ACE vs GroundRollCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ACE
This application allows users to create and manage checklists for Garmin avionics. It specifically supports the ACE checklist file format, making it ideal for pilots using systems like the G3X Touch.
- Checklist editor
- ACE checklist file format support
- Garmin avionics integration
- G3X Touch compatibility
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A checklist editor for Garmin avionics that support the ACE checklist file format (such as the G3X Touch).
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 in-app purchases: ACE at none against GroundRollCalc's 3. On price, ads, device support 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
Both are free to download. GroundRollCalc sells 3 in-app purchases, starting at $0.99 per month. ACE asks for nothing beyond the download.
| Parameter | ACE | GroundRollCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | — | Every 5 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPad, Mac | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 4 MB | 185 MB |
| Age rating | 4+ | 4+ |
| Developer | Post River Software | Rob Honeycutt |
In-app purchases
ACE
No in-app purchases
GroundRollCalc
- GroundRollCalc Pro Monthly$0.991 Month
- GroundRollCalc Pro Yearly$9.991 Year
- Unlock Live GPS$5.99









