Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To download the free app iNavCalc by Risk Logical Limited, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download


By Risk Logical Limited

This app is only available on the App Store for iOS devices.


This app assists pilots in their VFR pre-flight navigation planning:

* Create your route by simply typing the list of desired waypoints

* Single click to generate your Pilot's LOG (PLOG) comprising all your navigation calculations for your route. Your PLOG, MET (METARS, TAFs), NOTAMS, and NAVCOM FREQUENCIES reports are made available via a file download page. The URL for this page can be shared (via email, social media, etc.)

* PLOG features:
-- drift uses the current MET to determine winds aloft for each waypoint along the route
-- magnetic heading uses a numerical geomagnetic model to calculate the magnetic deviation
-- altimetry (transition levels, flight levels, etc) and performance (density altitudes, freezing altitude, etc) calculations along the route
-- solar angle calculations (azimuth and zenith) along the route
-- includes fuel consumption profile along the route (including consideration of fuel consumption for initial climb-out, and any en route changes in altitude)
-- includes range and endurance estimation for possible diversion

* Specify wide range of parameters for the PLOG calculations including altitude profile along the route, airspeed profile along the route, date and time of departure (including UTC offset for local time), waypoint at which the stopwatch is zeroed (e.g., to enable PLOG times to be computed relative to a specified starting waypoint which can be different from the departure airfield).

* Save parameters & preferences for convenience and later re-use (requires free registration)

* Creates ".gpx" ".fpl" format files for easy import into other software tools and devices

* View route in GoogleMaps, SkyVector, and FlyLogical's ReallySimpleMovingMap web app

What's New in Version 4.0.4

Minor bug fix -- correctly assigns email address when (optionally) logging-in (before, erroneously assigned a blank)


iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Navigation
  • Updated:
  • Version: 4.0.4
  • Size: 31.1 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

This application hasn’t received enough ratings to display a summary.