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Photography · head to head

digiKam vs Stellarium

digiKam logo

digiKam

Photography

Open source photo manager with face recognition, geotagging and a shared database option

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: digiKam raw conversion quality is behind Lightroom, Capture One and DxO PhotoLab, so most users treat digiKam as a catalogue and develop files in a second application.; 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: digiKam covers Catalogue database, Stellarium covers Photorealistic sky rendering.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which digiKam and Stellarium actually diverge.

Attributes where digiKam and Stellarium differ
AttributedigiKamStellarium
PlatformsLinux, Windows, macOSWindows, macOS, Linux
CategoryPhotographyEducation

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated).

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 digiKam

  • Catalogue database
  • Face recognition
  • Metadata handling
  • Geotagging
  • Batch queue manager
  • Showfoto editor

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.

digiKam

  • A small studio or department that needs two or three people working against one catalogue without paying per seatnot Stellarium
  • Archiving a large personal or institutional library where metadata must live in the files rather than in a vendor databasenot Stellarium
  • Photographers who want face recognition and geotagging processed locally with nothing sent to a cloud servicenot Stellarium
  • Migrating off a subscription catalogue while keeping tags and ratings, since digiKam reads and writes standard XMPnot Stellarium

Stellarium

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

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

digiKam

  • Raw conversion quality is behind Lightroom, Capture One and DxO PhotoLab, so most users treat digiKam as a catalogue and develop files in a second application.
  • The interface exposes an enormous number of options across crowded panels, and new users routinely fail to find basic functions without reading the manual.
  • Libraries beyond roughly one hundred thousand images need deliberate maintenance of thumbnails and the database, and the SQLite backend slows noticeably before the MySQL one becomes worth configuring.
  • The Windows and macOS builds receive less testing than Linux, and crashes and packaging problems on those platforms are resolved more slowly.
  • There is no commercial support contract, no client delivery and no cloud sync, so an organisation adopting it accepts that its own staff are the support line.

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

digiKam

Free
  • digiKamFree
    • GPL licensed with no seat limit
    • All features including the MySQL backend
    • Community support through mailing list and bug tracker

Stellarium

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

Which should you pick?

Choose digiKam if

  • You need catalogue database.
  • You want to start without paying.
  • You work on Linux, Windows, macOS.
  • You also want face recognition.
digiKam 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 digiKam or Stellarium better?
Neither clearly leads. digiKam 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, digiKam or Stellarium?
digiKam starts at Free and Stellarium at Free.
Does digiKam or Stellarium run on more platforms?
digiKam runs on Linux, Windows, macOS. Stellarium runs on Windows, macOS, Linux.
Can I use digiKam for free?
Both have a free tier, so you can try either at no cost before committing.
What is digiKam best used for?
digiKam is most often used for a small studio or department that needs two or three people working against one catalogue without paying per seat, archiving a large personal or institutional library where metadata must live in the files rather than in a vendor database, photographers who want face recognition and geotagging processed locally with nothing sent to a cloud service, migrating off a subscription catalogue while keeping tags and ratings, since digikam reads and writes standard xmp. Of those, a small studio or department that needs two or three people working against one catalogue without paying per seat and archiving a large personal or institutional library where metadata must live in the files rather than in a vendor database are not what Stellarium is typically brought in for.
What can digiKam do that Stellarium cannot?
digiKam covers Catalogue database, Face recognition, Metadata handling, Geotagging. Stellarium covers Photorealistic sky rendering, Large object catalogue, Telescope control, Scripting engine.

Answered from the vendors’ own pages

digiKam: Can several people use one digiKam catalogue?

Yes, by pointing digiKam at a shared MySQL or MariaDB database with images on a network volume. It is not designed for simultaneous heavy editing but it works for shared cataloguing.

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.

digiKam: Does it move or change my files?

Not unless you ask. It catalogues folders in place, and metadata can be written to sidecar files rather than into the originals.

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.

digiKam: Is it a Lightroom replacement?

As a catalogue, yes. As a raw developer, no. Most people who switch pair it with darktable or RawTherapee for editing.

Stellarium: What platforms does the free version run on?

Windows, macOS and Linux desktop.

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