Pilot Calcs vs GroundRollCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pilot Calcs
This app provides over 130 aviation-specific calculations and unit conversions for pilots. It aids in trip planning, in-flight adjustments, and maintenance with detailed descriptions, equations, and graphics. Users can save calculations, add favorites, and share results via email.
- Over 130 aviation calculations
- Unit conversions
- Trip planning tools
- In-flight calculations
- Maintenance references
- Save and favorite calculations
- Email calculation results
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With over 130 calculations and unit conversions, Pilot Calcs gives you access to quickly and easily solve a variety of calculations from your iPhone or iPad. If you are a pilot you’ll want Pilot Calcs for trip planning, in flight calculations, and maintenance. Most E6B apps include 25 to 50 calculators and conversions. Pilot Calcs includes over 100 calculators and conversions plus include descriptions, equations and graphics. Not just calculators but the ability save and open saved calculations and add calculators to a favorites list. You can also email calculator inputs and results so you can easily share your calculations. Search functionality enables you to quickly find the calculator you want. Current Calculators include: Conversions * Airflow * Angle * Area * Air Pressure Conversion * Density * Electrical Current * Electrical Power * Electrical Voltage * Energy * Flow Rate * Fluid * Fuel Mileage * Length * Mechanical Power * Money * Speed * Temperature * Torque * Volume * Weight * Weight of Liquids Fuel * Aviation Fuel Density and Weight * Fuel Consumption * Fuel Economy * Fuel Required * Fuel Weight * Maximum Fuel Load * Maximum Flight Time * Tank Fill Time Miscellaneous * Amps from Volts and Watts * Chart Distance * Distance to Horizon * Obstacle Height * Volts from Amps and Watts * Watts from Volts and Amps Money * Future Value Lump Sum * Loan Payments * Operating Costs * Operating Costs - Direct Costs * Operating Costs - Engine Reserve * Operating Costs - Prop Reserve * Private Pilot License Cost Performance * Climb - Best Rate vs. Best Angle * Climb Gradient * Descent Distance * Distance from Speed and Time * Glide Distance * Hydroplaning * Pivotal Altitude * Propeller Tip Speed * Rate of Climb from Climb Gradient * Rate of Climb to Clear Obstacle * Speed from Time and Distance * Time from Distance and Speed * True Airspeed * True Airspeed Via GPS * Turn - Bank Angle * Turn - Rate of Turn * Turn - Turn Radius * Turn - Performance Trip Planning * Time Zone Converter - 12Hr Time * Time Zone Converter - 24 Hr Time * Trip Estimator * Trip Estimator - Fuel * Trip Estimator - Costs Weather * Cloud Base & Temperature * Freezing Level * Density Altitude from Air Pressure * Density Altitude from Pressure Alt * Dew Point * Frost Point * Heat Index * Lightning Distance * Mach One * Pressure Altitude * Relative Humidity * Standard Atmosphere * Wind Chill Weight & Balance * Adverse CG Check - Forward * Adverse CG Check - Aft * Arm * CG Alteration - Weight, Arm * CG Alteration - Weight, Moment * CG Change - Shifting Weights * CG Change - Distance to Shift * CG Change - Weight to Shift * CG Change - Total Weight from Shift * Finding CG - Scales & Moments * Finding CG - Nose Wheel - Forward * Finding CG - Nose Wheel - Aft * Finding CG - Tail Wheel - Forward * Finding CG - Tail Wheel - Aft * Finding CG - As % of MAC * Finding CG - From % of MAC * Moment * Permanent Ballast * Temporary Ballast * Weight & Balance - Arms/Moments * Weight & Balance - Loading Graph Wind & Ground Speed * Course, Ground Speed, and WCA * Heading, Ground Speed, and WCA * Runway Wind Components * Wind Speed & Direction More calculators coming soon in free updates! If there's a calculator you'd like to see added, visit our website and send us an email.
GroundRollCalc
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Key Features Ground Roll Estimation Calculates expected takeoff ground roll based on: - Aircraft performance data - Weight and loading - Wind conditions - Density altitude - Runway slope and surface - Runway Visualization Graphical runway display with: - Estimated ground roll marker - Safety margin indicators - Remaining runway awareness Live GPS Mode (Optional) - Track actual takeoff roll in real time - Compare real-world performance to predicted values - Detect deviations from expected performance Aircraft & Airport Management - Store multiple aircraft profiles - Manage airport and runway data - Customize inputs for accurate calculations Built for Real-World Flying - Designed for clarity and speed in the cockpit - Clean interface optimized for iPad use - Focused on practical, decision-support information Important: GroundRollCalc is a supplemental performance tool and is not a substitute for approved aircraft performance data, POH/AFM guidance, or pilot judgment. Always verify performance calculations and operate in accordance with safe aviation practices. Data Sources Airport and aeronautical data may include publicly available datasets such as FAA and openAIP sources. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: GroundRollCalc at Free against Pilot Calcs's $2.99. GroundRollCalc also leads on update cadence (every 5 days vs every 7 months). Pilot Calcs's advantage is in-app purchases (none vs 3) and iOS requirement (9.0 vs 18.5). 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
GroundRollCalc is free to download; Pilot Calcs costs $2.99 up front. GroundRollCalc sells 3 in-app purchases, starting at $0.99 per month. Pilot Calcs asks for nothing beyond the download.
Pilot Calcs ships an update every 7 months, GroundRollCalc every 5 days. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.
| Parameter | Pilot Calcs | GroundRollCalc |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (12 ratings) — better | — |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 7 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 10 MB | 185 MB |
| Age rating | 4+ | 4+ |
| Developer | Calculated Industries | Rob Honeycutt |
In-app purchases
Pilot Calcs
No in-app purchases
GroundRollCalc
- GroundRollCalc Pro Monthly$0.991 Month
- GroundRollCalc Pro Yearly$9.991 Year
- Unlock Live GPS$5.99
Questions
Is Pilot Calcs free?
Is GroundRollCalc free?
Do Pilot Calcs or GroundRollCalc have ads?
Which is updated more often, Pilot Calcs or GroundRollCalc?
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