01 Step 01
Know exactly where you stand
Log your event scores for the Army Fitness Test, Marine PFT and CFT, Navy PRT, Air Force PT and more. Gruntz turns them into one readiness score and shows the event holding you back.
Military fitness app 
15 days free, then $4.99/month
Train like a soldier. Pass your PT test.
A daily program, a readiness score for your service’s fitness test, and a workout log built for hard days — all in one app.
412 Exercise videos
8 Fitness tests
7 Ranks to earn
15 Days free
15 days free, then $4.99/month Built by a former U.S. Marine
Mission ready in 3 steps
The three things that get people through test day: knowing the gap, showing up, and training right.
01 
02 Step 02
Follow a mission, not a mood
Structured 8-week programs put today’s workout in front of you the moment you open the app. Show up, do the work, keep the streak alive.
03 Step 03
Train every rep the right way
A custom video for all 412 movements, with the muscles worked, step-by-step form and the mistakes to avoid. Fewer injuries, more progress.
Start your 15 days free No commitment. Cancel anytime in your App Store settings.
Built for people who can’t fail the test
Whether you ship next month or test every six months, Gruntz keeps you on standard.
Recruits & candidates Ship ready
Build the base for basic training, OCS or selection and walk in already passing your test.
Service members Stay test ready
Keep your score up year round with a plan that targets your weakest event.
Tactical athletes Built for hard days
Police, fire and anyone who trains for a job where fitness is not optional.
Built by a Marine
Made by someone who’s been there.
Gruntz was built by a former U.S. Marine who knows what it takes to be ready on test day — and what it feels like when you are not. Every feature earned its place on real training days: no fluff, just the work that moves your score.
Gruntz is independent and is not affiliated with or endorsed by the U.S. military.Everything you need in one app
From today’s workout to test day, without five different apps.
Main features
Tap a feature to see it in the app
A structured program that tells you exactly what to do today.
Pick a program and Gruntz lines up every session for the next 8 weeks. Open the app, start the mission, done.
Feature 01Questions, answered
Which fitness tests does Gruntz support?
The Army Fitness Test (AFT), Marine Corps PFT and CFT, Navy PRT, Air Force and Space Force assessments, Coast Guard PFT prep, and a general tactical readiness test. Always confirm the current standards with your service.
Do I need gym equipment?
No. The library covers bodyweight, dumbbell, kettlebell, barbell, band and machine movements, and you can build workouts around whatever you have.
How much does it cost?
New users get 15 days of full access. After that, Gruntz Pro is $4.99/month, billed through the App Store. Cancel anytime in your App Store settings.
Does it work offline?
Yes. Workouts, exercise videos and your progress live on your device, so you can train in the field or a basement gym with no signal.
Is the app available in Spanish?
The app itself is in English today. This website is available in English and Spanish.
Is Gruntz affiliated with the military?
No. Gruntz is an independent training app and is not affiliated with or endorsed by the U.S. Department of Defense or any military branch. It was built by a former U.S. Marine.
Report for duty
Your mission starts today
Download Gruntz, pick your test and get today’s workout in under a minute.
- 15 days free
- Cancel anytime
- Works offline
Gruntz Pro is $4.99/month after the free period, billed through the App Store.