Education · head to head
Brilliant vs Sky Guide
Sky Guide
Education
iOS astronomy app that moved from a one-time purchase to a free-to-download, subscription-tiered model
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Brilliant requires active daily engagement to maintain learning streaks, which can feel gamified; Sky Guide it is iOS-only, unlike SkySafari which also covers Android and desktop.
- They diverge on capability: Brilliant covers Interactive lessons, Sky Guide covers Light pollution forecasting.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Brilliant and Sky Guide actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Education).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Brilliant
- Interactive lessons
- Problem-solving
- Daily challenges
- Progress tracking
- Guided paths
- Offline access
- Mobile learning
- Mobile apps
Only in Sky Guide
- Light pollution forecasting
- Meteor shower prediction
- Camera and gyroscope sky view
- Deep-sky object catalogue
- Extreme zoom
- Satellite tracking
What people use each for
The jobs each tool is most often brought in to do.
Brilliant
- Math learningnot Sky Guide
- Science educationnot Sky Guide
- Programming basicsnot Sky Guide
- Problem-solving skillsnot Sky Guide
Sky Guide
- An iOS stargazer who wants light pollution forecasting to plan a dark-sky observing tripnot Brilliant
- Someone tracking meteor showers and wanting a forecast of viewing conditionsnot Brilliant
- A user who wants extreme zoom into deep-sky objects without owning a telescopenot Brilliant
- A buyer comparing subscription astronomy apps on iOS specifically, rather than cross-platform toolsnot Brilliant
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Brilliant
- Requires active daily engagement to maintain learning streaks, which can feel gamified
- Premium subscription needed for full course access; basic free tier is limited
- Focuses only on STEM subjects; no humanities or social sciences
- Interactive nature requires more time commitment than passive video learning
Sky Guide
- It is iOS-only, unlike SkySafari which also covers Android and desktop.
- It has moved from one-time purchase to a subscription model, and long-time users who paid once for earlier versions have criticised the change publicly.
- Pro tier pricing is high relative to Star Walk 2 for broadly similar core stargazing functionality.
- It has no telescope control, unlike SkySafari Plus and Pro, which limits it to naked-eye and camera-based observing.
- Its relationship to other apps under the same distribution platform is not clearly documented, which makes long-term support commitments harder to assess.
Pricing, plan by plan
Brilliant
Free- Premium Monthly$24.99/month
- Access to all 90+ courses
- No ads
- Premium Annual$150/year
- Access to all 90+ courses
- No ads
Sky Guide
Free- Sky GuideFree
- Base sky map and object labelling
- Sky Guide Plus$19.99/year
- Larger star and satellite catalogue
- Light pollution forecasting
- Meteor shower prediction
- Sky Guide Pro$39.99/year
- Very large deep-sky object catalogue
- Exoplanet data
- Extreme zoom
Which should you pick?
Choose Brilliant if
- You need interactive lessons.
- You want to start without paying.
- You work on Web, iOS, Android.
- You also want problem-solving.
Choose Sky Guide if
- You need light pollution forecasting.
- You want to start without paying.
- You work on iOS.
- You also want meteor shower prediction.
Questions people ask
- Is Brilliant or Sky Guide better?
- Neither clearly leads. Brilliant starts at Free and Sky Guide at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Brilliant or Sky Guide?
- Brilliant starts at Free and Sky Guide at Free.
- Does Brilliant or Sky Guide run on more platforms?
- Brilliant runs on Web, iOS, Android. Sky Guide runs on iOS.
- Can I use Brilliant for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Brilliant best used for?
- Brilliant is most often used for math learning, science education, programming basics, problem-solving skills. Of those, math learning and science education are not what Sky Guide is typically brought in for.
- What can Brilliant do that Sky Guide cannot?
- Brilliant covers Interactive lessons, Problem-solving, Daily challenges, Progress tracking. Sky Guide covers Light pollution forecasting, Meteor shower prediction, Camera and gyroscope sky view, Deep-sky object catalogue.
Answered from the vendors’ own pages
Brilliant: Does Brilliant offer offline learning?
Yes. The Brilliant mobile app allows users to download lessons and learn without internet connection.
SourceSky Guide: Is Sky Guide free?
The base app is free to download; Plus and Pro are subscription upgrades for a larger catalogue and forecasting features.
Brilliant: Is there a free tier for Brilliant?
Yes. Brilliant offers a free basic tier with access to some courses. K-12 teachers and their students can qualify for free Premium access.
SourceSky Guide: Did Sky Guide used to be a one-time purchase?
Yes, earlier versions were sold as a one-time purchase before it moved to the current free-plus-subscription model.
Brilliant: What subject areas does Brilliant cover?
Brilliant covers over 90 courses across mathematics, computer science, physics, chemistry, and data science, taught by experts from MIT, Harvard, Google, and Microsoft.
SourceSky Guide: Does Sky Guide support telescope control?
No. For telescope control, SkySafari Plus or Pro is the better choice.
Brilliant: How does Brilliant's teaching approach differ from video lectures?
Brilliant emphasizes active learning through interactive problem-solving rather than passive video watching, similar to Duolingo's gamified approach.
SourceRelated pages
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