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Software · head to head

simBrief vs AGI STK

S

simBrief

Software

Free online flight planning for flight simulators

From
Free
Rated
-
Full reviewWebsite
AGI STK logo

AGI STK

Software

Systems Tool Kit for space and aerospace analysis

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: simBrief the free version uses a navigation database the vendor describes as slightly outdated by default; AGI STK sTK is sold as a ladder of separate licences, STK Pro, STK Premium Air, STK Premium Space and STK Enterprise, so mission areas are gated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
  • They diverge on capability: simBrief covers Flight planning, AGI STK covers Orbit analysis.

Where they differ

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

Attributes where simBrief and AGI STK differ
AttributesimBriefAGI STK
Pricing modelfreesubscription
PlatformsWebWindows, Linux
Founded20091989

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

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 simBrief

  • Flight planning
  • Weather integration
  • NOTAM analysis
  • Fuel calculation
  • Briefing generation
  • Real weather
  • NOTAM data
  • Aircraft database

Only in AGI STK

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

What people use each for

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

simBrief

  • Generating realistic flight plans and briefing packs for flight simulationnot AGI STK
  • Calculating fuel, routing and weight and balance for simulated flightsnot AGI STK

AGI STK

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

Where each one falls short

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

simBrief

  • The free version uses a navigation database the vendor describes as slightly outdated by default
  • Current navigation data updated every 28 days requires a separate Navigraph subscription
  • Jeppesen IFR and VFR charts require the higher Navigraph Unlimited subscription
  • Neither subscription price is stated on the SimBrief site, since both are sold by Navigraph

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

Pricing, plan by plan

simBrief

Free
  • FreeFree
    • Flight planning
    • Weather analysis
    • Fuel planning

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

Which should you pick?

Choose simBrief if

  • You need flight planning.
  • You want to start without paying.
  • You also want weather integration.
simBrief review

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

Questions people ask

Is simBrief or AGI STK better?
Neither clearly leads. simBrief starts at Free and AGI STK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, simBrief or AGI STK?
simBrief starts at Free and AGI STK at Free.
Does simBrief or AGI STK run on more platforms?
simBrief runs on Web. AGI STK runs on Windows, Linux.
Can I use simBrief for free?
Both have a free tier, so you can try either at no cost before committing.
What is simBrief best used for?
simBrief is most often used for generating realistic flight plans and briefing packs for flight simulation, calculating fuel, routing and weight and balance for simulated flights. Of those, generating realistic flight plans and briefing packs for flight simulation and calculating fuel, routing and weight and balance for simulated flights are not what AGI STK is typically brought in for.
What can simBrief do that AGI STK cannot?
simBrief covers Flight planning, Weather integration, NOTAM analysis, Fuel calculation. AGI STK covers Orbit analysis, 4D visualization, Mission planning, Communication analysis.
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