Comparison

Sky Guide vs StarPlanner

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sky Guide

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.

Highlights
  • Automatic celestial object identification
  • Augmented reality sky overlay
  • Satellite tracking and notifications
  • Time travel for past/future viewing
  • Personalized astronomical event calendar
  • Offline functionality
Features
Read full description

Bring the beauty of the stars down to Earth. Hold Sky Guide® overhead to automatically identify any star, constellation, planet or satellite! Easy to use and powerful, it’s epic stargazing for any experience level. Is it a star or the planet Mars? Knowing what’s up in your night sky is easier than ever. Sky Guide’s AR mode superimposes figures onto your real sky so visualizing the heavens becomes effortless. Have you ever wished you could recognize constellations but didn’t want to fumble around with paper star charts? Now you can. A speck of light crosses the night sky, growing brighter. What could it be? You don’t have to wonder anymore. Track a bright satellite and receive perfectly-timed notifications whenever the International Space Station is about to fly over your location. With Sky Guide, you’ll be saying ‘Goodbye, aliens’ and ‘Hellooooo, astronauts!’ Voyage to the past or future with cinematic time controls. Know where the Moon will be later in the evening so you can capture that perfect photo or be an eyewitness to history’s greatest comets. Whether you’re searching for Sagittarius, Saturn, or the next big meteor shower, Sky Guide is jam-packed with information and rich graphics that will satisfy the most curious minds. Plus, stay current with location-filtered events like solar and lunar eclipses with Sky Guide’s personalized Calendar. Camping in the backcountry? Sky Guide can function with or without Wi-Fi, cellular service or GPS, so everything is at your fingertips no matter where you go. Join the millions who have discovered a more personal connection to the stars with Sky Guide. It might forever change the way you look up. Terms of Use: https://www.fifthstarlabs.com/terms-of-use

About

StarPlanner

Features
Read full description

Know if tonight is worth stepping outside—and which of the next 16 nights looks even better. StarPlanner combines sky events, local weather, darkness, and moonlight into one clear observing plan. It picks tonight’s best target, shows the viewing window, and tells you where to look. DECIDE WHEN TO GO • An explained night score using clouds, rain, humidity, visibility, darkness, and moonlight • The best nights ranked across a 16-day forecast • Saved observing locations with a sky-darkness profile • Smart clear-sky reminders based on the latest forecast KNOW WHAT AND WHERE TO LOOK • One best target for tonight, without the noise • Meteor showers, Moon phases, eclipses, planets, and bright objects • Calculated direction, altitude, best time, and practical tips • A time-shifting sky map and live finder PLAN IT. REMEMBER IT. • A 12-month astronomy calendar • Local reminders, a widget, and peak countdowns • A private observing journal with export • Red night mode that stays comfortable in the dark FREE AND PRO Free includes the best target and night, current-month planning, sky map, journal, and basic reminders. Pro adds the top five nights, up to four personalized targets, full planet visibility schedules, future calendar planning, and smart clear-sky alerts. No account, ads, trackers, or analytics SDKs. Your journal and settings stay on your device, and you can choose a city without granting GPS access. Background stars are schematic. StarPlanner does not claim to be an AR planetarium or a visible ISS-pass predictor. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sky Guide4 screens
StarPlanner4 screens

Verdict

The call

The clearest difference is chart position: Sky Guide at #16 against StarPlanner's unranked. Sky Guide also leads on device support (4 vs 2). On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sky Guide sells 6 in-app purchases, starting at $4.99 per month and StarPlanner sells 5 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sky Guide ships an update every 2 weeks, StarPlanner every 9 days. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 9 level
Sky Guide versus StarPlanner: the parameters behind the verdict, then further details
ParameterSky GuideStarPlanner
PriceFreeFree
Rating4.8 (379K ratings) — better—
Positive reviews86.0% of reviews—
Number of ratings379K — better—
Update frequencyEvery 2 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
Best chart rank#16 — better—
DevicesiPhone, iPad, Apple Watch, Vision Pro — betteriPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size380 MB3 MB
Age rating4+4+
DeveloperFifth Star Labs LLCPETRO VAKULENKO

Bugs and requests

Sky Guide

Reported bugs

2 issues
  • App freezes when near polar regions
  • Occasional crashes or performance issues

Requested features

5 requests
  • Add more detailed information on moons of planets
  • Implement mosaic planning tools for astrophotography
  • Provide earlier notifications for satellite/ISS passes
  • Allow users to share their observations and photos
  • Improve integration with telescope/camera equipment

StarPlanner

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Sky Guide

Subscriptions4
  • PLUS$4.991 Month
  • PRO$8.991 Month
  • PLUS7 Days trial$39.991 Year
Show 1 more
  • PRO7 Days trial$59.991 Year
One-time2
  • All Constellations$1.99
  • PRO Lifetime$249.99
5 purchases

StarPlanner

Subscriptions1
  • StarPlanner Pro Yearly7 Days trial$9.991 Year
One-time4
  • Support Development — Small$2.99
  • Medium Support Tip$4.99
  • Large Support Tip$9.99
Show 1 more
  • StarPlanner Pro (Lifetime)$16.99

Questions

Is Sky Guide free?
Sky Guide is free to download, with in-app purchases available.
Is StarPlanner free?
StarPlanner is free to download, with in-app purchases available.
Do Sky Guide or StarPlanner have ads?
Neither Sky Guide nor StarPlanner shows ads.
Which is updated more often, Sky Guide or StarPlanner?
Sky Guide ships an update every 2 weeks, and StarPlanner every 9 days. Most recently, Sky Guide was updated on November 9, 2026 and StarPlanner on November 6, 2026.

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