Comparison

Piper Warrior II vs CheckPrep

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

Head to head
About

Piper Warrior II

This app calculates mass, balance, and performance data for the Piper PA-28-161 Warrior II aircraft. It helps pilots plan flights quickly by computing takeoff, climb, cruise, and landing distances, as well as stall speeds and center of gravity.

Highlights
  • Mass & Balance calculations
  • Takeoff and Landing performance
  • Climb performance data
  • Cruise altitude optimization
  • Stall speed computation
  • Save up to five aircraft settings
  • Email Mass & Balance summary
Features
Read full description

Gyronimo Performance Pad Piper PA 28-161 -Warrior II- The ultimate computer for Mass & Balance and Performance for all Warrior II models with 2440lbs max GW. ***** now with 0º and 25º Flaps takeoff computations ***** Calculate and interpolate performance data using the actual values from the Warrior II 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, iPad Retina 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 Warrior II 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). 2. The Takeoff Page Using the actual data from the C172G "Rocket" 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 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

CheckPrep

Prepare for your pilot checkride oral exams with this app. It's structured around the FAA Airman Certification Standards (ACS) and includes searchable regulations, adaptive quizzes, and real-world scenario trainers. Track your progress and know when you're ready.

Highlights
  • FAA ACS structured study
  • Searchable FAR, AIM, and FAA documents
  • Offline study and bookmarking
  • Adaptive flashcards and quizzes
  • METAR, TAF, and PIREP interpretation
  • ATC clearance trainers
  • Progress tracking (0-100%)
Features
Read full description

Purpose-built for pilots who refuse to leave their checkride to chance. CheckPrep is a checkride oral prep app for the Private, Instrument, Commercial and Commercial Multi Add-On practical tests, built around the FAA Airman Certification Standards (ACS), the exact framework your DPE uses to evaluate you. This is not written test prep. This is oral prep. STUDY THE WAY YOUR DPE TESTS YOU Every question, answer and reference is organized by ACS Area of Operation and Task, the same structure your examiner follows. Every card maps to an ACS task, so every minute of study maps to your oral exam. THE FAA LIBRARY, FREE FOR EVERY USER Full FAR, AIM, Advisory Circulars, the ACS documents themselves, FAA letters of interpretation, InFOs and the FAA handbooks: PHAK, AFH, Instrument Flying, Instrument Procedures, Aviation Weather, Risk Management, Weight & Balance, Chart Users' Guide and the AMT handbooks. Tap a citation on a study card to open the exact paragraph, page or ACS element. Bookmark passages, search by keyword, read offline after download. AIM paragraphs also open on the FAA website, so you never have to wonder whether it is current. KNOW WHEN YOU'RE READY Mastery is tracked from 0 to 100% for every ACS task. Flash cards and multiple-choice quizzes are built from the same cards. Switch on the Needs Review filter to limit a session to the cards you still miss and leave the mastered ones out. When every task reads 100%, you know where you stand before the examiner does. DECODE REAL-WORLD WEATHER METAR, TAF and PIREP decoding practice with live data from aviationweather.gov. Included free. TRAIN YOUR EAR Departure (CRAFT) and approach (P-TAC) clearance trainers read the clearance aloud. You give the readback by voice. Beta, included with the Instrument guide. BUILT FOR YOUR CERTIFICATE Start with the free Private Pilot Sample: four complete ACS tasks with flash cards, quizzes and tappable citations. The full Private, Instrument, Commercial and Commercial Multi Add-On guides are one-time purchases, no subscription. Aircraft-specific add-on guides for the Cessna 172SP, Cirrus SR20 G7, Cirrus SR22 G6 and Diamond DA42 NG, each cited to the aircraft's own POH, AFM and PIM. Six themes. Offline-first. Study history and bookmarks sync across your devices through iCloud. Lightweight. No ads. No account required. No tracking. Walk into the oral knowing you have worked every ACS task. That is what CheckPrep is for. CheckPrep is an independent study tool and is not affiliated with, endorsed by or sponsored by the FAA. All regulatory content comes from official FAA publications.

Screenshots

CheckPrep4 screens

Verdict

The call

The clearest difference is price: CheckPrep at Free against Piper Warrior II's $17.99. CheckPrep also leads on rating (5.0 vs 3.0) and update cadence (every 4 days vs every 7 months). Piper Warrior II's advantage is in-app purchases (none vs 8) and iOS requirement (18.6 vs 26.2). 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

CheckPrep is free to download; Piper Warrior II costs $17.99 up front. CheckPrep sells 8 one-off in-app purchases. Piper Warrior II asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CheckPrep holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

UpkeepUpdate frequency

Piper Warrior II ships an update every 7 months, CheckPrep every 4 days. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

Scorecard7 real differences · 3 level
Piper Warrior II versus CheckPrep: the parameters behind the verdict, then further details
ParameterPiper Warrior IICheckPrep
Price$17.99Free — better
Rating3.0 (1 ratings)5.0 (4 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings14 — better
Update frequencyEvery 7 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPadiPhone, iPad — better
Requires iOS18.6 — better26.2
Further details — not scored
Size36 MB14 MB
Age rating4+4+
DeveloperGyronimo, LLCRobert Rousey

Customer experience

Piper Warrior II

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

CheckPrep

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Piper Warrior II

No in-app purchases

8 purchases

CheckPrep

One-time8
  • Cessna 172SP Content$4.99
  • Cirrus SR20 G7+ Content$4.99
  • Diamond DA42 NG Content$4.99
Show 5 more
  • Cirrus SR22 G6 Content$4.99
  • Commercial Multi Add-On Package$19.99
  • Commercial Package$19.99
  • Instrument Package$19.99
  • Private Pilot Package$19.99

Questions

Is Piper Warrior II free?
Piper Warrior II costs $17.99, with no in-app purchases.
Is CheckPrep free?
CheckPrep is free to download, with in-app purchases available.
Which has better reviews, Piper Warrior II or CheckPrep?
CheckPrep is rated higher. Piper Warrior II averages 3.0 out of 5 from 1 ratings, while CheckPrep averages 5.0 from 4 ratings.
Do Piper Warrior II or CheckPrep have ads?
Neither Piper Warrior II nor CheckPrep shows ads.
Which is updated more often, Piper Warrior II or CheckPrep?
Piper Warrior II ships an update every 7 months, and CheckPrep every 4 days. Most recently, Piper Warrior II was updated on November 1, 2026 and CheckPrep on November 5, 2026.

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