Softwr

Education · head to head

Brilliant vs Stellarium

Brilliant logo

Brilliant

Education

Learn math and science through problem-solving

From
Free
Rated
-
Full reviewWebsite
Stellarium logo

Stellarium

Education

Free open source desktop planetarium software, distinct from the paid Stellarium Mobile Plus app

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Brilliant requires active daily engagement to maintain learning streaks, which can feel gamified; Stellarium it is desktop-only software, so it has no native touch-optimised phone interface; the similarly named mobile app is a different paid product from a different company.
  • They diverge on capability: Brilliant covers Interactive lessons, Stellarium covers Photorealistic sky rendering.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Brilliant and Stellarium actually diverge.

Attributes where Brilliant and Stellarium differ
AttributeBrilliantStellarium
Pricing modelUnknownOpen source, no licence fee
PlatformsWeb, iOS, AndroidWindows, macOS, Linux
Founded2012Unknown

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 Stellarium

  • Photorealistic sky rendering
  • Large object catalogue
  • Telescope control
  • Scripting engine
  • Free and open source
  • Plugin ecosystem

What people use each for

The jobs each tool is most often brought in to do.

Brilliant

  • Math learningnot Stellarium
  • Science educationnot Stellarium
  • Programming basicsnot Stellarium
  • Problem-solving skillsnot Stellarium

Stellarium

  • A student or educator wanting a serious, scriptable planetarium tool without a budget line itemnot Brilliant
  • An amateur astronomer wanting telescope control from desktop software they can inspect and modifynot Brilliant
  • Someone running a planetarium display or public astronomy event on a scripted shownot Brilliant
  • A hobbyist who wants a large object catalogue without paying a subscription, and does not need a phone appnot 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

Stellarium

  • It is desktop-only software, so it has no native touch-optimised phone interface; the similarly named mobile app is a different paid product from a different company.
  • As a volunteer-maintained open source project, support is community-based rather than a guaranteed commercial help desk.
  • The interface, while capable, is less immediately intuitive for a first-time user than a polished commercial phone app.
  • Telescope control and some advanced plugins require additional setup that a non-technical user may find fiddly.
  • Because it shares a name with the unrelated paid Stellarium Mobile Plus app, buyers researching pricing online can easily conflate the two products.

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

Stellarium

Free
  • Stellarium DesktopFree
    • Full software, GPL licensed
    • No account, ads or subscription
    • Community-developed plugins

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.
Brilliant review

Choose Stellarium if

  • You need photorealistic sky rendering.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want large object catalogue.
Stellarium review

Questions people ask

Is Brilliant or Stellarium better?
Neither clearly leads. Brilliant starts at Free and Stellarium at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Brilliant or Stellarium?
Brilliant starts at Free and Stellarium at Free.
Does Brilliant or Stellarium run on more platforms?
Brilliant runs on Web, iOS, Android. Stellarium runs on Windows, macOS, Linux.
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 Stellarium is typically brought in for.
What can Brilliant do that Stellarium cannot?
Brilliant covers Interactive lessons, Problem-solving, Daily challenges, Progress tracking. Stellarium covers Photorealistic sky rendering, Large object catalogue, Telescope control, Scripting engine.

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.

Source
Stellarium: Is Stellarium really free?

The desktop software is free and open source under the GPL licence. The separate mobile app, Stellarium Mobile Plus, is a different paid product.

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.

Source
Stellarium: Is the mobile app made by the same team?

No. Stellarium Mobile Plus is built by Noctua Software, a different company, and is sold on subscription.

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.

Source
Stellarium: What platforms does the free version run on?

Windows, macOS and Linux desktop.

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.

Source
Share

Related pages

More on Brilliant

More on Stellarium

Keep looking

Other head to heads