Comparison

C172M vs iDIAMOND Checkride Prep

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

Head to head
About

C172M

This app calculates mass, balance, and performance data for the Cessna 172M aircraft using actual Pilot's Operating Handbook values. It helps pilots plan flights quickly by determining optimal cruise altitudes, takeoff and landing distances, climb data, and stall speeds.

Highlights
  • Mass & Balance calculations
  • Takeoff and Landing performance
  • Climb data calculation
  • Optimal cruise altitude determination
  • Stall speed calculation
  • Save and load aircraft settings
  • Email load manifest
Read full description

Gyronimo Performance Pad -Cessna 172M- The ultimate computer for Mass & Balance and Performance. Compatibility: requires iPad 2 or newer, or iPad Mini Retina Now with support for Standard and Long Range Tanks! Calculate and interpolate performance data using the actual values from the Cessna 172M 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 2/3 and iPad Mini. 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, climb data and stall speeds. The Performance Pad C172M has seven main pages: 1. The Mass & Balance (or Weight & Balance) Page Calculates Center of Gravity, Moments, Takeoff and Zero Fuel Mass as well as Percent MAC (% MAC). 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. 2. The Takeoff Page Using the actual data from the C172M 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 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 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. Stall Speed Page. Calculates The Stall Speed based on Bank Angle and Flap Settings. Stall Speed will be computed as KIAS and KCAS using the actual values from the Cessna POH. 7. Setup - Load and Save up to five Aircraft Settings and Scenarios. - Send a Mass & Balance Summary to your email address. - Visit our video channel and watch tutorials and video manuals. Mode Switch: The Performance Pad can be used in two Modes: "Individual Mode" All calculations can be done independently from each other. "Plan Mode" Calculated values will be forwarded to the next page and an additional "Flight Summary Page" is available. Choose this mode if you want to do a complete performance planning. 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

iDIAMOND Checkride Prep

Prepare for aviation checkrides with interactive flashcards, quizzes, and an AI assistant. Access worldwide weather, airport information, and a community forum for pilots. Includes a fun aviation-themed board game to reinforce learning.

Highlights
  • Aircraft system flashcards and quizzes
  • AI-powered aviation Q&A
  • Worldwide weather and airport data
  • Customizable flashcard maker
  • Aviation-themed board game
  • Community message board
Features
Read full description

iDIAMOND Aircraft Apps IMPORTANT NOTICE The information contained in this application is supplemental and does not replace the aircraft flight manual. Information may vary depending on your airline or company policies and procedures. WHAT KIND OF AIRCRAFT ARE AVAILABLE? Diamond DA-20, Diamond DA-40, Diamond DA-42 Features: Worldwide Weather Airport to Airport Distance Calculator Airport METAR and TAF Search Custom Aircraft Flashcard Maker Aircraft Conversion Calculator Continuous Running Zulu Time Clock Airline Interview Questions Clear for Takeoff Board Game AI Ask Me Anything Community Message Board Flashcards Quizzes Memory Items Limitations SPECIFIC APP INFORMATION: FLASHCARDS Choose any aircraft system from the drop-down menu and study technical questions about the airplane using easy-to-navigate Back and Next buttons. QUIZZES Choose any aircraft system from the drop-down menu and test your knowledge with multiple-choice quizzes. An optional timer and background cockpit noise are available to simulate real check ride conditions and enhance your learning experience. MEMORY ITEMS Study all aircraft memory items in the built-in PDF reader, which allows you to print, email, and customize your learning experience. LIMITATIONS Study all aircraft limitations in flashcard format, then test your knowledge with a comprehensive quiz at the end. CLEAR FOR TAKEOFF BOARD GAME Challenge your aviation knowledge with the Clear for Takeoff board game. Answer aircraft systems questions, earn points, and compete against other pilots in this aviation-themed trivia experience designed to reinforce learning in an engaging format. AI ASK ME ANYTHING Get instant answers to your aviation and aircraft systems questions using the built-in AI assistant. Whether you are preparing for an oral exam or brushing up on systems knowledge, Ask Me Anything gives you a knowledgeable resource available anytime, anywhere. COMMUNITY MESSAGE BOARD Connect with other Diamond aircraft pilots and aviation professionals on the Community Message Board. Share tips, ask questions, and stay engaged with a community of pilots who use these same aircraft every day. AIRPORTS WEATHER AND FLIGHT PLANNING Choose any airport in the world and view the most current weather and METAR/TAF information. Use the Airport Flight Planning feature to check distance between airports in nautical miles. With a Wi-Fi or cellular connection, your aircraft position will display on the map. CUSTOM AIRCRAFT FLASHCARD MAKER Create your own systems flashcards by naming a category and entering your own question and answer. Ideal for company-specific procedures or aircraft variations. AIRCRAFT CONVERSION CALCULATOR Fast and accurate conversions for commonly used aviation calculations including Foot to Meter, Nautical Mile to Statute Mile, Nautical Mile to Kilometer, Inch to Meter, Pound to Kilogram, Gallon (US) to Liter, Gallon (Imperial) to Liter, Fahrenheit to Celsius, Pressure inHG to hPA, Gallons to Pounds, and Knots to MPH. ZULU TIME CLOCK Located on the menu screen. No internet connection required. Displays accurate Zulu time anywhere in the world at all times. IN-APP PURCHASES TERMS AND CONDITIONS Step 1: Download iDIAMOND Aircraft Apps from the App Store. Free download. Step 2: After the app has downloaded to your device, tap Diamond Aircraft Apps on the Menu Screen and browse the available in-app purchases for your aircraft. Step 3: Tap the Buy button under the aircraft you wish to purchase. Your account will be charged a one-time price for the material and content. Price varies based on app content. Step 4: Once purchased, in-app purchases cannot be canceled. Step 5: Access to the material and content never expires. Step 6: Payment will be charged to your iTunes account at confirmation of purchase. For a complete description of in-app purchase contents, visit WWW.AIRCRAFTAPPS.COM

Screenshots

iDIAMOND Checkride Prep4 screens

Verdict

The call

The clearest difference is price: iDIAMOND Checkride Prep at Free against C172M's $13.99. iDIAMOND Checkride Prep also leads on rating (3.7 vs 3.0) and update cadence (every 6 weeks vs every 7 months). C172M's advantage is in-app purchases (none vs 5) and review sentiment (67% vs 50%). On ratings volume, ads and iOS requirement 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

iDIAMOND Checkride Prep is free to download; C172M costs $13.99 up front. iDIAMOND Checkride Prep sells 5 one-off in-app purchases. C172M asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

iDIAMOND Checkride Prep holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews complicate that: 67% of C172M's written reviews are positive against 50% of iDIAMOND Checkride Prep's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

C172M ships an update every 7 months, iDIAMOND Checkride Prep every 6 weeks. The most recent releases landed on July 28, 2026 and June 11, 2026 respectively.

Scorecard7 real differences · 3 level
C172M versus iDIAMOND Checkride Prep: the parameters behind the verdict, then further details
ParameterC172MiDIAMOND Checkride Prep
Price$13.99Free — better
Rating3.0 (2 ratings)3.7 (3 ratings) — better
Positive reviews66.7% of reviews — better50.0% of reviews
Number of ratings23 — better
Update frequencyEvery 7 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS14.013.0 — better
Further details — not scored
Size27 MB78 MB
Age rating4+4+
DeveloperGyronimo, LLCAircraft Apps LLC

Customer experience

C172M

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

iDIAMOND Checkride Prep

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

C172M

No in-app purchases

5 purchases

iDIAMOND Checkride Prep

One-time5
  • MindCoach: Personal Health$19.99
  • 20 FAA Handbooks & Manuals$19.99
  • Diamond DA-20 Checkride Prep$29.99
Show 2 more
  • Diamond DA-42 Checkride Prep$29.99
  • Diamond DA-40$29.99

Questions

Is C172M free?
C172M costs $13.99, with no in-app purchases.
Is iDIAMOND Checkride Prep free?
iDIAMOND Checkride Prep is free to download, with in-app purchases available.
Which has better reviews, C172M or iDIAMOND Checkride Prep?
iDIAMOND Checkride Prep is rated higher. C172M averages 3.0 out of 5 from 2 ratings, while iDIAMOND Checkride Prep averages 3.7 from 3 ratings.
Do C172M or iDIAMOND Checkride Prep have ads?
Neither C172M nor iDIAMOND Checkride Prep shows ads.
Which is updated more often, C172M or iDIAMOND Checkride Prep?
C172M ships an update every 7 months, and iDIAMOND Checkride Prep every 6 weeks. Most recently, C172M was updated on July 28, 2026 and iDIAMOND Checkride Prep on June 11, 2026.

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