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Aviation · head to head

AGI STK vs EFB Pro

AGI STK logo

AGI STK

Aviation

Systems Tool Kit for space and aerospace analysis

From
Free
Rated
-
Full reviewWebsite
EFB Pro logo

EFB Pro

Aviation

Electronic Flight Bag for professional aviation operations

From
$149.99/month
Rated
-
Full reviewWebsite

The short version

  • Only AGI STK has a free tier, so it costs nothing to try first.
  • 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; EFB Pro aircraft type support is limited to a published list on CAVU's own site; adding a new aircraft type requires contacting CAVU directly rather than self-service configuration
  • They diverge on capability: AGI STK covers Orbit analysis, EFB Pro 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 EFB Pro actually diverge.

Attributes where AGI STK and EFB Pro differ
AttributeAGI STKEFB Pro
Starting priceFree$149.99/month
Free tierYesNo
PlatformsWindows, LinuxIos, Android, Windows
Founded19892010

Identical on both: pricing model (subscription), 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 EFB Pro

  • Flight planning
  • Weight and balance
  • Performance planning
  • Aeronautical charts
  • In-flight management
  • FMS systems
  • Dispatch systems
  • Weather services

Both cover

  • Data encryption
  • Windows support

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 EFB Pro
  • Mission analysis and visualization for air, space and defence systemsnot EFB Pro

EFB Pro

  • Commercial operationsnot AGI STK
  • Crew trainingnot AGI STK
  • Flight performancenot AGI STK
  • Dispatch coordinationnot 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

EFB Pro

  • Aircraft type support is limited to a published list on CAVU's own site; adding a new aircraft type requires contacting CAVU directly rather than self-service configuration
  • Requires iOS 15.6 or later, per the App Store listing

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

EFB Pro

$149.99/month
  • Standard$149.99/month
    • Flight planning
    • Charts access
    • Weight and balance
  • Enterprise$299.99/month
    • All Standard features
    • Crew training
    • Custom integrations

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 EFB Pro if

  • You need flight planning.
  • You work on Ios, Android, Windows.
  • You also want weight and balance.
EFB Pro review

Questions people ask

Is AGI STK or EFB Pro better?
Neither clearly leads. AGI STK starts at Free and EFB Pro at $149.99/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AGI STK or EFB Pro?
AGI STK has a free tier; the other does not. Paid plans start at Free for AGI STK and $149.99/month for EFB Pro.
Does AGI STK or EFB Pro run on more platforms?
AGI STK runs on Windows, Linux. EFB Pro runs on Ios, Android, Windows.
Can I use AGI STK for free?
Yes. AGI STK has a free tier, so you can try it without paying. EFB Pro starts at $149.99/month.
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 EFB Pro is typically brought in for.
What can AGI STK do that EFB Pro cannot?
AGI STK covers Orbit analysis, 4D visualization, Mission planning, Communication analysis. EFB Pro covers Flight planning, Weight and balance, Performance planning, Aeronautical charts. Both handle Data encryption, Windows support.
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