FAA Aircraft Dispatcher Knowledge Test Preparation

Sheffield’s ADX Test Prep App

Quick Description/overview of Sheffield’s ADX Test Prep App:

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Screen Shots
(below is an SWF file which may not appear on some devices or computers. Alternative images coming soon.)

Screen shots cover - ADX Test Prep app

Web Gallery of screen shots coming soon.

Demo Video (coming soon)



From the U.S. iTunes store:

5 stars – “Excellent way to prepare to take your ADX” 
byC32load – Oct 1, 2016
I love this app! I think the study mode is outstanding. The explanations are very easy to understand and I love the the information stating which questions are outdated. Also, the tips on how to get a correct answer are very helpful. I use the study guide once for the explanations and the quiz mode to really put the answer in my mind.The price is very inexpensive when I factor in the help this is giving me to prepare for my class soon. I couldn’t imagine not using this.

5 stars – “A unique and updated app” 
by1234storm – Oct 1, 2016
…The app is updated and edited frequently from what I could tell – including the questions, images, aircraft categories, audio clips, even some video clips, etc.. ..There are B-737 operating/performance questions, which the app explains really well. Regarding other info, I see the new, smaller aircraft questions in my app, and have spoken to colleagues who all passed their ADX test after using the app. All I know is that this app sped up the study time needed to easily pass the ADX for me. Sheffield will also send you any detailed supplement files that might be a space hog on an app, if you request it. They even gave me free access to their web site resources for studying. I just asked for it. That alone would cost more than the app itself, so this app is MORE than worth it.

5 stars – “Very helpful!” 
byDL19921 – Sep 17, 2016
I used this app to prepare for the ADX test and passed with above an 80. The app is easy to use and very helpful.

5 stars – “Great App” 
byMarcusMartinez – Sep 17, 2016
Great app from a great organization!! Put on your phone and study anywhere conveniently and discreetly. I studied before meetings, waiting on movies to start, at games during timeouts, etc. Well worth the cost for the content and convenience.

5 stars
bymitchellman – Nov 29, 2015
This app is exactly what it says it is. I passed the ADX with a 92 using nothing but this app. Only once in a month of use did I ever have an issue with the app and I emailed them and it was fixed within hours. Ended up taking up the dispatcher course from Sheffield as well and less than 6 months after downloading this app I had my dispatch license. Great app and great program

From the Poland iTunes store:

5 stars – “Easy decision” 
byTcspilot – Jan 9, 2015
While some of the other reviews here mentioned the cost of this app as a consideration, I’ll start by saying disregard that if you’re weighing several options to prepare for the ADX exam. Having taken more FAA written exams over a career in aviation than I care to recount…this app is by far the most user friendly, comprehensive and even entertaining program to prepare you for not only the exam, but also for the course work that would naturally follow its successful completion. I’m several weeks into using the app, admittedly far more sporadically than I should be, so my review here is based on how well I feel I’m making progress toward the ultimate goal. And so far…I feel 100% positive. I’ll leave a second review once I pass the exam itself (because having a few weeks with the app I feel certain I’ll not only pass but ace the exam!) As for the what’s actually functionally good about it…I’ll cede to the other reviews here as they nailed it precisely. Structure, organization and ease of operation are all there. I guess the point of leaving a review is to offer a little guidance on whether or not your money is well spent on whatever app one is considering, I’ve relied on reviews often myself for that reason. So let me make it an easy decision, this is the first review I’ve ever written because I feel so strongly that your money will be well invested in the Sheffield ADX Test Prep app.


5 stars – “This is a good app” 
byHiMyNameIsDan – Nov 2, 2014
I recommend this app for ADX study. I used it as my primary source for practice questions and found it very helpful- especially study mode and the explanations for almost every answer. It gives you immediate feedback and you can memorize a lot through word association. If I had to do it again I’d buy this app sooner (the price scared me off initially) because I got a ton of use out of it. It’s really easy to practice an entire section whenever you have a few spare minutes- that’s what sets it apart from other study methods. In short, get this app, don’t worry about buying books or anything else. Put the time in and you’ll pass the ADX easily.

4 stars – “Great Help”
byR Foley – Jun 7, 2014
This app is well worth the money. I have been using it for quite a few weeks now. Easy to use and get around. Each exam subject area is broken down for easy learning (or memorizing). I will be taking the ADX soon and hope this app and my studying paid off!

5 stars – “Brilliant App” 
byMattack44 – May 10, 2014
This app is a must for anyone serious about taking and passing the FAA Aircraft Dispatcher Exam! Don’t let the price scare you, this app is more than worth it. The three modes of study are all immensely helpful, especially the Study mode. The Study mode allows you to view real exam questions and will give you additional content where needed through videos and other media. It will also not only show you the correct answer but explains why an answer is correct / not correct. On top of that, the app lets you know when any questions are written poorly by the FAA or are outdated in “real world” flight dispatching, and will give you tips on how to find the right answer for these trouble questions. The app works great on either iPad or iPhone. The only improvement I’d suggest is allowing you to save your spot in the Study mode. This would be helpful on large subject areas like FAR Part 121. In conclusion, this app is all you need to pass the exam. You’d pay much more trying to piece together everything separately (Gleim manuals, weather books, FAA regulations, etc. )

From the Azerbaijan iTunes store:

5 stars – “Best iOS app of ADX” 
bymaster90011 – Mar 4, 2014
Very useful solution for ADX test preparation. Thanks to developers

From the U.S. iTunes store:

5 stars – “Great App” 
By Brandoluo-Version 1.1-September 30, 2013
“The only thing I used to study for the ADX is this app. And I passed with flying colors, has a great mode where it randomizes all the questions for a feel of how the real exam is like.”

5 stars – “Passed the ADX!” 
By MGgirl17-Version 1.0-Feb 15, 2013
“I used Sheffield’s app as my main source of studying for the ADX. I like the different mode options available between quiz, study, test and the practice exams. Study mode was great for getting an explanation about the question. That helped me in remembering the correct answer. This app made it convenient to be able to study wherever I was or if I had a few minutes to waste I could use it studying. A few words of advice, give yourself plenty of time to prepare for the test and go to Sheffield for your flight dispatcher training, you won’t be sorry! Best school around!”

5 stars – “ADX”
By CALMIAATO-Version 1.0-Dec 19, 2012
“simple interface, only 3 mb, but provides text, highlighted images, audio, and video explanations. Variety of quizzes, tests, and study sessions that are fully customizable, and the 80-question exam generator with great feedback. Also, leads to a lot of web-based extras and free resources.”

Jose Gonzalez
Miami, Florida

From the Switzerland iTunes store:

5 stars – “The most perfect FAA Test preparation ever!” 
27 Nov 2012 12:14:41


“I have never seen such a sophisticated and easy to use learning and training method like the app from Sheffield School of Aeronautics in Fort Lauderdale FL. It contains all questions related to the ADX Knowledge test by the FAA.

The questions are corrected where necessary and there is an explanation for each answer. You will also have access to the protected scripts from Sheffield School of Aeronautics. I doubt anybody has written a 45-page pdf file with zoomed images to explain one flight log completely. In addition the support from the school is just great! I can absolutely recommend this high standard product! An app for real professionals or those who want to become one – great job!

Ralph Peter
(Swiss Aviation Training – Switzerland)

December 3, 2012
Facebook posting referring to previous review

“I agree with him!”

Anton Schall
(Sheffield ADX App user – Germany)

25 Apr 2013 21:56:03 -0400

“Thanks for all the information!  It has helped me refocus on studying and now I’m starting to get into the 90’s on the simulated exams.  I plan on taking it next week.  I have also recommended your app to a few of my friends looking at getting into DX as well as it’s a great tool, especially on the go.”


May 2, 2013

“…I really like the convenience factor. I study during my downtime at work and it’s pretty easy to get a practice exam in each day since you don’t have to flip through a booklet to get to each diagram. Especially on the aircraft performance questions. So I can typically get through one in 45 min, not including when I have to stop and do work. Before I started using the app, I was getting 60-65% on practice exams. Now I’m up to 90-95%…”


…a few days later…

“I passed! There were only a handful of questions that I had never seen before. 90% of my studying was via the app, …. I can say the Sheffield App sped up the process as in just two weeks I went from barely passing the practice exams, to passing all of them well above 70%.”


Germany iTunes review
ADX PREP *****
by Easybandit007-Version 1.0-Dec 4, 2012

“Really good app, the video and picture explanations are great to understand, thanks Eric!”

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    “These men represented the highest caliber of professionalism and integrity. The education I received from these gentleman has afforded me to be gainfully employed while having the opportunity to use the education received, all over this country, and more than a few others.” WG sidebar wg
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