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Aviation · head to head

AGI STK vs SkyVector

AGI STK logo

AGI STK

Aviation

Systems Tool Kit for space and aerospace analysis

From
Free
Rated
-
Full reviewWebsite
SkyVector logo

SkyVector

Aviation

Free online flight planning and navigation tool

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: AGI STK sTK is sold as a ladder of separate licences, STK Pro, STK Premium Air, STK Premium Space and STK Enterprise, so mission areas are gated behind different products; SkyVector contract fuel pricing data restricted behind authentication login
  • They diverge on capability: AGI STK covers Orbit analysis, SkyVector covers Flight planning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which AGI STK and SkyVector actually diverge.

Attributes where AGI STK and SkyVector differ
AttributeAGI STKSkyVector
Pricing modelsubscriptionfreemium
PlatformsWindows, LinuxWeb, Ios, Android
Founded19892006

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Aviation).

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 AGI STK

  • Orbit analysis
  • 4D visualization
  • Mission planning
  • Communication analysis
  • Conjunction assessment
  • MATLAB
  • Python
  • C++/.NET API

Only in SkyVector

  • Flight planning
  • Aeronautical charts
  • Weather integration
  • Navigation
  • Airport search
  • Weather API
  • Aviation databases
  • Chart systems

Both cover

  • Data encryption

What people use each for

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

AGI STK

  • Modelling satellite orbits, coverage and conjunction risknot SkyVector
  • Mission analysis and visualization for air, space and defence systemsnot SkyVector

SkyVector

  • Flight planning and aeronautical chart access for pilotsnot AGI STK
  • Real-time monitoring of drone operating areas via DROTAM alertsnot AGI STK
  • Retail and contract aviation fuel pricing lookupnot AGI STK
  • Advanced trading tools for power users and day tradersnot AGI STK

Where each one falls short

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

AGI STK

  • STK is sold as a ladder of separate licences, STK Pro, STK Premium Air, STK Premium Space and STK Enterprise, so mission areas are gated behind different products
  • Further capability is sold as separate add-on toolkits including TETK, the RF Channel Modeler and the STK Missile Toolkit
  • Distributing an application built on STK Engine to end users requires each of them to hold an Ansys STK Engine Runtime License
  • Free access is limited to students at accredited institutions and to time-limited trials
  • No price, minimum or cost driver is published for any STK tier

SkyVector

  • Contract fuel pricing data restricted behind authentication login
  • Minimal disclosure of feature scope or capabilities on homepage
  • No published subscription costs or premium tier pricing details

Pricing, plan by plan

AGI STK

Free
  • STK FreeFree
    • Basic analysis
    • 2D/3D visualization
    • Orbit analysis
  • STK Professional$15000/year
    • Advanced analysis
    • Premium modules
    • API access
  • STK Enterprise$50000/year
    • All modules
    • Multi-user
    • Custom solutions

SkyVector

Free
  • FreeFree
    • Aeronautical charts
    • Flight planning
    • Weather briefing

Which should you pick?

Choose AGI STK if

  • You need orbit analysis.
  • You want to start without paying.
  • You work on Windows, Linux.
  • You also want 4d visualization.
AGI STK review

Choose SkyVector if

  • You need flight planning.
  • You want to start without paying.
  • You work on Web, Ios, Android.
  • You also want aeronautical charts.
SkyVector review

Questions people ask

Is AGI STK or SkyVector better?
Neither clearly leads. AGI STK starts at Free and SkyVector at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AGI STK or SkyVector?
AGI STK starts at Free and SkyVector at Free.
Does AGI STK or SkyVector run on more platforms?
AGI STK runs on Windows, Linux. SkyVector runs on Web, Ios, Android.
Can I use AGI STK for free?
Both have a free tier, so you can try either at no cost before committing.
What is AGI STK best used for?
AGI STK is most often used for modelling satellite orbits, coverage and conjunction risk, mission analysis and visualization for air, space and defence systems. Of those, modelling satellite orbits, coverage and conjunction risk and mission analysis and visualization for air, space and defence systems are not what SkyVector is typically brought in for.
What can AGI STK do that SkyVector cannot?
AGI STK covers Orbit analysis, 4D visualization, Mission planning, Communication analysis. SkyVector covers Flight planning, Aeronautical charts, Weather integration, Navigation. Both handle Data encryption.

Answered from the vendors’ own pages

SkyVector: Is SkyVector free to use?

SkyVector offers both free and paid tiers. Basic aeronautical charts and retail fuel prices are available free, while contract fuel pricing requires login or signup.

Source
SkyVector: What information does SkyVector provide about aviation fuel?

SkyVector provides access to retail fuel pricing for jet fuel and aviation gasoline, plus contract fuel prices for registered users.

Source
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