Comparison

Props & Governors vs Boldmethod

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

Head to head
About

Props & Governors

Explore interactive diagrams and detailed explanations of single and multi-engine aircraft propeller and governor systems. Learn about manifold pressure, governor components like flyweights and pilot valves, and propeller parts such as counterweights and feathering pins.

Highlights
  • Interactive training diagrams
  • Complete systems presentation
  • Single and multi-engine aircraft coverage
  • Detailed text descriptions
  • Manifold pressure explanation
  • Propeller and governor component breakdown
Features
Read full description

Props & Governors offers an interactive and complete systems presentation on piston aircraft single-engine and multi-engine constant speed propellers and governors. The course is divided into illustrated and text descriptions of each system, accompanied by interactive training diagrams including a fully functioning Propeller/Governor system for both single and multi-engine aircraft. Topics covered include: Manifold Pressure and how it is affected Propeller governor components (Flyweights, Speeder Spring, Pilot Valve) Propeller components (Counterweights, Feather Spring, Feathering Pins)

About

Boldmethod

Enhance your aviation knowledge with extensive video training and online courses. Practice with quizzes and master essential piloting skills like takeoffs, landings, airspace navigation, and weather interpretation. Prepare for checkrides and improve your flying proficiency.

Highlights
  • Extensive video training library
  • Online aviation courses
  • Pilot knowledge quizzes
  • Master takeoffs and landings
  • National Airspace System training
  • Aviation weather interpretation
  • VFR charts and publications
Read full description

Want to improve your piloting skills? Then the Boldmethod app is for you. With over 50 hours of videos and online training courses, you'll walk away with the knowledge that makes you a better pilot. Access your Boldmethod training courses in one app, watch the latest training videos, and test your knowledge with quizzes. What's new? The Feed and Challenges tabs are the place to start learning or to brush up on your aviation knowledge. When you're ready to take the next step, sign up for courses to truly master your pilot knowledge. MASTERING TAKEOFFS AND LANDINGS Do you have a perfect landing every time? Neither do we. This video course helps you master your takeoffs and landings. Whether you're trying to stop floating past your landing point or trying to smooth out your touchdown, you'll learn how to fix any of your takeoff and landing problems with this simple-to-use online course. The course breaks down takeoffs and landings into sections: Normal Takeoffs Traffic Patterns Normal Landings Crosswind Takeoffs and Landings Short Field Takeoffs and Landings Soft Field Takeoffs and Landings Non-Standard Takeoffs and Landings Night Takeoffs and Landings NATIONAL AIRSPACE SYSTEM Our airspace course covers everything you need to know about the National Airspace System, including Class A-G airspace, Special Use Airspace, and Other Airspace. It's an excellent way to prepare for your private pilot checkride and keep your flying skills sharp. The course breaks down airspace into sections: Class A airspace Class B airspace Class C airspace Class D airspace Class E airspace Class G airspace Special use airspace Other airspace AVIATION WEATHER REPORTS AND FORECASTS Our weather course covers everything you need to know about aviation weather, including METARs, TAFs, Pilot Reports, Graphical Forecasts For Aviation, Winds Aloft Forecasts, AIRMETs, SIGMETs, and Convective SIGMETs. It's an excellent way to prepare for your private pilot checkride and keep your flying skills sharp. The course breaks down aviation weather into sections: METARs TAFs PIREPs Graphical Forecasts For Aviation Winds Aloft Forecasts AIRMETs, SIGMETs, and Convective SIGMETs VFR CHARTS AND PUBLICATIONS Our charts course covers everything you need to know about VFR charts and publications, including sectional charts, terminal area charts, the Digital Chart Supplement, and NOTAMs. The course breaks down publications into sections: Sectional Charts Terminal Area Charts Digital Chart Supplement NOTAMs MOUNTAIN WEATHER Do you want to feel more comfortable flying around the high country? Boldmethod's Mountain Weather course helps make that happen. You'll learn how to evaluate mountain weather during your planning and while you're in flight. You'll also learn how terrain generates updrafts, downdrafts, turbulence, and storms, and changes the direction of the wind throughout the day. The course breaks down weather into sections: Mountain Waves Strong Surface Winds Updrafts, Downdrafts, And Turbulence Convergence Zones Coastal Mountain Wind Systems The North American Monsoon Daily (Diurnal) Winds In Valleys Mountain Thunderstorms

Screenshots

Boldmethod4 screens

Verdict

The call

The clearest difference is price: Boldmethod at Free against Props & Governors's $5.99. Boldmethod also leads on ratings volume (983 vs 2) and update cadence (every 3 weeks vs every 3 months). Props & Governors's advantage is in-app purchases (none vs 9) and ads (none vs shown). On rating and review sentiment 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

Boldmethod is free to download; Props & Governors costs $5.99 up front. Boldmethod sells 9 one-off in-app purchases. Props & Governors asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Props & Governors against 4.9 for Boldmethod. That said, the two scores are not equally well evidenced: Boldmethod has 983 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 100% of Props & Governors's written reviews are positive against 97% of Boldmethod's.

UpkeepUpdate frequency

Props & Governors ships an update every 3 months, Boldmethod every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard8 real differences · 2 level
Props & Governors versus Boldmethod: the parameters behind the verdict, then further details
ParameterProps & GovernorsBoldmethod
Price$5.99Free — better
Rating5.0 (2 ratings) — better4.9 (983 ratings)
Positive reviews100.0% of reviews — better97.3% of reviews
Number of ratings2983 — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPadiPhone, iPad, iPod, Mac, Apple TV — better
Requires iOS7.0 — better15.6
Further details — not scored
Size4 MB26 MB
Age rating4+4+
DeveloperAircraft Training Aids, LLCBoldMethod, LLC

Customer experience

Props & Governors

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Boldmethod

All ratings823 ratings
Positive98.4%
Neutral0.7%
Negative0.9%
Written reviews73 reviews
Positive97.3%
Neutral2.7%
Negative0.0%

Bugs and requests

Props & Governors

Not enough reviews yet to summarise bugs or requests.

Boldmethod

Reported bugs

2 issues
  • Crashing or freezing issues
  • Compatibility problems with older devices

Requested features

2 requests
  • Provide explanations for incorrect answers in quizzes
  • Improve navigation and progress tracking through courses

In-app purchases

None

Props & Governors

No in-app purchases

9 purchases

Boldmethod

One-time9
  • Aviation Weather Products$19.99
  • National Airspace System$19.99
  • VFR Charts$19.99
Show 6 more
  • National Airspace System$24.99
  • Aviation Weather Products$24.99
  • VFR Charts and Publications$24.99
  • Mastering Takeoffs & Landings$139.99
  • Mountain Weather$299.99
  • Instrument Procedures$499.99

Questions

Is Props & Governors free?
Props & Governors costs $5.99, with no in-app purchases.
Is Boldmethod free?
Boldmethod is free to download, with in-app purchases available.
Which has better reviews, Props & Governors or Boldmethod?
Props & Governors is rated higher. Props & Governors averages 5.0 out of 5 from 2 ratings, while Boldmethod averages 4.9 from 983 ratings.
Do Props & Governors or Boldmethod have ads?
Boldmethod shows ads; Props & Governors does not.
Which is updated more often, Props & Governors or Boldmethod?
Props & Governors ships an update every 3 months, and Boldmethod every 3 weeks. Most recently, Props & Governors was updated on November 1, 2026 and Boldmethod on November 3, 2026.

Other comparisons