Comparison

Celestron SkyPortal vs Bright Comets

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

Head to head
About

Celestron SkyPortal

Explore the cosmos with a comprehensive astronomy suite. Discover stars, planets, and celestial events, and enhance your stargazing with detailed information and audio narration. Connect to compatible telescopes for automatic object location.

Highlights
  • Explore 120,000 stars and celestial objects
  • Simulate night sky past/future
  • Real-time sky synchronization
  • Control compatible WiFi telescopes
  • Animate celestial events
  • Audio narration and object descriptions
  • Night Vision mode
Features
Read full description

Celestron’s newest planetarium app is an astronomy suite that redefines how you experience the night sky. Explore the Solar System, 120,000 stars, over 200 star clusters, nebulae, galaxies, and dozens of asteroids, comets, and satellites—including the ISS. SkyPortal includes everything you need to experience the night sky in an exciting new way. When connected to a compatible Celestron WiFi telescope, you can automatically point the telescope to any object in the database and view it with great detail. Planetarium Features Simulate the night sky and plan your observing session with a custom list of tonight’s best objects based on your exact time and location. Look ahead to see when Jupiter’s Great Red Spot will be visible, animate transits, eclipses, and other celestial events. View hundreds of photos or listen to more than four hours of audio narration to enhance your stargazing experience. •Simulate the night sky from anywhere on planet Earth, up to 100 years in the past or future. •Compass Mode (with compatible devices): Hold your device up to the sky for a real-time synchronized display of celestial objects – from star names, constellations, planets, to nebulae and galaxies. •Control compatible Celestron WiFi telescopes with sophisticated mount modeling for quick and accurate go-to alignment. •Animate transits, conjunctions, eclipses, and other events with SkyPortal's Time controls. •Explore the sky with Night Vision turned on, and preserve your eyesight after dark. •Learn the history, mythology, and science of the heavens with SkyPortal's hundreds of object descriptions. •Browse hundreds of astronomical photographs and NASA spacecraft images •Access over 4 hours of audio commentary to guide you through the best celestial objects. Computerized Telescope Control Pair your device to your compatible Celestron WiFi telescope, align with Celestron’s patented SkyAlign™ technology, and you’re ready to explore! Identify objects instantly. Tap any object and your telescope automatically centers it in the eyepiece. SkyPortal’s telescope alignment incorporates advanced mount modeling, providing better pointing accuracy than other telescope systems which rely on a dedicated computer.

About

Bright Comets

Discover visible comets in the night sky with this astronomy tool. Simply point your device upwards, and a red marker will guide you to the comet's location using real-time data.

Highlights
  • Locate visible comets
  • Real-time sky pointing
  • Red target marker guidance
  • Uses device location
  • NASA JPL ephemerides data
Features
Read full description

This app helps you locate all bright comets currently visible in the night sky. Just hold your device up to the sky and find the red target marker on the screen. That's where the comet is! The app uses your location and up-to-date ephemerides from the NASA JPL's Horizons database to calculate the comet's position.

Screenshots

Celestron SkyPortal4 screens
Bright Comets4 screens

Verdict

The call

The clearest difference is rating: Bright Comets at 4.3 against Celestron SkyPortal's 3.6. Bright Comets also leads on review sentiment (74% vs 32%) and update cadence (every 5 days vs every 3 months). Celestron SkyPortal's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and device support 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. Bright Comets sells 1 one-off in-app purchase. Celestron SkyPortal asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Bright Comets holds the better App Store score, 4.3 against 3.6. Both are backed by a comparable volume of ratings — 354 and 153 respectively. Written reviews point the same way: 32% of Celestron SkyPortal's written reviews are positive against 74% of Bright Comets's.

UpkeepUpdate frequency

Celestron SkyPortal ships an update every 3 months, Bright Comets every 5 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Celestron SkyPortal versus Bright Comets: the parameters behind the verdict, then further details
ParameterCelestron SkyPortalBright Comets
PriceFreeFree
Rating3.6 (354 ratings)4.3 (153 ratings) — better
Positive reviews31.9% of reviews74.2% of reviews — better
Number of ratings354 — better153
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.617.0 — better
Further details — not scored
Size709 MB23 MB
Age rating4+4+
DeveloperCelestron, LLCHanno Rein

Customer experience

Celestron SkyPortal

All ratings354 ratings
Positive62.7%
Neutral11.9%
Negative25.4%
Written reviews188 reviews
Positive31.9%
Neutral17.0%
Negative51.1%

Bright Comets

All ratings153 ratings
Positive83.7%
Neutral1.3%
Negative15.0%
Written reviews93 reviews
Positive74.2%
Neutral2.2%
Negative23.7%

Bugs and requests

Celestron SkyPortal

Reported bugs

6 issues
  • Fails to align telescope
  • Telescope points in wrong direction
  • Disconnects frequently
  • Doesn't show deep sky objects
  • Crashes on startup
Show 1 more
  • Incompatible with iOS 14

Requested features

7 requests
  • Add red night mode
  • Improve focus motor control
  • Integrate weather data
  • Provide RA/DEC coordinates
  • Add more celestial objects
Show 2 more
  • Improve video streaming
  • Enhance user interface

Bright Comets

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Celestron SkyPortal

No in-app purchases

1 purchases

Bright Comets

One-time1
  • Coffee$1.99

Questions

Is Celestron SkyPortal free?
Celestron SkyPortal is free to download, with no in-app purchases.
Is Bright Comets free?
Bright Comets is free to download, with in-app purchases available.
Which has better reviews, Celestron SkyPortal or Bright Comets?
Bright Comets is rated higher. Celestron SkyPortal averages 3.6 out of 5 from 354 ratings, while Bright Comets averages 4.3 from 153 ratings.
Do Celestron SkyPortal or Bright Comets have ads?
Neither Celestron SkyPortal nor Bright Comets shows ads.
Which is updated more often, Celestron SkyPortal or Bright Comets?
Celestron SkyPortal ships an update every 3 months, and Bright Comets every 5 days. Most recently, Celestron SkyPortal was updated on November 1, 2026 and Bright Comets on November 3, 2026.

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