Mark Kahrl

Rated 3.46(24) — Mark Kahrl

A simple yet useful barometric altimeter that actually works. Meant only for devices that have a built in barometer or pressure sensor. Computes your altitude from barometric pressure using the standard atmosphere model. Can be easily calibrated with...

Rated 3.55(38) — Mark Kahrl

Learn how to count cards and play Blackjack the 'KO' way. Simulates head to head play against the dealer with a shuffled and cut deck with 1 to 12 decks. Shows the discard tray and tracks the count so you can check your card counting accuracy. Designed...

Rated 3.20(10) — Mark Kahrl

A completely new and updated version of the beloved 'Range Card' App .Now supports MGRS coordinates as well as Lat. / Lon.Range finder and range card. A tactical data system for your phone. An essential tool for the long range rifle shooter.Use Google...

Rated 4.39(18) — Mark Kahrl

Based in Bozeman, Montana, the Gallatin National Forest Avalanche Center (GNFAC) puts out daily avalanche advisories. Additionally, the GNFAC posts useful videos and photos to help the backcountry user understand the current snow stability. Other pages...

Rated 3.76(45) — Mark Kahrl

This version is for older devices with Android with Android 4.1 or earlier.For newer devices use 'Range Card Pro' Range Card Pro 'Range Card Pro' has many new and advanced features as well, check it out. Range finder and range card. Use Google Maps/Sat