Comparison

III vs Fasttrack ATPL

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

III

Calculate material properties for III-V compound semiconductors like AlGaInAsP. It determines compositions, lattice constant, strain, bandgap, and effective masses for InP or GaAs substrates.

Highlights
  • III-V compound semiconductor calculations
  • Material property determination
  • Composition calculation (x, y, z)
  • Lattice constant and strain analysis
  • Bandgap and effective mass calculation
  • Supports InP and GaAs substrates
Features
Read full description

Application to calculate the compositions and material properties of a III-V compound semiconductor. Either InP or GaAs is assumed for the substrate. Some of the compositions and material parameters of the AlGaInAsP compound semiconductor are specified to determine the remain unknown parameters. The following properties are shown as a result: compositions (x, y, z), lattice constant, strain, bandgap, relative energy positions of the conduction and valence bands, and effective masses of the electron and holes.

About

Fasttrack ATPL

Prepare for pilot theory exams with a comprehensive question bank covering EASA, Middle East, and Chinese ATPL syllabi. Includes specialized modules for specific airlines and aircraft typeratings.

Highlights
  • EASA ATPL theory exam preparation
  • Middle East (GCAA) and Chinese (CAAC) ATPL question banks
  • Aircraft typerating preparation (Boeing, Airbus, Embraer)
  • Airline-specific ATPL assessment questions (Wizz Air, Qatar Airways)
  • Detailed explanations for General Navigation questions
  • Refresher questionnaires for airlines
Features
Read full description

Starting with the basic preparation for the ATPL theory exam our app provides ready entries also with a vast database for the Middle East with its Air Law and Operational Procedures test (GCAA for Emirates, Etihad or flydubai), for the Chinese ATPL test (CAAC) and last but not least ATPL refresher questionnaires for Wizzair or Qatar Airways. Fasttrack ATPL - your typerating expert when it comes to Boeing (B737, B777), Airbus (A320, A330), Embraer 135/145 and Dash DHC-8. ------------------------------------------------------ Each of the following packages can be subscribed in-app: 1. EASA ATPL Package (former JAA) ATPL Fasttrack is an unique app which offers you an efficient way to prepare for your ATPL exam according to EASA (former JAA). The following subjects are available to be downloaded as combined packages. Moreover the subject General Navigation provides you with a detailed explanation of the solution for each question. - Air Law - Airframe/ Systems/ Powerplant - Instruments/ Electronics - Mass and Balance - Performance - Flight Planing and Monitoring - Human Performance and Limitations - Meteorology - General Navigation - Radio Navigation - Operational Procedures - Principles Flight - IFR Communications - VFR Communications (german) 2. Air Law and Operational Procedures Middle East (e.g. UAE GCAA) In addition to that we provide especially applicants from the Middle East Region with an up to date question bank for the subject “Air Law and Operational Procedures“, for example for the UAE GCAA exam. 3. CAAC Chinese ATPL (NEW) All in one English questionbank for your ultimate preparation for the Chinese CAAC ATPL exam. If you are planing to go for the Chinese ATPL license this app will be of great help to you! It covers all relevant chapters like Meteorology, Aerodynamics, Navigation, not to forget the tricky Civil Aviation Law, Public Air Transport, ICAO Convention and Annex and many more. An app which offers you an efficient and quick way to your success! 4. NEW: Type rating question banks FASTTRACK ATPL and Aviation Insider have forged an exciting new partnership aiming at bringing ATPL students the next step of from their training with type rating question banks. We provide question banks for Boeing (B737, B777), Airbus (A320, A330), Embraer 135/145 and Dash DHC-8. 5. NEW: Find here the best preparation for your WIZZ Air ATPL exam. Fasttrack ATPL question bank for WIZZ Air includes 500 carefully selected ATPL questions from all ATPL chapters as well as additional 30 WIZZ Air specific questions for an easy assessment. 6. NEW: Find here an exclusive selection of specific ATPL questions asked by Qatar Airways during the assessment. Be well prepared and excel your Qatar Airways assessment with our question bank. 7. NEW: Check out Fasttrack ATPL "The 500 Need to Know Assessment ATPL Questions" with an exclusive selection of the 500 most asked assessment ATPL questions of airlines. Be your best and get above average results. ------------------------------------------------------ Additionally the program provides you with the following substantial features: - Constantly updated question bank - Subtopic filters - Easy to use interface - Study and Exam Mode - Statistical Analysis - Function to mark and unmark questions - Officially used attachments With this application we hope that we can provide you with an opportunity to easily pass your exams as we did a couple of years ago. The general idea for this program arose when we were struggling with the provided outdated learning material ourselves. At that time we were desperately looking for a guidance to solve the questions in a comprehensible manner. Thus we see our project as a support for future generation of pilots. Consequently you are more than welcome to give us feedback any time.

Screenshots

III4 screens
Fasttrack ATPL4 screens

Verdict

The call

The clearest difference is review sentiment: III at 100% against Fasttrack ATPL's 33%. III also leads on rating (4.0 vs 3.0) and in-app purchases (none vs 10). Fasttrack ATPL's advantage is price (Free vs $2.99) and update cadence (every 2 months vs every 17 months). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Fasttrack ATPL is free to download; III costs $2.99 up front. Fasttrack ATPL sells 10 one-off in-app purchases. III asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

III holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 100% of III's written reviews are positive against 33% of Fasttrack ATPL's.

UpkeepUpdate frequency

III ships an update every 17 months, Fasttrack ATPL every 2 months. Both last shipped on November 6, 2026.

Scorecard8 real differences · 2 level
III versus Fasttrack ATPL: the parameters behind the verdict, then further details
ParameterIIIFasttrack ATPL
Price$2.99Free — better
Rating4.0 (1 ratings) — better3.0 (3 ratings)
Positive reviews100.0% of reviews — better33.3% of reviews
Number of ratings13 — better
Update frequencyEvery 17 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size10 MB31 MB
Age rating4+4+
DeveloperTakuya IshikawaLogikwerk GmbH

Customer experience

III

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Fasttrack ATPL

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

III

No in-app purchases

10 purchases

Fasttrack ATPL

One-time10
  • 15 Weeks of FULL ATPL Package$17.99
  • 9 Weeks Qatar Airways ATPL$22.99
  • 9 Weeks Wizz Air ATPL$22.99
Show 7 more
  • 500 Need to Know Assessment Q.$22.99
  • A320 Type Rating Question Bank$26.99
  • 12 Weeks of Chinese CAAC ATPL$35.99
  • 5 Weeks GCAA Subscription$44.99
  • 7 Weeks GCAA Subscription$54.99
  • 7 Weeks GCAA + 777 Type Rating$74.99
  • 9 Weeks GCAA Subscription$99.99

Questions

Is III free?
III costs $2.99, with no in-app purchases.
Is Fasttrack ATPL free?
Fasttrack ATPL is free to download, with in-app purchases available.
Which has better reviews, III or Fasttrack ATPL?
III is rated higher. III averages 4.0 out of 5 from 1 ratings, while Fasttrack ATPL averages 3.0 from 3 ratings.
Do III or Fasttrack ATPL have ads?
Neither III nor Fasttrack ATPL shows ads.
Which is updated more often, III or Fasttrack ATPL?
III ships an update every 17 months, and Fasttrack ATPL every 2 months. Most recently, III was updated on November 6, 2026 and Fasttrack ATPL on November 6, 2026.

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