Comparison

DA42 TDI vs Flight Review Prep

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

Head to head
About

DA42 TDI

Features
Read full description

Gyronimo Performance Pad -Diamond DA42 TDI- (for Engine: TAE 125-01 Centurion 1.7, 99kW max takeoff power) The ultimate computer for Mass & Balance and Performance. Calculate and interpolate performance data using the actual values from the Diamond DA42 TDI Pilot's Operating Handbook (POH). Finish your complete fight planning in just a few seconds. Performance planning has never been easier and quicker. Results are updated immediately and displayed in high resolution graphics, enhanced for the iPad Retina screen. Change all important values using sliders. Experiment with the results and create "what if" scenarios in no time. Find your optimal cruise altitude, takeoff ground roll, landing distance, and climb rate. The Performance Pad Diamond DA42 TDI has seven main pages: 1. The Mass & Balance (or Weight & Balance) Page Calculates Center of Gravity, Moments, Takeoff and Zero Fuel Mass. Set person and baggage weights in seconds using the convenient sliders. Check if the CG is within limits using three graphical displays - Moment Envelope - CG envelope - Aircraft axis or see a complete load manifest that you can send to your email address to quickly prove that you have completed the Weight & Balance for you flight. - Send a Mass & Balance Summary to your email address. 2. The Takeoff Page Using the actual data from the Operating Handbook the Performance Pad calculates and displays Ground Roll and Landing Distance based on: - Aircraft Mass - Takeoff Elevation in MSL (Pressure Altitude and Density Altitude will be computed) - Outside Air Temperature (OAT) - Altimeter Setting - Runway Conditions (i.e. paved dry to long grass or snow) - Runway Slope - Wind Conditions Wind Components Computer - Use the Wind Components page to determine your headwind or tailwind component. Rotate the wind dial to set wind direction, set windspeed and the results will be transferred to your takeoff computations automatically! 3. The Climb page Calculates time, fuel and distance based on - Difference between Takeoff Elevation and intended Flight Level - Altimeter Setting - Outside Air Temperature (OAT) - Altimeter Setting - Headwind or Tailwind Component Also the Rate of Climb and Climb Speed will be displayed. 4. The Cruise Page Using the actual data from the Pilot's Operating Handbook you can determine the optimal cruise altitude based on - Trip Distance - Flight Level - Engine RPM - Temperature - Wind and Altimeter Setting and calculate Break Horse Power (% BHP), Fuel Flow and True Airspeed The Max Range and Range including Reserve will be displayed graphically. The Fuel Management allows to enter Reserve Time for Contingency, Alternate and Final Reserve. The Fuel Usage is displayed graphically. Fuel Efficiency is computed in Miles per Gallon and Liter per 100km to set set results in a perspective. 5. Landing Page Calculates Ground Roll and Landing Distance based on wind, elevation, altimeter setting etc. Like on the Takeoff Page you can use the Wind Components Computer to quickly determine head- or tailwind components 6. Load / Save. - Load and Save up to five Aircraft Settings and Scenarios. 7. Setup - Visit our video channel and watch tutorials and video manuals. For iPad 2, iPad 3 and newer (iOS8 or newer recommended) DISCLAIMER: The author disclaims any liability for any direct, indirect, incidental, or consequential losses or damages in connection with your access to or use of this software. The information contained in this software is for general information purposes only.

About

Flight Review Prep

This app helps pilots prepare for their FAA Flight Review by offering over 220 common questions with suggested answers across 10 aviation topics. Study sessions are presented in a flashcard style with graphical images when needed, allowing pilots to track their progress and build confidence for the ground component of their review.

Highlights
  • Over 220 common questions
  • Suggested answers provided
  • 10 study topics
  • Flashcard style learning
  • Graphical images for clarity
  • Progress tracking
Features
Read full description

Preparing for a Flight Review can be difficult because it requires a broad overview of the current general operating and flight rules as well as other topics at the discretion of the flight instructor. Flight Review Prep includes over 220 common questions with suggested answers. The pilot can select one of 10 topics for each study session. Questions are presented in flashcard style. Graphical images are provided when needed. When the pilot views the suggested answer, they can indicate if they answered satisfactorily or if they would like to review the question again. Learning all of the questions allows the pilot to be prepared and confident for the ground component of the FAA Flight Review. The topics included are aircraft engines & systems, aircraft performance, airport operations, airspace, avionics & navigation, emergencies, federal aviation regulations, flight instruments, principles of flight and VFR charts. The app is free with 2 of the 10 topics unlocked. The remaining topics can be purchased with a single In-App purchase.

Screenshots

Flight Review Prep4 screens

Verdict

The call

The clearest difference is price: Flight Review Prep at Free against DA42 TDI's $38.99. Flight Review Prep also leads on device support (3 vs 1). DA42 TDI's advantage is in-app purchases (none vs 1) and update cadence (every 4 months vs every 10 months). On ads 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

Flight Review Prep is free to download; DA42 TDI costs $38.99 up front. Flight Review Prep sells 1 one-off in-app purchase. DA42 TDI asks for nothing beyond the download.

UpkeepUpdate frequency

DA42 TDI ships an update every 4 months, Flight Review Prep every 10 months. The most recent releases landed on October 26, 2026 and November 2, 2026 respectively.

Scorecard5 real differences · 5 level
DA42 TDI versus Flight Review Prep: the parameters behind the verdict, then further details
ParameterDA42 TDIFlight Review Prep
Price$38.99Free — better
Rating—3.0 (1 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 4 months — betterEvery 10 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPadiPhone, iPad, iPod — better
Requires iOS9.1 — better12.4
Further details — not scored
Size41 MB20 MB
Age rating4+4+
DeveloperGyronimo, LLCFirst Solo Software, LLC

In-app purchases

None

DA42 TDI

No in-app purchases

1 purchases

Flight Review Prep

One-time1
  • All Topics$19.99

Questions

Is DA42 TDI free?
DA42 TDI costs $38.99, with no in-app purchases.
Is Flight Review Prep free?
Flight Review Prep is free to download, with in-app purchases available.
Do DA42 TDI or Flight Review Prep have ads?
Neither DA42 TDI nor Flight Review Prep shows ads.
Which is updated more often, DA42 TDI or Flight Review Prep?
DA42 TDI ships an update every 4 months, and Flight Review Prep every 10 months. Most recently, DA42 TDI was updated on October 26, 2026 and Flight Review Prep on November 2, 2026.

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