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Aviation & Aerospace · head to head

DUATS vs AGI STK

DUATS logo

DUATS

Aviation & Aerospace

FAA Direct User Access Terminal System for flight briefings

From
$9.95/month
Rated
-
Full reviewWebsite
AGI STK logo

AGI STK

Aviation & Aerospace

Systems Tool Kit for space and aerospace analysis

From
Free
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: DUATS service has been discontinued as of May 2018; 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: DUATS covers Flight briefings, AGI STK covers Orbit analysis.

Where they differ

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

Attributes where DUATS and AGI STK differ
AttributeDUATSAGI STK
Starting price$9.95/monthFree
Free tierNoYes
PlatformsWeb, Ios, AndroidWindows, Linux
Founded19901989

Identical on both: pricing model (subscription), user rating (Not yet rated), category (Aviation & Aerospace).

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 DUATS

  • Flight briefings
  • Weather data
  • Flight planning
  • Flight filing
  • NOTAMs
  • FAA systems
  • Weather services
  • Chart databases

Only in AGI STK

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

Both cover

  • Data encryption

What people use each for

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

DUATS

  • Flight briefingnot AGI STK
  • Flight planningnot AGI STK
  • Flight filingnot AGI STK
  • Weather briefingnot AGI STK

AGI STK

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

Where each one falls short

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

DUATS

  • Service has been discontinued as of May 2018
  • No longer available for flight planning or briefing

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

DUATS

$9.95/month
  • Basic$9.95/month
    • Flight briefings
    • Weather data
    • Flight planning
  • Premium$29.95/month
    • All Basic features
    • Advanced weather
    • Priority briefings

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 DUATS if

  • You need flight briefings.
  • You work on Web, Ios, Android.
  • You also want weather data.
DUATS 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 DUATS or AGI STK better?
Neither clearly leads. DUATS starts at $9.95/month and AGI STK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, DUATS or AGI STK?
AGI STK has a free tier; the other does not. Paid plans start at $9.95/month for DUATS and Free for AGI STK.
Does DUATS or AGI STK run on more platforms?
DUATS runs on Web, Ios, Android. AGI STK runs on Windows, Linux.
Can I use AGI STK for free?
Yes. AGI STK has a free tier, so you can try it without paying. DUATS starts at $9.95/month.
What is DUATS best used for?
DUATS is most often used for flight briefing, flight planning, flight filing, weather briefing. Of those, flight briefing and flight planning are not what AGI STK is typically brought in for.
What can DUATS do that AGI STK cannot?
DUATS covers Flight briefings, Weather data, Flight planning, Flight filing. AGI STK covers Orbit analysis, 4D visualization, Mission planning, Communication analysis. Both handle Data encryption.

Answered from the vendors’ own pages

DUATS: Is DUATS still available?

No. The FAA discontinued the Direct User Access Terminal Service (DUATS II) on May 16, 2018.

Source
DUATS: Did DUATS cost money?

No. DUATS was free to all registered U.S. pilots and student pilots holding a current medical certificate.

Source
DUATS: What replaced DUATS?

Pilots now access internet-based weather, aeronautical information, and flight plan filing through the FAA flight service website at no charge.

Source
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