Comparison

KEANS Alerts vs NAC

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

Head to head
About

KEANS Alerts

Features
Read full description

The KEANS Alert app is an emergency alert notification system for airports. Using this app, The Air Traffic Controller (ATC) can issue alerts to the ground staff teams and emergency teams based on the information they receive from the pilots. Whenever the Air Traffic Controller ATC raises an alert, the ground staff teams and emergency teams can see the important details of the flight and emergency/alert along with audio and its transcript on their user-friendly interface. With the help of this app, ground staff and emergency teams are quickly notified in the event of an emergency or alert, enabling them to be ready with all the supplies and tools before the flight lands. This app helps airports by reducing risk in the event of emergencies and/or alerts.

About

NAC

Read full description

Terms of Service: https://airportnac.com/terms-and-conditions/ EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ NAC-Dynamic Friction Decelerometer (NAC-DFD®) The NAC-DFD® is an electronic friction testing device designed for airport runways. This 3-axis mobile iOS™ application enables airport operators to "spot-check" contaminated surfaces during winter runway operations. Key Features: Accurate Measurements: Records vehicle braking values by measuring the "g" force or lock-wheel braking action during qualified tests. Automated Reporting: Automatically generates final reports segmented into runway thirds: "touchdown," "midfield," and "rollout." Comprehensive Data Recording: Captures all necessary data, including time, date, operator, and assigned user ID. Versatile Contaminant Selection: Allows operators to choose from 14 different contaminant types for reporting runway conditions during winter operations. Easy Data Export: Supports exporting results using the standard print function. Additional Information: The NAC-DFD® assists airport operators in assessing the effectiveness of friction-enhancing treatments by indicating trends in runway friction levels. It is approved by the Federal Aviation Administration, as listed in Advisory Circular 150/5200-30C, Appendix 3. Note: For continued testing, a subscription is required.

Screenshots

KEANS Alerts4 screens
NAC4 screens

Verdict

The call

The clearest difference is in-app purchases: KEANS Alerts at none against NAC's 1. NAC's advantage is update cadence (fortnightly vs every 3 months) and iOS requirement (13.0 vs 15.6). On price, 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

Both are free to download. NAC sells 1 in-app purchase, starting at $199.00 per year. KEANS Alerts asks for nothing beyond the download.

UpkeepUpdate frequency

KEANS Alerts ships an update every 3 months, NAC fortnightly. The most recent releases landed on September 5, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 3 level
KEANS Alerts versus NAC: the parameters behind the verdict, then further details
ParameterKEANS AlertsNAC
PriceFreeFree
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size20 MB3 MB
Age rating4+4+
DeveloperKOVA Corp.Neubert Aero Corp

In-app purchases

None

KEANS Alerts

No in-app purchases

1 purchases

NAC

Subscriptions1
  • U.S. Region$199.001 Year

Questions

Is KEANS Alerts free?
KEANS Alerts is free to download, with no in-app purchases.
Is NAC free?
NAC is free to download, with in-app purchases available.
Do KEANS Alerts or NAC have ads?
Neither KEANS Alerts nor NAC shows ads.
Which is updated more often, KEANS Alerts or NAC?
KEANS Alerts ships an update every 3 months, and NAC fortnightly. Most recently, KEANS Alerts was updated on September 5, 2026 and NAC on September 14, 2026.

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