sky Guide screenshot 5
Sky Guide screenshot 6

Identify stars, constellations, planets, and satellites in real-time by holding your device overhead. Explore celestial bodies with AR overlays, track satellites like the ISS, and travel through time to view past and future astronomical events. Perfect for both novice and experienced stargazers.

What We Love

  • 🌟 Stunning visuals and graphics
  • 📚 Wealth of information on celestial objects
  • 🧭 Accurate and responsive compass/AR features
  • 🌌 Immersive stargazing experience
  • 🔍 Ability to identify stars, planets, and satellites
  • 🌃 Helpful for planning stargazing and astrophotography
  • 🎶 Relaxing and atmospheric background music
  • 🗓️ Notifications for upcoming celestial events

Room to Improve

  • 🧭 Occasional compass/location calibration issues
  • 💰 Subscription model limits access to some features
  • 🌍 Lack of support for certain regions/locations
  • 🕰️ Outdated information on some celestial objects
Avenza Maps: Offline Mapping#3

Avenza Maps: Offline Mapping by Avenza Systems Inc.

GPS Navigation & Trail Maps
Worth Considering
🗺️ Navigation
4.8😊(127K ratings)
FreeIn-App Purchases
#13in Navigation
Avenza Maps: Offline Mapping screenshot 1
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Avenza Maps: Offline Mapping screenshot 3
Avenza Maps: Offline Mapping screenshot 4
Avenza Maps: Offline Mapping screenshot 5

Navigate any terrain with offline GPS maps, even without cell service. Explore a vast Map Store for hiking, biking, and travel, or import your own custom maps. Record tracks, add notes, and identify your location precisely.

What We Love

  • 🚀 Easy to use
  • 🗺️ Accurate GPS tracking
  • 📥 Offline maps
  • 💾 Ability to download maps
  • 🗺️ Detailed topographic maps
  • 🗺️ Helpful for navigation
  • 🗺️ Great for hiking/biking

Room to Improve

  • 🔍 Poor search functionality
  • 🗺️ Inaccurate map placement
  • 💰 Expensive maps
  • 🔋 Battery drain
  • 🤔 Confusing interface
  • 🔄 Difficulty managing downloaded maps
  • 🚫 Subscription model issues

More Bortle Map apps to explore

FAQ about Bortle Map

What are the best bortle map apps for iPhone?
Light Pollution Map - Dark Sky tops our bortle map apps ranking as of June 2026, with a 4.5-star average from 232 App Store ratings, and it's free to download.
Yes — 16 of the top bortle map apps we rank are free to download, including Light Pollution Map - Dark Sky and Sky Guide.
Light Pollution Map - Dark Sky has no ads and offers in-app purchases, according to its App Store listing as of June 2026.
We track 144+ bortle map apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
The app helps you find dark sky locations ideal for stargazing, astrophotography, and general night sky observation. It provides a detailed, interactive light pollution map and offers real-time information and alerts for various celestial events.
Key features include a customizable light pollution map, live aurora borealis information and visibility maps, alerts for meteor showers, super moons, and lunar eclipses, an ISS tracker, moon phase information, and daily astronomy photos from NASA.