Tactical NAV: MGRS Navigation

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115 reviews
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About this app


Created during a combat deployment to Afghanistan in support of Operation Enduring Freedom (OEF), Tactical NAV was the first MGRS-focused navigation app available on all app stores.

Built from the ground up in the rugged mountains of eastern Afghanistan, Tactical NAV (also known as TACNAV-X) was developed by a U.S. Army Field Artillery officer with the vision of crafting a low-cost and highly accurate mobile navigation platform tailored for the U.S. military.

Tactical NAV’s journey began in the Pech River Valley and the Korengal Valley in Kunar Province, Afghanistan.

U.S. Army Capt. Jonathan J. Springer, a Field Artilleryman serving as a Fire Support Officer with the 101st Airborne Division (Air Assault), embarked on the development of this tactical navigation platform immediately following the memorial services for Spc. Blair D. Thompson and Spc. Jared C. Plunk, who were killed in action on June 25, 2010.

Despite initial rejections by the Department of Defense, Captain Springer remained steadfast in his mission to continue developing Tactical NAV — even to this day. His ultimate goals were (and still are) to make a positive difference for other soldiers and service members and to honor the men and women killed and wounded in battle.

He used his life savings to fund and develop TACNAV-X, all with the ultimate hope of saving military lives, and helping his fellow service members in accomplishing their missions at home and abroad.

Tactical NAV officially launched on the App Store and Google Play on February 14, 2011.


TACNAV-X’s performance accurately matches that of the AN/PSN-13 Defense Advanced GPS Receiver (DAGR).


Empower military service members with a highly accurate and powerful mobile navigation platform.


Assist and support our nation’s service members with their mobile navigational needs and enable them to operate and win in both training and combat environments.


Tactical NAV has successfully undergone evaluation against other software platforms and devices such as Nett Warrior, ATAK, and BFT. Its accuracy is within 1mm of these officially approved systems issued by the DoD.


Tactical NAV offers in-app purchases (IAPs) and subscriptions. Currently, tactical drawing mode is available as an in-app purchase, and offline mapping mode is also accessible to users as either a monthly or yearly subscription.

All revenue generated from these features contributes to further developmental coding and updates, and a portion of the proceeds are donated to charities that specifically benefit disabled veterans.


• A military-quality precision targeting platform
• Purpose-built for the individual Soldier
• Offline mapping capabilities (complete usage of the app with no emission of a cellular signal)
• WGS-84 standard (MGRS, UTM, BNG, and USNG coordinates)
• Tactical drawing mode (useful for mission planning, building overlays, targeting, etc.)
• Waypoint plotting functionality with military graphics (per FM 1-02.2)
• Compass “FastLock” function for capturing quick and precise azimuths
• Snap and save photographs onto the main map to increase situational awareness
• Location, waypoint, and photo-sharing capabilities (via email and text)
• One-button night mode function for low-light situations
• ‘Go to Grid’ feature for precision planning, drawing of overlays, and dropping waypoints
• Rigorously tested to ensure utmost accuracy and reliability
• Android native code built for austere and contested environments


The Department of Defense does not endorse Tactical NAV and TACNAV-X, nor should it be used in life-threatening or combat situations in place of a government issued device.


If you have any questions about the app, please contact Jonathan Springer directly at jon@tacnavx.com.
Updated on
Jun 11, 2024

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Ratings and reviews

110 reviews
R. Raider
May 5, 2024
Captain Springer is awesome and incredibly helpful when I had questions about Tactical NAV. He's created the best tactical app outside of ATAK, and that's really saying something. Looking forward to future updates, and happy to support someone who gives back to our disabled veterans. Also I wanted to add that that the drawing abilities and offline maps are a game changer for me. I can build all my overlays without a cellular connection, which is outstanding. Great app.
5 people found this review helpful
Did you find this helpful?
May 7, 2024
Hi Raider, I appreciate the updated review! Your support means a lot to me, and I'm honored to have your backing. Just so you know, I'm continuously working on updates to make TACNAV even better for you and all our users. And thanks for joining me in supporting our disabled veterans—it's a cause that is close to my heart. Take care, brother! - Jon
Art Buzzcraft
March 8, 2024
I use Tactical Nav for general recreational hiking, and prefer this app because of its UTM grid support. It's responsive and, combined with my bluetooth receiver, very accurate. My main gripes are: When I use the degrees option with the map measurement tool to project a waypoint, I have to stop and do mental math (if going westerly) to subtract from 360. Would like the degrees to directly follow a compass rose. Second, it would be nice if other maps could be used (open maps, mapforge). Thanks!
6 people found this review helpful
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March 17, 2024
Hi Art, I’m updating my response to thank you for identifying the bug with the measurement tool displaying degrees westerly, likely introduced with the landscape mode update. I’m fixing it right now. Your feedback is invaluable to me and my dev team, and I appreciate your patience and support. Take care, and I hope you have a great weekend! - Jon