# Pilot Calcs vs GroundRollCalc

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.

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.

## The numbers

| Metric | Pilot Calcs | GroundRollCalc |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.0 (12 ratings)](https://appshunter.io/ios/app/pilot-calcs/id424010847/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 10 MB | 185 MB |
| Requires iOS | **9.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [Rob Honeycutt](https://appshunter.io/developer/1820512480) |

## What reviewers say

### Pilot Calcs

[App page](https://appshunter.io/ios/app/pilot-calcs/id424010847)

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.

**Highlights:** Over 130 aviation calculations, Unit conversions, Trip planning tools, In-flight calculations, Maintenance references, Save and favorite calculations, Email calculation results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### GroundRollCalc

[App page](https://appshunter.io/ios/app/groundrollcalc/id6747908402)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GroundRollCalc Pro Monthly | $0.99 | per month |
| GroundRollCalc Pro Yearly | $9.99 | per year |
| Unlock Live GPS | $5.99 | one-time |


## Frequently asked questions

### Is Pilot Calcs free?

Pilot Calcs costs $2.99, with no in-app purchases.

### Is GroundRollCalc free?

GroundRollCalc is free to download, with in-app purchases available.

### Do Pilot Calcs or GroundRollCalc have ads?

Neither Pilot Calcs nor GroundRollCalc shows ads.

### Which is updated more often, Pilot Calcs or GroundRollCalc?

Pilot Calcs ships an update every 7 months, and GroundRollCalc every 5 days. Most recently, Pilot Calcs was updated on October 15, 2026 and GroundRollCalc on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*